[patch 5/5] fs: Use seqlock in struct dentry

From: Thomas Gleixner
Date: Thu Mar 15 2012 - 07:44:56 EST

Next message: Thomas Gleixner: "[patch 3/5] seqlock: Provide seq_spin_* functions"
Previous message: Thomas Gleixner: "[patch 1/5] seqlock: Remove unused functions"
In reply to: Thomas Gleixner: "Re: [patch 1/5] seqlock: Remove unused functions"
Next in thread: Thomas Gleixner: "[patch 3/5] seqlock: Provide seq_spin_* functions"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

Replace the open coded seqlock with a real seqlock. This reorders
dentry members slightly to keep the structure size unchanged.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>

---
arch/powerpc/platforms/cell/spufs/inode.c | 6
drivers/infiniband/hw/ipath/ipath_fs.c | 6
drivers/infiniband/hw/qib/qib_fs.c | 6
drivers/usb/core/inode.c | 12 -
fs/9p/vfs_dir.c | 4
fs/afs/dir.c | 4
fs/autofs4/autofs_i.h | 24 +-
fs/autofs4/expire.c | 48 ++---
fs/autofs4/root.c | 38 ++--
fs/btrfs/export.c | 4
fs/btrfs/inode.c | 4
fs/ceph/caps.c | 8
fs/ceph/debugfs.c | 8
fs/ceph/dir.c | 30 +--
fs/ceph/export.c | 4
fs/ceph/inode.c | 20 +-
fs/ceph/mds_client.c | 18 +-
fs/cifs/dir.c | 6
fs/coda/cache.c | 4
fs/configfs/configfs_internal.h | 4
fs/configfs/inode.c | 6
fs/dcache.c | 253 ++++++++++++++----------------
fs/dcookies.c | 8
fs/exportfs/expfs.c | 12 -
fs/fat/inode.c | 4
fs/fat/namei_vfat.c | 4
fs/fs-writeback.c | 4
fs/fuse/inode.c | 4
fs/gfs2/export.c | 4
fs/isofs/export.c | 4
fs/libfs.c | 36 ++--
fs/namei.c | 42 ++--
fs/namespace.c | 8
fs/ncpfs/dir.c | 6
fs/ncpfs/ncplib_kernel.h | 8
fs/nfs/dir.c | 6
fs/nfs/getroot.c | 12 -
fs/nfs/namespace.c | 16 -
fs/nfs/unlink.c | 20 +-
fs/nilfs2/namei.c | 4
fs/notify/fsnotify.c | 8
fs/notify/vfsmount_mark.c | 24 +-
fs/ocfs2/dcache.c | 6
fs/ocfs2/export.c | 4
fs/reiserfs/inode.c | 4
fs/udf/namei.c | 4
fs/xfs/xfs_export.c | 8
include/linux/dcache.h | 17 --
include/linux/fs.h | 4
include/linux/fsnotify_backend.h | 6
kernel/cgroup.c | 22 +-
net/sunrpc/rpc_pipe.c | 6
security/selinux/selinuxfs.c | 14 -
53 files changed, 421 insertions(+), 425 deletions(-)

Index: tip/arch/powerpc/platforms/cell/spufs/inode.c
===================================================================
--- tip.orig/arch/powerpc/platforms/cell/spufs/inode.c
+++ tip/arch/powerpc/platforms/cell/spufs/inode.c
@@ -164,18 +164,18 @@ static void spufs_prune_dir(struct dentr

mutex_lock(&dir->d_inode->i_mutex);
list_for_each_entry_safe(dentry, tmp, &dir->d_subdirs, d_u.d_child) {
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (!(d_unhashed(dentry)) && dentry->d_inode) {
dget_dlock(dentry);
__d_drop(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
simple_unlink(dir->d_inode, dentry);
/* XXX: what was dcache_lock protecting here? Other
* filesystems (IB, configfs) release dcache_lock
* before unlink */
dput(dentry);
} else {
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}
}
shrink_dcache_parent(dir);
Index: tip/drivers/infiniband/hw/ipath/ipath_fs.c
===================================================================
--- tip.orig/drivers/infiniband/hw/ipath/ipath_fs.c
+++ tip/drivers/infiniband/hw/ipath/ipath_fs.c
@@ -277,14 +277,14 @@ static int remove_file(struct dentry *pa
goto bail;
}

- spin_lock(&tmp->d_lock);
+ seq_spin_lock(&tmp->d_lock);
if (!(d_unhashed(tmp) && tmp->d_inode)) {
dget_dlock(tmp);
__d_drop(tmp);
- spin_unlock(&tmp->d_lock);
+ seq_spin_unlock(&tmp->d_lock);
simple_unlink(parent->d_inode, tmp);
} else
- spin_unlock(&tmp->d_lock);
+ seq_spin_unlock(&tmp->d_lock);

ret = 0;
bail:
Index: tip/drivers/infiniband/hw/qib/qib_fs.c
===================================================================
--- tip.orig/drivers/infiniband/hw/qib/qib_fs.c
+++ tip/drivers/infiniband/hw/qib/qib_fs.c
@@ -453,14 +453,14 @@ static int remove_file(struct dentry *pa
goto bail;
}

- spin_lock(&tmp->d_lock);
+ seq_spin_lock(&tmp->d_lock);
if (!(d_unhashed(tmp) && tmp->d_inode)) {
dget_dlock(tmp);
__d_drop(tmp);
- spin_unlock(&tmp->d_lock);
+ seq_spin_unlock(&tmp->d_lock);
simple_unlink(parent->d_inode, tmp);
} else {
- spin_unlock(&tmp->d_lock);
+ seq_spin_unlock(&tmp->d_lock);
}

ret = 0;
Index: tip/drivers/usb/core/inode.c
===================================================================
--- tip.orig/drivers/usb/core/inode.c
+++ tip/drivers/usb/core/inode.c
@@ -341,19 +341,19 @@ static int usbfs_empty (struct dentry *d
{
struct list_head *list;

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
list_for_each(list, &dentry->d_subdirs) {
struct dentry *de = list_entry(list, struct dentry, d_u.d_child);

- spin_lock_nested(&de->d_lock, DENTRY_D_LOCK_NESTED);
+ seq_spin_lock_nested(&de->d_lock, DENTRY_D_LOCK_NESTED);
if (usbfs_positive(de)) {
- spin_unlock(&de->d_lock);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&de->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
return 0;
}
- spin_unlock(&de->d_lock);
+ seq_spin_unlock(&de->d_lock);
}
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
return 1;
}

Index: tip/fs/9p/vfs_dir.c
===================================================================
--- tip.orig/fs/9p/vfs_dir.c
+++ tip/fs/9p/vfs_dir.c
@@ -107,7 +107,7 @@ static int v9fs_alloc_rdir_buf(struct fi
err = -ENOMEM;
goto exit;
}
- spin_lock(&filp->f_dentry->d_lock);
+ seq_spin_lock(&filp->f_dentry->d_lock);
if (!fid->rdir) {
rdir->buf = (uint8_t *)rdir + sizeof(struct p9_rdir);
mutex_init(&rdir->mutex);
@@ -115,7 +115,7 @@ static int v9fs_alloc_rdir_buf(struct fi
fid->rdir = (void *) rdir;
rdir = NULL;
}
- spin_unlock(&filp->f_dentry->d_lock);
+ seq_spin_unlock(&filp->f_dentry->d_lock);
kfree(rdir);
}
exit:
Index: tip/fs/afs/dir.c
===================================================================
--- tip.orig/fs/afs/dir.c
+++ tip/fs/afs/dir.c
@@ -705,9 +705,9 @@ out_skip:

/* the dirent, if it exists, now points to a different vnode */
not_found:
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
dentry->d_flags |= DCACHE_NFSFS_RENAMED;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);

out_bad:
if (dentry->d_inode) {
Index: tip/fs/autofs4/autofs_i.h
===================================================================
--- tip.orig/fs/autofs4/autofs_i.h
+++ tip/fs/autofs4/autofs_i.h
@@ -199,9 +199,9 @@ static inline void __managed_dentry_set_

static inline void managed_dentry_set_automount(struct dentry *dentry)
{
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
__managed_dentry_set_automount(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}

static inline void __managed_dentry_clear_automount(struct dentry *dentry)
@@ -211,9 +211,9 @@ static inline void __managed_dentry_clea

static inline void managed_dentry_clear_automount(struct dentry *dentry)
{
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
__managed_dentry_clear_automount(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}

static inline void __managed_dentry_set_transit(struct dentry *dentry)
@@ -223,9 +223,9 @@ static inline void __managed_dentry_set_

static inline void managed_dentry_set_transit(struct dentry *dentry)
{
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
__managed_dentry_set_transit(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}

static inline void __managed_dentry_clear_transit(struct dentry *dentry)
@@ -235,9 +235,9 @@ static inline void __managed_dentry_clea

static inline void managed_dentry_clear_transit(struct dentry *dentry)
{
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
__managed_dentry_clear_transit(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}

static inline void __managed_dentry_set_managed(struct dentry *dentry)
@@ -247,9 +247,9 @@ static inline void __managed_dentry_set_

static inline void managed_dentry_set_managed(struct dentry *dentry)
{
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
__managed_dentry_set_managed(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}

static inline void __managed_dentry_clear_managed(struct dentry *dentry)
@@ -259,9 +259,9 @@ static inline void __managed_dentry_clea

static inline void managed_dentry_clear_managed(struct dentry *dentry)
{
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
__managed_dentry_clear_managed(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}

/* Initializing function */
Index: tip/fs/autofs4/expire.c
===================================================================
--- tip.orig/fs/autofs4/expire.c
+++ tip/fs/autofs4/expire.c
@@ -99,7 +99,7 @@ static struct dentry *get_next_positive_
spin_lock(&sbi->lookup_lock);

if (prev == NULL) {
- spin_lock(&root->d_lock);
+ seq_spin_lock(&root->d_lock);
prev = dget_dlock(root);
next = prev->d_subdirs.next;
p = prev;
@@ -107,12 +107,12 @@ static struct dentry *get_next_positive_
}

p = prev;
- spin_lock(&p->d_lock);
+ seq_spin_lock(&p->d_lock);
again:
next = p->d_u.d_child.next;
start:
if (next == &root->d_subdirs) {
- spin_unlock(&p->d_lock);
+ seq_spin_unlock(&p->d_lock);
spin_unlock(&sbi->lookup_lock);
dput(prev);
return NULL;
@@ -120,17 +120,17 @@ start:

q = list_entry(next, struct dentry, d_u.d_child);

- spin_lock_nested(&q->d_lock, DENTRY_D_LOCK_NESTED);
+ seq_spin_lock_nested(&q->d_lock, DENTRY_D_LOCK_NESTED);
/* Negative dentry - try next */
if (!simple_positive(q)) {
- spin_unlock(&p->d_lock);
- lock_set_subclass(&q->d_lock.dep_map, 0, _RET_IP_);
+ seq_spin_unlock(&p->d_lock);
+ lock_set_subclass(&q->d_lock.lock.dep_map, 0, _RET_IP_);
p = q;
goto again;
}
dget_dlock(q);
- spin_unlock(&q->d_lock);
- spin_unlock(&p->d_lock);
+ seq_spin_unlock(&q->d_lock);
+ seq_spin_unlock(&p->d_lock);
spin_unlock(&sbi->lookup_lock);

dput(prev);
@@ -154,7 +154,7 @@ static struct dentry *get_next_positive_
spin_lock(&sbi->lookup_lock);
relock:
p = prev;
- spin_lock(&p->d_lock);
+ seq_spin_lock(&p->d_lock);
again:
next = p->d_subdirs.next;
if (next == &p->d_subdirs) {
@@ -162,19 +162,19 @@ again:
struct dentry *parent;

if (p == root) {
- spin_unlock(&p->d_lock);
+ seq_spin_unlock(&p->d_lock);
spin_unlock(&sbi->lookup_lock);
dput(prev);
return NULL;
}

parent = p->d_parent;
- if (!spin_trylock(&parent->d_lock)) {
- spin_unlock(&p->d_lock);
+ if (!seq_spin_trylock(&parent->d_lock)) {
+ seq_spin_unlock(&p->d_lock);
cpu_relax();
goto relock;
}
- spin_unlock(&p->d_lock);
+ seq_spin_unlock(&p->d_lock);
next = p->d_u.d_child.next;
p = parent;
if (next != &parent->d_subdirs)
@@ -183,17 +183,17 @@ again:
}
ret = list_entry(next, struct dentry, d_u.d_child);

- spin_lock_nested(&ret->d_lock, DENTRY_D_LOCK_NESTED);
+ seq_spin_lock_nested(&ret->d_lock, DENTRY_D_LOCK_NESTED);
/* Negative dentry - try next */
if (!simple_positive(ret)) {
- spin_unlock(&p->d_lock);
- lock_set_subclass(&ret->d_lock.dep_map, 0, _RET_IP_);
+ seq_spin_unlock(&p->d_lock);
+ lock_set_subclass(&ret->d_lock.lock.dep_map, 0, _RET_IP_);
p = ret;
goto again;
}
dget_dlock(ret);
- spin_unlock(&ret->d_lock);
- spin_unlock(&p->d_lock);
+ seq_spin_unlock(&ret->d_lock);
+ seq_spin_unlock(&p->d_lock);
spin_unlock(&sbi->lookup_lock);

dput(prev);
@@ -464,11 +464,11 @@ found:
init_completion(&ino->expire_complete);
spin_unlock(&sbi->fs_lock);
spin_lock(&sbi->lookup_lock);
- spin_lock(&expired->d_parent->d_lock);
- spin_lock_nested(&expired->d_lock, DENTRY_D_LOCK_NESTED);
+ seq_spin_lock(&expired->d_parent->d_lock);
+ seq_spin_lock_nested(&expired->d_lock, DENTRY_D_LOCK_NESTED);
list_move(&expired->d_parent->d_subdirs, &expired->d_u.d_child);
- spin_unlock(&expired->d_lock);
- spin_unlock(&expired->d_parent->d_lock);
+ seq_spin_unlock(&expired->d_lock);
+ seq_spin_unlock(&expired->d_parent->d_lock);
spin_unlock(&sbi->lookup_lock);
return expired;
}
@@ -558,7 +558,7 @@ int autofs4_do_expire_multi(struct super

spin_lock(&sbi->fs_lock);
ino->flags &= ~AUTOFS_INF_EXPIRING;
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (!ret) {
if ((IS_ROOT(dentry) ||
(autofs_type_indirect(sbi->type) &&
@@ -566,7 +566,7 @@ int autofs4_do_expire_multi(struct super
!(dentry->d_flags & DCACHE_NEED_AUTOMOUNT))
__managed_dentry_set_automount(dentry);
}
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
complete_all(&ino->expire_complete);
spin_unlock(&sbi->fs_lock);
dput(dentry);
Index: tip/fs/autofs4/root.c
===================================================================
--- tip.orig/fs/autofs4/root.c
+++ tip/fs/autofs4/root.c
@@ -124,13 +124,13 @@ static int autofs4_dir_open(struct inode
* it.
*/
spin_lock(&sbi->lookup_lock);
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (!d_mountpoint(dentry) && list_empty(&dentry->d_subdirs)) {
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
spin_unlock(&sbi->lookup_lock);
return -ENOENT;
}
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
spin_unlock(&sbi->lookup_lock);

out:
@@ -179,7 +179,7 @@ static struct dentry *autofs4_lookup_act
ino = list_entry(p, struct autofs_info, active);
active = ino->dentry;

- spin_lock(&active->d_lock);
+ seq_spin_lock(&active->d_lock);

/* Already gone? */
if (active->d_count == 0)
@@ -199,12 +199,12 @@ static struct dentry *autofs4_lookup_act

if (d_unhashed(active)) {
dget_dlock(active);
- spin_unlock(&active->d_lock);
+ seq_spin_unlock(&active->d_lock);
spin_unlock(&sbi->lookup_lock);
return active;
}
next:
- spin_unlock(&active->d_lock);
+ seq_spin_unlock(&active->d_lock);
}
spin_unlock(&sbi->lookup_lock);

@@ -231,7 +231,7 @@ static struct dentry *autofs4_lookup_exp
ino = list_entry(p, struct autofs_info, expiring);
expiring = ino->dentry;

- spin_lock(&expiring->d_lock);
+ seq_spin_lock(&expiring->d_lock);

/* Bad luck, we've already been dentry_iput */
if (!expiring->d_inode)
@@ -251,12 +251,12 @@ static struct dentry *autofs4_lookup_exp

if (d_unhashed(expiring)) {
dget_dlock(expiring);
- spin_unlock(&expiring->d_lock);
+ seq_spin_unlock(&expiring->d_lock);
spin_unlock(&sbi->lookup_lock);
return expiring;
}
next:
- spin_unlock(&expiring->d_lock);
+ seq_spin_unlock(&expiring->d_lock);
}
spin_unlock(&sbi->lookup_lock);

@@ -382,12 +382,12 @@ static struct vfsmount *autofs4_d_automo
if (have_submounts(dentry))
goto done;
} else {
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (!list_empty(&dentry->d_subdirs)) {
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
goto done;
}
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}
ino->flags |= AUTOFS_INF_PENDING;
spin_unlock(&sbi->fs_lock);
@@ -410,12 +410,12 @@ done:
* an actual mount so ->d_automount() won't be called during
* the follow.
*/
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if ((!d_mountpoint(dentry) &&
!list_empty(&dentry->d_subdirs)) ||
(dentry->d_inode && S_ISLNK(dentry->d_inode->i_mode)))
__managed_dentry_clear_automount(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}
spin_unlock(&sbi->fs_lock);

@@ -597,9 +597,9 @@ static int autofs4_dir_unlink(struct ino

spin_lock(&sbi->lookup_lock);
__autofs4_add_expiring(dentry);
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
__d_drop(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
spin_unlock(&sbi->lookup_lock);

return 0;
@@ -670,15 +670,15 @@ static int autofs4_dir_rmdir(struct inod
return -EACCES;

spin_lock(&sbi->lookup_lock);
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (!list_empty(&dentry->d_subdirs)) {
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
spin_unlock(&sbi->lookup_lock);
return -ENOTEMPTY;
}
__autofs4_add_expiring(dentry);
__d_drop(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
spin_unlock(&sbi->lookup_lock);

if (sbi->version < 5)
Index: tip/fs/btrfs/export.c
===================================================================
--- tip.orig/fs/btrfs/export.c
+++ tip/fs/btrfs/export.c
@@ -40,14 +40,14 @@ static int btrfs_encode_fh(struct dentry
struct inode *parent;
u64 parent_root_id;

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);

parent = dentry->d_parent->d_inode;
fid->parent_objectid = BTRFS_I(parent)->location.objectid;
fid->parent_gen = parent->i_generation;
parent_root_id = BTRFS_I(parent)->root->objectid;

- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);

if (parent_root_id != fid->root_objectid) {
fid->parent_root_objectid = parent_root_id;
Index: tip/fs/btrfs/inode.c
===================================================================
--- tip.orig/fs/btrfs/inode.c
+++ tip/fs/btrfs/inode.c
@@ -4014,9 +4014,9 @@ static struct dentry *btrfs_lookup(struc

ret = d_splice_alias(btrfs_lookup_dentry(dir, dentry), dentry);
if (unlikely(d_need_lookup(dentry))) {
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
dentry->d_flags &= ~DCACHE_NEED_LOOKUP;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}
return ret;
}
Index: tip/fs/ceph/caps.c
===================================================================
--- tip.orig/fs/ceph/caps.c
+++ tip/fs/ceph/caps.c
@@ -3066,14 +3066,14 @@ int ceph_encode_dentry_release(void **p,
* doesn't have to be perfect; the mds will revoke anything we don't
* release.
*/
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (di->lease_session && di->lease_session->s_mds == mds)
force = 1;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);

ret = ceph_encode_inode_release(p, dir, mds, drop, unless, force);

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (ret && di->lease_session && di->lease_session->s_mds == mds) {
dout("encode_dentry_release %p mds%d seq %d\n",
dentry, mds, (int)di->lease_seq);
@@ -3083,6 +3083,6 @@ int ceph_encode_dentry_release(void **p,
rel->dname_seq = cpu_to_le32(di->lease_seq);
__ceph_mdsc_drop_dentry_lease(dentry);
}
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
return ret;
}
Index: tip/fs/ceph/debugfs.c
===================================================================
--- tip.orig/fs/ceph/debugfs.c
+++ tip/fs/ceph/debugfs.c
@@ -82,13 +82,13 @@ static int mdsc_show(struct seq_file *s,
&pathbase, 0);
if (IS_ERR(path))
path = NULL;
- spin_lock(&req->r_dentry->d_lock);
+ seq_spin_lock(&req->r_dentry->d_lock);
seq_printf(s, " #%llx/%.*s (%s)",
ceph_ino(req->r_dentry->d_parent->d_inode),
req->r_dentry->d_name.len,
req->r_dentry->d_name.name,
path ? path : "");
- spin_unlock(&req->r_dentry->d_lock);
+ seq_spin_unlock(&req->r_dentry->d_lock);
kfree(path);
} else if (req->r_path1) {
seq_printf(s, " #%llx/%s", req->r_ino1.ino,
@@ -100,13 +100,13 @@ static int mdsc_show(struct seq_file *s,
&pathbase, 0);
if (IS_ERR(path))
path = NULL;
- spin_lock(&req->r_old_dentry->d_lock);
+ seq_spin_lock(&req->r_old_dentry->d_lock);
seq_printf(s, " #%llx/%.*s (%s)",
ceph_ino(req->r_old_dentry_dir),
req->r_old_dentry->d_name.len,
req->r_old_dentry->d_name.name,
path ? path : "");
- spin_unlock(&req->r_old_dentry->d_lock);
+ seq_spin_unlock(&req->r_old_dentry->d_lock);
kfree(path);
} else if (req->r_path2) {
if (req->r_ino2.ino)
Index: tip/fs/ceph/dir.c
===================================================================
--- tip.orig/fs/ceph/dir.c
+++ tip/fs/ceph/dir.c
@@ -44,7 +44,7 @@ int ceph_init_dentry(struct dentry *dent
if (!di)
return -ENOMEM; /* oh well */

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (dentry->d_fsdata) {
/* lost a race */
kmem_cache_free(ceph_dentry_cachep, di);
@@ -67,7 +67,7 @@ int ceph_init_dentry(struct dentry *dent
dentry->d_fsdata = di;
ceph_dentry_lru_add(dentry);
out_unlock:
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
return 0;
}

@@ -78,12 +78,12 @@ struct inode *ceph_get_dentry_parent_ino
if (!dentry)
return NULL;

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (dentry->d_parent) {
inode = dentry->d_parent->d_inode;
ihold(inode);
}
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
return inode;
}

@@ -130,7 +130,7 @@ static int __dcache_readdir(struct file
dout("__dcache_readdir %p at %llu (last %p)\n", dir, filp->f_pos,
last);

- spin_lock(&parent->d_lock);
+ seq_spin_lock(&parent->d_lock);

/* start at beginning? */
if (filp->f_pos == 2 || last == NULL ||
@@ -154,7 +154,7 @@ more:
fi->flags |= CEPH_F_ATEND;
goto out_unlock;
}
- spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
+ seq_spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
if (!d_unhashed(dentry) && dentry->d_inode &&
ceph_snap(dentry->d_inode) != CEPH_SNAPDIR &&
ceph_ino(dentry->d_inode) != CEPH_INO_CEPH &&
@@ -164,15 +164,15 @@ more:
dentry->d_name.len, dentry->d_name.name, di->offset,
filp->f_pos, d_unhashed(dentry) ? " unhashed" : "",
!dentry->d_inode ? " null" : "");
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
p = p->prev;
dentry = list_entry(p, struct dentry, d_u.d_child);
di = ceph_dentry(dentry);
}

dget_dlock(dentry);
- spin_unlock(&dentry->d_lock);
- spin_unlock(&parent->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&parent->d_lock);

dout(" %llu (%llu) dentry %p %.*s %p\n", di->offset, filp->f_pos,
dentry, dentry->d_name.len, dentry->d_name.name, dentry->d_inode);
@@ -205,12 +205,12 @@ more:
goto out;
}

- spin_lock(&parent->d_lock);
+ seq_spin_lock(&parent->d_lock);
p = p->prev; /* advance to next dentry */
goto more;

out_unlock:
- spin_unlock(&parent->d_lock);
+ seq_spin_unlock(&parent->d_lock);
out:
if (last)
dput(last);
@@ -950,10 +950,10 @@ static int ceph_rename(struct inode *old
*/
void ceph_invalidate_dentry_lease(struct dentry *dentry)
{
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
dentry->d_time = jiffies;
ceph_dentry(dentry)->lease_shared_gen = 0;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}

/*
@@ -971,7 +971,7 @@ static int dentry_lease_is_valid(struct
struct inode *dir = NULL;
u32 seq = 0;

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
di = ceph_dentry(dentry);
if (di->lease_session) {
s = di->lease_session;
@@ -995,7 +995,7 @@ static int dentry_lease_is_valid(struct
}
}
}
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);

if (session) {
ceph_mdsc_lease_send_msg(session, dir, dentry,
Index: tip/fs/ceph/export.c
===================================================================
--- tip.orig/fs/ceph/export.c
+++ tip/fs/ceph/export.c
@@ -55,7 +55,7 @@ static int ceph_encode_fh(struct dentry
if (ceph_snap(inode) != CEPH_NOSNAP)
return -EINVAL;

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
parent = dentry->d_parent;
if (*max_len >= connected_handle_length) {
dout("encode_fh %p connectable\n", dentry);
@@ -79,7 +79,7 @@ static int ceph_encode_fh(struct dentry
*max_len = handle_length;
type = 255;
}
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
return type;
}

Index: tip/fs/ceph/inode.c
===================================================================
--- tip.orig/fs/ceph/inode.c
+++ tip/fs/ceph/inode.c
@@ -808,7 +808,7 @@ static void update_dentry_lease(struct d
if (dentry->d_op != &ceph_dentry_ops)
return;

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
dout("update_dentry_lease %p duration %lu ms ttl %lu\n",
dentry, duration, ttl);

@@ -836,7 +836,7 @@ static void update_dentry_lease(struct d
di->lease_renew_from = 0;
dentry->d_time = ttl;
out_unlock:
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
return;
}

@@ -866,13 +866,13 @@ static void ceph_set_dentry_offset(struc
di->offset = ceph_inode(inode)->i_max_offset++;
spin_unlock(&ci->i_ceph_lock);

- spin_lock(&dir->d_lock);
- spin_lock_nested(&dn->d_lock, DENTRY_D_LOCK_NESTED);
+ seq_spin_lock(&dir->d_lock);
+ seq_spin_lock_nested(&dn->d_lock, DENTRY_D_LOCK_NESTED);
list_move(&dn->d_u.d_child, &dir->d_subdirs);
dout("set_dentry_offset %p %lld (%p %p)\n", dn, di->offset,
dn->d_u.d_child.prev, dn->d_u.d_child.next);
- spin_unlock(&dn->d_lock);
- spin_unlock(&dir->d_lock);
+ seq_spin_unlock(&dn->d_lock);
+ seq_spin_unlock(&dir->d_lock);
}

/*
@@ -1254,11 +1254,11 @@ retry_lookup:
goto retry_lookup;
} else {
/* reorder parent's d_subdirs */
- spin_lock(&parent->d_lock);
- spin_lock_nested(&dn->d_lock, DENTRY_D_LOCK_NESTED);
+ seq_spin_lock(&parent->d_lock);
+ seq_spin_lock_nested(&dn->d_lock, DENTRY_D_LOCK_NESTED);
list_move(&dn->d_u.d_child, &parent->d_subdirs);
- spin_unlock(&dn->d_lock);
- spin_unlock(&parent->d_lock);
+ seq_spin_unlock(&dn->d_lock);
+ seq_spin_unlock(&parent->d_lock);
}

di = dn->d_fsdata;
Index: tip/fs/ceph/mds_client.c
===================================================================
--- tip.orig/fs/ceph/mds_client.c
+++ tip/fs/ceph/mds_client.c
@@ -1492,25 +1492,25 @@ retry:
for (temp = dentry; !IS_ROOT(temp) && pos != 0; ) {
struct inode *inode;

- spin_lock(&temp->d_lock);
+ seq_spin_lock(&temp->d_lock);
inode = temp->d_inode;
if (inode && ceph_snap(inode) == CEPH_SNAPDIR) {
dout("build_path path+%d: %p SNAPDIR\n",
pos, temp);
} else if (stop_on_nosnap && inode &&
ceph_snap(inode) == CEPH_NOSNAP) {
- spin_unlock(&temp->d_lock);
+ seq_spin_unlock(&temp->d_lock);
break;
} else {
pos -= temp->d_name.len;
if (pos < 0) {
- spin_unlock(&temp->d_lock);
+ seq_spin_unlock(&temp->d_lock);
break;
}
strncpy(path + pos, temp->d_name.name,
temp->d_name.len);
}
- spin_unlock(&temp->d_lock);
+ seq_spin_unlock(&temp->d_lock);
if (pos)
path[--pos] = '/';
temp = temp->d_parent;
@@ -2772,7 +2772,7 @@ static void handle_lease(struct ceph_mds
if (!dentry)
goto release;

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
di = ceph_dentry(dentry);
switch (h->action) {
case CEPH_MDS_LEASE_REVOKE:
@@ -2800,7 +2800,7 @@ static void handle_lease(struct ceph_mds
}
break;
}
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
dput(dentry);

if (!release)
@@ -2873,7 +2873,7 @@ void ceph_mdsc_lease_release(struct ceph
BUG_ON(dentry == NULL);

/* is dentry lease valid? */
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
di = ceph_dentry(dentry);
if (!di || !di->lease_session ||
di->lease_session->s_mds < 0 ||
@@ -2882,7 +2882,7 @@ void ceph_mdsc_lease_release(struct ceph
dout("lease_release inode %p dentry %p -- "
"no lease\n",
inode, dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
return;
}

@@ -2890,7 +2890,7 @@ void ceph_mdsc_lease_release(struct ceph
session = ceph_get_mds_session(di->lease_session);
seq = di->lease_seq;
__ceph_mdsc_drop_dentry_lease(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);

dout("lease_release inode %p dentry %p to mds%d\n",
inode, dentry, session->s_mds);
Index: tip/fs/cifs/dir.c
===================================================================
--- tip.orig/fs/cifs/dir.c
+++ tip/fs/cifs/dir.c
@@ -83,10 +83,10 @@ cifs_bp_rename_retry:
full_path[namelen] = 0; /* trailing null */
rcu_read_lock();
for (temp = direntry; !IS_ROOT(temp);) {
- spin_lock(&temp->d_lock);
+ seq_spin_lock(&temp->d_lock);
namelen -= 1 + temp->d_name.len;
if (namelen < 0) {
- spin_unlock(&temp->d_lock);
+ seq_spin_unlock(&temp->d_lock);
break;
} else {
full_path[namelen] = dirsep;
@@ -94,7 +94,7 @@ cifs_bp_rename_retry:
temp->d_name.len);
cFYI(0, "name: %s", full_path + namelen);
}
- spin_unlock(&temp->d_lock);
+ seq_spin_unlock(&temp->d_lock);
temp = temp->d_parent;
if (temp == NULL) {
cERROR(1, "corrupt dentry");
Index: tip/fs/coda/cache.c
===================================================================
--- tip.orig/fs/coda/cache.c
+++ tip/fs/coda/cache.c
@@ -92,7 +92,7 @@ static void coda_flag_children(struct de
struct list_head *child;
struct dentry *de;

- spin_lock(&parent->d_lock);
+ seq_spin_lock(&parent->d_lock);
list_for_each(child, &parent->d_subdirs)
{
de = list_entry(child, struct dentry, d_u.d_child);
@@ -101,7 +101,7 @@ static void coda_flag_children(struct de
continue;
coda_flag_inode(de->d_inode, flag);
}
- spin_unlock(&parent->d_lock);
+ seq_spin_unlock(&parent->d_lock);
return;
}

Index: tip/fs/configfs/configfs_internal.h
===================================================================
--- tip.orig/fs/configfs/configfs_internal.h
+++ tip/fs/configfs/configfs_internal.h
@@ -121,7 +121,7 @@ static inline struct config_item *config
{
struct config_item * item = NULL;

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (!d_unhashed(dentry)) {
struct configfs_dirent * sd = dentry->d_fsdata;
if (sd->s_type & CONFIGFS_ITEM_LINK) {
@@ -130,7 +130,7 @@ static inline struct config_item *config
} else
item = config_item_get(sd->s_element);
}
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);

return item;
}
Index: tip/fs/configfs/inode.c
===================================================================
--- tip.orig/fs/configfs/inode.c
+++ tip/fs/configfs/inode.c
@@ -251,14 +251,14 @@ void configfs_drop_dentry(struct configf
struct dentry * dentry = sd->s_dentry;

if (dentry) {
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (!(d_unhashed(dentry) && dentry->d_inode)) {
dget_dlock(dentry);
__d_drop(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
simple_unlink(parent->d_inode, dentry);
} else
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}
}

Index: tip/fs/dcache.c
===================================================================
--- tip.orig/fs/dcache.c
+++ tip/fs/dcache.c
@@ -193,9 +193,9 @@ static void d_free(struct dentry *dentry
*/
static inline void dentry_rcuwalk_barrier(struct dentry *dentry)
{
- assert_spin_locked(&dentry->d_lock);
+ assert_seq_spin_locked(&dentry->d_lock);
/* Go through a barrier */
- write_seqcount_barrier(&dentry->d_seq);
+ write_seqlock_barrier(&dentry->d_lock);
}

/*
@@ -211,7 +211,7 @@ static void dentry_iput(struct dentry *
if (inode) {
dentry->d_inode = NULL;
list_del_init(&dentry->d_alias);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
spin_unlock(&inode->i_lock);
if (!inode->i_nlink)
fsnotify_inoderemove(inode);
@@ -220,7 +220,7 @@ static void dentry_iput(struct dentry *
else
iput(inode);
} else {
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}
}

@@ -236,7 +236,7 @@ static void dentry_unlink_inode(struct d
dentry->d_inode = NULL;
list_del_init(&dentry->d_alias);
dentry_rcuwalk_barrier(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
spin_unlock(&inode->i_lock);
if (!inode->i_nlink)
fsnotify_inoderemove(inode);
@@ -334,7 +334,7 @@ static struct dentry *d_kill(struct dent
*/
dentry->d_flags |= DCACHE_DISCONNECTED;
if (parent)
- spin_unlock(&parent->d_lock);
+ seq_spin_unlock(&parent->d_lock);
dentry_iput(dentry);
/*
* dentry_iput drops the locks, at which point nobody (except
@@ -391,9 +391,9 @@ EXPORT_SYMBOL(__d_drop);

void d_drop(struct dentry *dentry)
{
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
__d_drop(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}
EXPORT_SYMBOL(d_drop);

@@ -408,10 +408,10 @@ EXPORT_SYMBOL(d_drop);
*/
void d_clear_need_lookup(struct dentry *dentry)
{
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
__d_drop(dentry);
dentry->d_flags &= ~DCACHE_NEED_LOOKUP;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}
EXPORT_SYMBOL(d_clear_need_lookup);

@@ -430,7 +430,7 @@ static inline struct dentry *dentry_kill
inode = dentry->d_inode;
if (inode && !spin_trylock(&inode->i_lock)) {
relock:
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
cpu_relax();
return dentry; /* try again with same dentry */
}
@@ -438,7 +438,7 @@ relock:
parent = NULL;
else
parent = dentry->d_parent;
- if (parent && !spin_trylock(&parent->d_lock)) {
+ if (parent && !seq_spin_trylock(&parent->d_lock)) {
if (inode)
spin_unlock(&inode->i_lock);
goto relock;
@@ -491,11 +491,11 @@ void dput(struct dentry *dentry)
repeat:
if (dentry->d_count == 1)
might_sleep();
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
BUG_ON(!dentry->d_count);
if (dentry->d_count > 1) {
dentry->d_count--;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
return;
}

@@ -518,7 +518,7 @@ repeat:
dentry_lru_add(dentry);

dentry->d_count--;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
return;

kill_it:
@@ -545,9 +545,9 @@ int d_invalidate(struct dentry * dentry)
/*
* If it's already been dropped, return OK.
*/
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (d_unhashed(dentry)) {
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
return 0;
}
/*
@@ -555,9 +555,9 @@ int d_invalidate(struct dentry * dentry)
* to get rid of unused child entries.
*/
if (!list_empty(&dentry->d_subdirs)) {
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
shrink_dcache_parent(dentry);
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
}

/*
@@ -574,13 +574,13 @@ int d_invalidate(struct dentry * dentry)
*/
if (dentry->d_count > 1 && dentry->d_inode) {
if (S_ISDIR(dentry->d_inode->i_mode) || d_mountpoint(dentry)) {
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
return -EBUSY;
}
}

__d_drop(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
return 0;
}
EXPORT_SYMBOL(d_invalidate);
@@ -593,9 +593,9 @@ static inline void __dget_dlock(struct d

static inline void __dget(struct dentry *dentry)
{
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
__dget_dlock(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}

struct dentry *dget_parent(struct dentry *dentry)
@@ -609,16 +609,16 @@ repeat:
*/
rcu_read_lock();
ret = dentry->d_parent;
- spin_lock(&ret->d_lock);
+ seq_spin_lock(&ret->d_lock);
if (unlikely(ret != dentry->d_parent)) {
- spin_unlock(&ret->d_lock);
+ seq_spin_unlock(&ret->d_lock);
rcu_read_unlock();
goto repeat;
}
rcu_read_unlock();
BUG_ON(!ret->d_count);
ret->d_count++;
- spin_unlock(&ret->d_lock);
+ seq_spin_unlock(&ret->d_lock);
return ret;
}
EXPORT_SYMBOL(dget_parent);
@@ -646,31 +646,31 @@ static struct dentry *__d_find_alias(str
again:
discon_alias = NULL;
list_for_each_entry(alias, &inode->i_dentry, d_alias) {
- spin_lock(&alias->d_lock);
+ seq_spin_lock(&alias->d_lock);
if (S_ISDIR(inode->i_mode) || !d_unhashed(alias)) {
if (IS_ROOT(alias) &&
(alias->d_flags & DCACHE_DISCONNECTED)) {
discon_alias = alias;
} else if (!want_discon) {
__dget_dlock(alias);
- spin_unlock(&alias->d_lock);
+ seq_spin_unlock(&alias->d_lock);
return alias;
}
}
- spin_unlock(&alias->d_lock);
+ seq_spin_unlock(&alias->d_lock);
}
if (discon_alias) {
alias = discon_alias;
- spin_lock(&alias->d_lock);
+ seq_spin_lock(&alias->d_lock);
if (S_ISDIR(inode->i_mode) || !d_unhashed(alias)) {
if (IS_ROOT(alias) &&
(alias->d_flags & DCACHE_DISCONNECTED)) {
__dget_dlock(alias);
- spin_unlock(&alias->d_lock);
+ seq_spin_unlock(&alias->d_lock);
return alias;
}
}
- spin_unlock(&alias->d_lock);
+ seq_spin_unlock(&alias->d_lock);
goto again;
}
return NULL;
@@ -699,16 +699,16 @@ void d_prune_aliases(struct inode *inode
restart:
spin_lock(&inode->i_lock);
list_for_each_entry(dentry, &inode->i_dentry, d_alias) {
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (!dentry->d_count) {
__dget_dlock(dentry);
__d_drop(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
spin_unlock(&inode->i_lock);
dput(dentry);
goto restart;
}
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}
spin_unlock(&inode->i_lock);
}
@@ -745,10 +745,10 @@ static void try_prune_one_dentry(struct
/* Prune ancestors. */
dentry = parent;
while (dentry) {
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (dentry->d_count > 1) {
dentry->d_count--;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
return;
}
dentry = dentry_kill(dentry, 1);
@@ -764,9 +764,9 @@ static void shrink_dentry_list(struct li
dentry = list_entry_rcu(list->prev, struct dentry, d_lru);
if (&dentry->d_lru == list)
break; /* empty */
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (dentry != list_entry(list->prev, struct dentry, d_lru)) {
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
continue;
}

@@ -777,7 +777,7 @@ static void shrink_dentry_list(struct li
*/
if (dentry->d_count) {
dentry_lru_del(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
continue;
}

@@ -815,7 +815,7 @@ relock:
struct dentry, d_lru);
BUG_ON(dentry->d_sb != sb);

- if (!spin_trylock(&dentry->d_lock)) {
+ if (!seq_spin_trylock(&dentry->d_lock)) {
spin_unlock(&dcache_lru_lock);
cpu_relax();
goto relock;
@@ -824,11 +824,11 @@ relock:
if (dentry->d_flags & DCACHE_REFERENCED) {
dentry->d_flags &= ~DCACHE_REFERENCED;
list_move(&dentry->d_lru, &referenced);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
} else {
list_move_tail(&dentry->d_lru, &tmp);
dentry->d_flags |= DCACHE_SHRINK_LIST;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
if (!--count)
break;
}
@@ -981,8 +981,8 @@ static struct dentry *try_to_ascend(stru
struct dentry *new = old->d_parent;

rcu_read_lock();
- spin_unlock(&old->d_lock);
- spin_lock(&new->d_lock);
+ seq_spin_unlock(&old->d_lock);
+ seq_spin_lock(&new->d_lock);

/*
* might go back up the wrong parent if we have had a rename
@@ -991,7 +991,7 @@ static struct dentry *try_to_ascend(stru
if (new != old->d_parent ||
(old->d_flags & DCACHE_DISCONNECTED) ||
(!locked && read_seqretry(&rename_lock, seq))) {
- spin_unlock(&new->d_lock);
+ seq_spin_unlock(&new->d_lock);
new = NULL;
}
rcu_read_unlock();
@@ -1025,7 +1025,7 @@ again:

if (d_mountpoint(parent))
goto positive;
- spin_lock(&this_parent->d_lock);
+ seq_spin_lock(&this_parent->d_lock);
repeat:
next = this_parent->d_subdirs.next;
resume:
@@ -1034,21 +1034,21 @@ resume:
struct dentry *dentry = list_entry(tmp, struct dentry, d_u.d_child);
next = tmp->next;

- spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
+ seq_spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
/* Have we found a mount point ? */
if (d_mountpoint(dentry)) {
- spin_unlock(&dentry->d_lock);
- spin_unlock(&this_parent->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&this_parent->d_lock);
goto positive;
}
if (!list_empty(&dentry->d_subdirs)) {
- spin_unlock(&this_parent->d_lock);
- spin_release(&dentry->d_lock.dep_map, 1, _RET_IP_);
+ seq_spin_unlock(&this_parent->d_lock);
+ spin_release(&dentry->d_lock.lock.dep_map, 1, _RET_IP_);
this_parent = dentry;
- spin_acquire(&this_parent->d_lock.dep_map, 0, 1, _RET_IP_);
+ spin_acquire(&this_parent->d_lock.lock.dep_map, 0, 1, _RET_IP_);
goto repeat;
}
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}
/*
* All done at this level ... ascend and resume the search.
@@ -1061,7 +1061,7 @@ resume:
next = child->d_u.d_child.next;
goto resume;
}
- spin_unlock(&this_parent->d_lock);
+ seq_spin_unlock(&this_parent->d_lock);
if (!locked && read_seqretry(&rename_lock, seq))
goto rename_retry;
if (locked)
@@ -1106,7 +1106,7 @@ static int select_parent(struct dentry *
seq = read_seqbegin(&rename_lock);
again:
this_parent = parent;
- spin_lock(&this_parent->d_lock);
+ seq_spin_lock(&this_parent->d_lock);
repeat:
next = this_parent->d_subdirs.next;
resume:
@@ -1115,7 +1115,7 @@ resume:
struct dentry *dentry = list_entry(tmp, struct dentry, d_u.d_child);
next = tmp->next;

- spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
+ seq_spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);

/*
* move only zero ref count dentries to the dispose list.
@@ -1138,7 +1138,7 @@ resume:
* the rest.
*/
if (found && need_resched()) {
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
goto out;
}

@@ -1146,14 +1146,14 @@ resume:
* Descend a level if the d_subdirs list is non-empty.
*/
if (!list_empty(&dentry->d_subdirs)) {
- spin_unlock(&this_parent->d_lock);
- spin_release(&dentry->d_lock.dep_map, 1, _RET_IP_);
+ seq_spin_unlock(&this_parent->d_lock);
+ spin_release(&dentry->d_lock.lock.dep_map, 1, _RET_IP_);
this_parent = dentry;
- spin_acquire(&this_parent->d_lock.dep_map, 0, 1, _RET_IP_);
+ spin_acquire(&this_parent->d_lock.lock.dep_map, 0, 1, _RET_IP_);
goto repeat;
}

- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}
/*
* All done at this level ... ascend and resume the search.
@@ -1167,7 +1167,7 @@ resume:
goto resume;
}
out:
- spin_unlock(&this_parent->d_lock);
+ seq_spin_unlock(&this_parent->d_lock);
if (!locked && read_seqretry(&rename_lock, seq))
goto rename_retry;
if (locked)
@@ -1235,8 +1235,7 @@ struct dentry *__d_alloc(struct super_bl

dentry->d_count = 1;
dentry->d_flags = 0;
- spin_lock_init(&dentry->d_lock);
- seqcount_init(&dentry->d_seq);
+ seqlock_init(&dentry->d_lock);
dentry->d_inode = NULL;
dentry->d_parent = dentry;
dentry->d_sb = sb;
@@ -1269,7 +1268,7 @@ struct dentry *d_alloc(struct dentry * p
if (!dentry)
return NULL;

- spin_lock(&parent->d_lock);
+ seq_spin_lock(&parent->d_lock);
/*
* don't need child lock because it is not subject
* to concurrency here
@@ -1277,7 +1276,7 @@ struct dentry *d_alloc(struct dentry * p
__dget_dlock(parent);
dentry->d_parent = parent;
list_add(&dentry->d_u.d_child, &parent->d_subdirs);
- spin_unlock(&parent->d_lock);
+ seq_spin_unlock(&parent->d_lock);

return dentry;
}
@@ -1329,7 +1328,7 @@ EXPORT_SYMBOL(d_set_d_op);

static void __d_instantiate(struct dentry *dentry, struct inode *inode)
{
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (inode) {
if (unlikely(IS_AUTOMOUNT(inode)))
dentry->d_flags |= DCACHE_NEED_AUTOMOUNT;
@@ -1337,7 +1336,7 @@ static void __d_instantiate(struct dentr
}
dentry->d_inode = inode;
dentry_rcuwalk_barrier(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
fsnotify_d_instantiate(dentry, inode);
}

@@ -1561,14 +1560,14 @@ struct dentry *d_obtain_alias(struct ino
}

/* attach a disconnected dentry */
- spin_lock(&tmp->d_lock);
+ seq_spin_lock(&tmp->d_lock);
tmp->d_inode = inode;
tmp->d_flags |= DCACHE_DISCONNECTED;
list_add(&tmp->d_alias, &inode->i_dentry);
hlist_bl_lock(&tmp->d_sb->s_anon);
hlist_bl_add_head(&tmp->d_hash, &tmp->d_sb->s_anon);
hlist_bl_unlock(&tmp->d_sb->s_anon);
- spin_unlock(&tmp->d_lock);
+ seq_spin_unlock(&tmp->d_lock);
spin_unlock(&inode->i_lock);
security_d_instantiate(tmp, inode);

@@ -1778,7 +1777,7 @@ struct dentry *__d_lookup_rcu(const stru
continue;

seqretry:
- seq = read_seqcount_begin(&dentry->d_seq);
+ seq = read_seqbegin(&dentry->d_lock);
if (dentry->d_parent != parent)
continue;
if (d_unhashed(dentry))
@@ -1793,7 +1792,7 @@ seqretry:
* edge of memory when walking. If we could load this
* atomically some other way, we could drop this check.
*/
- if (read_seqcount_retry(&dentry->d_seq, seq))
+ if (read_seqretry(&dentry->d_lock, seq))
goto seqretry;
if (unlikely(parent->d_flags & DCACHE_OP_COMPARE)) {
if (parent->d_op->d_compare(parent, *inode,
@@ -1897,7 +1896,7 @@ struct dentry *__d_lookup(struct dentry
if (dentry->d_name.hash != hash)
continue;

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (dentry->d_parent != parent)
goto next;
if (d_unhashed(dentry))
@@ -1921,10 +1920,10 @@ struct dentry *__d_lookup(struct dentry

dentry->d_count++;
found = dentry;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
break;
next:
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}
rcu_read_unlock();

@@ -1972,17 +1971,17 @@ int d_validate(struct dentry *dentry, st
{
struct dentry *child;

- spin_lock(&dparent->d_lock);
+ seq_spin_lock(&dparent->d_lock);
list_for_each_entry(child, &dparent->d_subdirs, d_u.d_child) {
if (dentry == child) {
- spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
+ spin_lock_nested(&dentry->d_lock.lock, DENTRY_D_LOCK_NESTED);
__dget_dlock(dentry);
- spin_unlock(&dentry->d_lock);
- spin_unlock(&dparent->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dparent->d_lock);
return 1;
}
}
- spin_unlock(&dparent->d_lock);
+ seq_spin_unlock(&dparent->d_lock);

return 0;
}
@@ -2017,12 +2016,12 @@ void d_delete(struct dentry * dentry)
* Are we the only user?
*/
again:
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
inode = dentry->d_inode;
isdir = S_ISDIR(inode->i_mode);
if (dentry->d_count == 1) {
if (inode && !spin_trylock(&inode->i_lock)) {
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
cpu_relax();
goto again;
}
@@ -2035,7 +2034,7 @@ again:
if (!d_unhashed(dentry))
__d_drop(dentry);

- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);

fsnotify_nameremove(dentry, isdir);
}
@@ -2064,9 +2063,9 @@ static void _d_rehash(struct dentry * en

void d_rehash(struct dentry * entry)
{
- spin_lock(&entry->d_lock);
+ seq_spin_lock(&entry->d_lock);
_d_rehash(entry);
- spin_unlock(&entry->d_lock);
+ seq_spin_unlock(&entry->d_lock);
}
EXPORT_SYMBOL(d_rehash);

@@ -2089,11 +2088,9 @@ void dentry_update_name_case(struct dent
BUG_ON(!mutex_is_locked(&dentry->d_parent->d_inode->i_mutex));
BUG_ON(dentry->d_name.len != name->len); /* d_lookup gives this */

- spin_lock(&dentry->d_lock);
- write_seqcount_begin(&dentry->d_seq);
+ write_seqlock(&dentry->d_lock);
memcpy((unsigned char *)dentry->d_name.name, name->name, name->len);
- write_seqcount_end(&dentry->d_seq);
- spin_unlock(&dentry->d_lock);
+ write_sequnlock(&dentry->d_lock);
}
EXPORT_SYMBOL(dentry_update_name_case);

@@ -2144,24 +2141,24 @@ static void dentry_lock_for_move(struct
* XXXX: do we really need to take target->d_lock?
*/
if (IS_ROOT(dentry) || dentry->d_parent == target->d_parent)
- spin_lock(&target->d_parent->d_lock);
+ seq_spin_lock(&target->d_parent->d_lock);
else {
if (d_ancestor(dentry->d_parent, target->d_parent)) {
- spin_lock(&dentry->d_parent->d_lock);
- spin_lock_nested(&target->d_parent->d_lock,
- DENTRY_D_LOCK_NESTED);
+ seq_spin_lock(&dentry->d_parent->d_lock);
+ seq_spin_lock_nested(&target->d_parent->d_lock,
+ DENTRY_D_LOCK_NESTED);
} else {
- spin_lock(&target->d_parent->d_lock);
- spin_lock_nested(&dentry->d_parent->d_lock,
- DENTRY_D_LOCK_NESTED);
+ seq_spin_lock(&target->d_parent->d_lock);
+ seq_spin_lock_nested(&dentry->d_parent->d_lock,
+ DENTRY_D_LOCK_NESTED);
}
}
if (target < dentry) {
- spin_lock_nested(&target->d_lock, 2);
- spin_lock_nested(&dentry->d_lock, 3);
+ seq_spin_lock_nested(&target->d_lock, 2);
+ seq_spin_lock_nested(&dentry->d_lock, 3);
} else {
- spin_lock_nested(&dentry->d_lock, 2);
- spin_lock_nested(&target->d_lock, 3);
+ seq_spin_lock_nested(&dentry->d_lock, 2);
+ seq_spin_lock_nested(&target->d_lock, 3);
}
}

@@ -2169,9 +2166,9 @@ static void dentry_unlock_parents_for_mo
struct dentry *target)
{
if (target->d_parent != dentry->d_parent)
- spin_unlock(&dentry->d_parent->d_lock);
+ seq_spin_unlock(&dentry->d_parent->d_lock);
if (target->d_parent != target)
- spin_unlock(&target->d_parent->d_lock);
+ seq_spin_unlock(&target->d_parent->d_lock);
}

/*
@@ -2205,8 +2202,8 @@ static void __d_move(struct dentry * den

dentry_lock_for_move(dentry, target);

- write_seqcount_begin(&dentry->d_seq);
- write_seqcount_begin(&target->d_seq);
+ write_seqlock_begin(&dentry->d_lock);
+ write_seqlock_begin(&target->d_lock);

/* __d_drop does write_seqcount_barrier, but they're OK to nest. */

@@ -2241,13 +2238,13 @@ static void __d_move(struct dentry * den

list_add(&dentry->d_u.d_child, &dentry->d_parent->d_subdirs);

- write_seqcount_end(&target->d_seq);
- write_seqcount_end(&dentry->d_seq);
+ write_seqlock_end(&target->d_lock);
+ write_seqlock_end(&dentry->d_lock);

dentry_unlock_parents_for_move(dentry, target);
- spin_unlock(&target->d_lock);
+ seq_spin_unlock(&target->d_lock);
fsnotify_d_move(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}

/*
@@ -2336,8 +2333,8 @@ static void __d_materialise_dentry(struc

dentry_lock_for_move(anon, dentry);

- write_seqcount_begin(&dentry->d_seq);
- write_seqcount_begin(&anon->d_seq);
+ write_seqlock_begin(&dentry->d_lock);
+ write_seqlock_begin(&anon->d_lock);

dparent = dentry->d_parent;
aparent = anon->d_parent;
@@ -2359,11 +2356,11 @@ static void __d_materialise_dentry(struc
else
INIT_LIST_HEAD(&anon->d_u.d_child);

- write_seqcount_end(&dentry->d_seq);
- write_seqcount_end(&anon->d_seq);
+ write_seqlock_end(&dentry->d_lock);
+ write_seqlock_end(&anon->d_lock);

dentry_unlock_parents_for_move(anon, dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);

/* anon->d_lock still locked, returns locked */
anon->d_flags &= ~DCACHE_DISCONNECTED;
@@ -2439,10 +2436,10 @@ struct dentry *d_materialise_unique(stru
else
BUG_ON(!d_unhashed(actual));

- spin_lock(&actual->d_lock);
+ seq_spin_lock(&actual->d_lock);
found:
_d_rehash(actual);
- spin_unlock(&actual->d_lock);
+ seq_spin_unlock(&actual->d_lock);
spin_unlock(&inode->i_lock);
out_nolock:
if (actual == dentry) {
@@ -2504,9 +2501,9 @@ static int prepend_path(const struct pat
}
parent = dentry->d_parent;
prefetch(parent);
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
error = prepend_name(buffer, buflen, &dentry->d_name);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
if (!error)
error = prepend(buffer, buflen, "/", 1);
if (error)
@@ -2731,9 +2728,9 @@ static char *__dentry_path(struct dentry
int error;

prefetch(parent);
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
error = prepend_name(&end, &buflen, &dentry->d_name);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
if (error != 0 || prepend(&end, &buflen, "/", 1) != 0)
goto Elong;

@@ -2898,7 +2895,7 @@ void d_genocide(struct dentry *root)
seq = read_seqbegin(&rename_lock);
again:
this_parent = root;
- spin_lock(&this_parent->d_lock);
+ seq_spin_lock(&this_parent->d_lock);
repeat:
next = this_parent->d_subdirs.next;
resume:
@@ -2907,23 +2904,23 @@ resume:
struct dentry *dentry = list_entry(tmp, struct dentry, d_u.d_child);
next = tmp->next;

- spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
+ seq_spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
if (d_unhashed(dentry) || !dentry->d_inode) {
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
continue;
}
if (!list_empty(&dentry->d_subdirs)) {
- spin_unlock(&this_parent->d_lock);
- spin_release(&dentry->d_lock.dep_map, 1, _RET_IP_);
+ seq_spin_unlock(&this_parent->d_lock);
+ spin_release(&dentry->d_lock.lock.dep_map, 1, _RET_IP_);
this_parent = dentry;
- spin_acquire(&this_parent->d_lock.dep_map, 0, 1, _RET_IP_);
+ spin_acquire(&this_parent->d_lock.lock.dep_map, 0, 1, _RET_IP_);
goto repeat;
}
if (!(dentry->d_flags & DCACHE_GENOCIDE)) {
dentry->d_flags |= DCACHE_GENOCIDE;
dentry->d_count--;
}
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}
if (this_parent != root) {
struct dentry *child = this_parent;
@@ -2937,7 +2934,7 @@ resume:
next = child->d_u.d_child.next;
goto resume;
}
- spin_unlock(&this_parent->d_lock);
+ seq_spin_unlock(&this_parent->d_lock);
if (!locked && read_seqretry(&rename_lock, seq))
goto rename_retry;
if (locked)
Index: tip/fs/dcookies.c
===================================================================
--- tip.orig/fs/dcookies.c
+++ tip/fs/dcookies.c
@@ -98,9 +98,9 @@ static struct dcookie_struct *alloc_dcoo
return NULL;

d = path->dentry;
- spin_lock(&d->d_lock);
+ seq_spin_lock(&d->d_lock);
d->d_flags |= DCACHE_COOKIE;
- spin_unlock(&d->d_lock);
+ seq_spin_unlock(&d->d_lock);

dcs->path = *path;
path_get(path);
@@ -267,9 +267,9 @@ static void free_dcookie(struct dcookie_
{
struct dentry *d = dcs->path.dentry;

- spin_lock(&d->d_lock);
+ seq_spin_lock(&d->d_lock);
d->d_flags &= ~DCACHE_COOKIE;
- spin_unlock(&d->d_lock);
+ seq_spin_unlock(&d->d_lock);

path_put(&dcs->path);
kmem_cache_free(dcookie_cache, dcs);
Index: tip/fs/exportfs/expfs.c
===================================================================
--- tip.orig/fs/exportfs/expfs.c
+++ tip/fs/exportfs/expfs.c
@@ -114,15 +114,15 @@ reconnect_path(struct vfsmount *mnt, str

if (!IS_ROOT(pd)) {
/* must have found a connected parent - great */
- spin_lock(&pd->d_lock);
+ seq_spin_lock(&pd->d_lock);
pd->d_flags &= ~DCACHE_DISCONNECTED;
- spin_unlock(&pd->d_lock);
+ seq_spin_unlock(&pd->d_lock);
noprogress = 0;
} else if (pd == mnt->mnt_sb->s_root) {
printk(KERN_ERR "export: Eeek filesystem root is not connected, impossible\n");
- spin_lock(&pd->d_lock);
+ seq_spin_lock(&pd->d_lock);
pd->d_flags &= ~DCACHE_DISCONNECTED;
- spin_unlock(&pd->d_lock);
+ seq_spin_unlock(&pd->d_lock);
noprogress = 0;
} else {
/*
@@ -335,11 +335,11 @@ static int export_encode_fh(struct dentr
if (connectable && !S_ISDIR(inode->i_mode)) {
struct inode *parent;

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
parent = dentry->d_parent->d_inode;
fid->i32.parent_ino = parent->i_ino;
fid->i32.parent_gen = parent->i_generation;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
len = 4;
type = FILEID_INO32_GEN_PARENT;
}
Index: tip/fs/fat/inode.c
===================================================================
--- tip.orig/fs/fat/inode.c
+++ tip/fs/fat/inode.c
@@ -771,9 +771,9 @@ fat_encode_fh(struct dentry *de, __u32 *
fh[1] = inode->i_generation;
fh[2] = ipos_h;
fh[3] = ipos_m | MSDOS_I(inode)->i_logstart;
- spin_lock(&de->d_lock);
+ seq_spin_lock(&de->d_lock);
fh[4] = ipos_l | MSDOS_I(de->d_parent->d_inode)->i_logstart;
- spin_unlock(&de->d_lock);
+ seq_spin_unlock(&de->d_lock);
return 3;
}

Index: tip/fs/fat/namei_vfat.c
===================================================================
--- tip.orig/fs/fat/namei_vfat.c
+++ tip/fs/fat/namei_vfat.c
@@ -34,10 +34,10 @@
static int vfat_revalidate_shortname(struct dentry *dentry)
{
int ret = 1;
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (dentry->d_time != dentry->d_parent->d_inode->i_version)
ret = 0;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
return ret;
}

Index: tip/fs/fs-writeback.c
===================================================================
--- tip.orig/fs/fs-writeback.c
+++ tip/fs/fs-writeback.c
@@ -1019,7 +1019,7 @@ static noinline void block_dump___mark_i

dentry = d_find_alias(inode);
if (dentry) {
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
name = (const char *) dentry->d_name.name;
}
printk(KERN_DEBUG
@@ -1027,7 +1027,7 @@ static noinline void block_dump___mark_i
current->comm, task_pid_nr(current), inode->i_ino,
name, inode->i_sb->s_id);
if (dentry) {
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
dput(dentry);
}
}
Index: tip/fs/fuse/inode.c
===================================================================
--- tip.orig/fs/fuse/inode.c
+++ tip/fs/fuse/inode.c
@@ -651,11 +651,11 @@ static int fuse_encode_fh(struct dentry
if (encode_parent) {
struct inode *parent;

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
parent = dentry->d_parent->d_inode;
nodeid = get_fuse_inode(parent)->nodeid;
generation = parent->i_generation;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);

fh[3] = (u32)(nodeid >> 32);
fh[4] = (u32)(nodeid & 0xffffffff);
Index: tip/fs/gfs2/export.c
===================================================================
--- tip.orig/fs/gfs2/export.c
+++ tip/fs/gfs2/export.c
@@ -53,11 +53,11 @@ static int gfs2_encode_fh(struct dentry
if (!connectable || inode == sb->s_root->d_inode)
return *len;

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
inode = dentry->d_parent->d_inode;
ip = GFS2_I(inode);
igrab(inode);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);

fh[4] = cpu_to_be32(ip->i_no_formal_ino >> 32);
fh[5] = cpu_to_be32(ip->i_no_formal_ino & 0xFFFFFFFF);
Index: tip/fs/isofs/export.c
===================================================================
--- tip.orig/fs/isofs/export.c
+++ tip/fs/isofs/export.c
@@ -139,13 +139,13 @@ isofs_export_encode_fh(struct dentry *de
if (connectable && !S_ISDIR(inode->i_mode)) {
struct inode *parent;
struct iso_inode_info *eparent;
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
parent = dentry->d_parent->d_inode;
eparent = ISOFS_I(parent);
fh32[3] = eparent->i_iget5_block;
fh16[3] = (__u16)eparent->i_iget5_offset; /* fh16 [sic] */
fh32[4] = parent->i_generation;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
len = 5;
type = 2;
}
Index: tip/fs/libfs.c
===================================================================
--- tip.orig/fs/libfs.c
+++ tip/fs/libfs.c
@@ -102,21 +102,21 @@ loff_t dcache_dir_lseek(struct file *fil
struct dentry *cursor = file->private_data;
loff_t n = file->f_pos - 2;

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
/* d_lock not required for cursor */
list_del(&cursor->d_u.d_child);
p = dentry->d_subdirs.next;
while (n && p != &dentry->d_subdirs) {
struct dentry *next;
next = list_entry(p, struct dentry, d_u.d_child);
- spin_lock_nested(&next->d_lock, DENTRY_D_LOCK_NESTED);
+ seq_spin_lock_nested(&next->d_lock, DENTRY_D_LOCK_NESTED);
if (simple_positive(next))
n--;
- spin_unlock(&next->d_lock);
+ seq_spin_unlock(&next->d_lock);
p = p->next;
}
list_add_tail(&cursor->d_u.d_child, p);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}
}
mutex_unlock(&dentry->d_inode->i_mutex);
@@ -159,35 +159,35 @@ int dcache_readdir(struct file * filp, v
i++;
/* fallthrough */
default:
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (filp->f_pos == 2)
list_move(q, &dentry->d_subdirs);

for (p=q->next; p != &dentry->d_subdirs; p=p->next) {
struct dentry *next;
next = list_entry(p, struct dentry, d_u.d_child);
- spin_lock_nested(&next->d_lock, DENTRY_D_LOCK_NESTED);
+ seq_spin_lock_nested(&next->d_lock, DENTRY_D_LOCK_NESTED);
if (!simple_positive(next)) {
- spin_unlock(&next->d_lock);
+ seq_spin_unlock(&next->d_lock);
continue;
}

- spin_unlock(&next->d_lock);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&next->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
if (filldir(dirent, next->d_name.name,
next->d_name.len, filp->f_pos,
next->d_inode->i_ino,
dt_type(next->d_inode)) < 0)
return 0;
- spin_lock(&dentry->d_lock);
- spin_lock_nested(&next->d_lock, DENTRY_D_LOCK_NESTED);
+ seq_spin_lock(&dentry->d_lock);
+ seq_spin_lock_nested(&next->d_lock, DENTRY_D_LOCK_NESTED);
/* next is still alive */
list_move(q, p);
- spin_unlock(&next->d_lock);
+ seq_spin_unlock(&next->d_lock);
p = q;
filp->f_pos++;
}
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}
return 0;
}
@@ -281,18 +281,18 @@ int simple_empty(struct dentry *dentry)
struct dentry *child;
int ret = 0;

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
list_for_each_entry(child, &dentry->d_subdirs, d_u.d_child) {
- spin_lock_nested(&child->d_lock, DENTRY_D_LOCK_NESTED);
+ seq_spin_lock_nested(&child->d_lock, DENTRY_D_LOCK_NESTED);
if (simple_positive(child)) {
- spin_unlock(&child->d_lock);
+ seq_spin_unlock(&child->d_lock);
goto out;
}
- spin_unlock(&child->d_lock);
+ seq_spin_unlock(&child->d_lock);
}
ret = 1;
out:
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
return ret;
}

Index: tip/fs/namei.c
===================================================================
--- tip.orig/fs/namei.c
+++ tip/fs/namei.c
@@ -432,7 +432,7 @@ static int unlazy_walk(struct nameidata
nd->root.dentry != fs->root.dentry)
goto err_root;
}
- spin_lock(&parent->d_lock);
+ seq_spin_lock(&parent->d_lock);
if (!dentry) {
if (!__d_rcu_to_refcount(parent, nd->seq))
goto err_parent;
@@ -440,7 +440,7 @@ static int unlazy_walk(struct nameidata
} else {
if (dentry->d_parent != parent)
goto err_parent;
- spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
+ seq_spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
if (!__d_rcu_to_refcount(dentry, nd->seq))
goto err_child;
/*
@@ -452,9 +452,9 @@ static int unlazy_walk(struct nameidata
BUG_ON(!IS_ROOT(dentry) && dentry->d_parent != parent);
BUG_ON(!parent->d_count);
parent->d_count++;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}
- spin_unlock(&parent->d_lock);
+ seq_spin_unlock(&parent->d_lock);
if (want_root) {
path_get(&nd->root);
seq_spin_unlock(&fs->lock);
@@ -467,9 +467,9 @@ static int unlazy_walk(struct nameidata
return 0;

err_child:
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
err_parent:
- spin_unlock(&parent->d_lock);
+ seq_spin_unlock(&parent->d_lock);
err_root:
if (want_root)
seq_spin_unlock(&fs->lock);
@@ -516,15 +516,15 @@ static int complete_walk(struct nameidat
nd->flags &= ~LOOKUP_RCU;
if (!(nd->flags & LOOKUP_ROOT))
nd->root.mnt = NULL;
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (unlikely(!__d_rcu_to_refcount(dentry, nd->seq))) {
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
rcu_read_unlock();
br_read_unlock(vfsmount_lock);
return -ECHILD;
}
BUG_ON(nd->inode != dentry->d_inode);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
mntget(nd->path.mnt);
rcu_read_unlock();
br_read_unlock(vfsmount_lock);
@@ -568,7 +568,7 @@ static __always_inline void set_root_rcu
do {
seq = read_seqbegin(&fs->lock);
nd->root = fs->root;
- nd->seq = __read_seqcount_begin(&nd->root.dentry->d_seq);
+ nd->seq = __read_seqbegin(&nd->root.dentry->d_lock);
} while (read_seqretry(&fs->lock, seq));
}
}
@@ -902,7 +902,7 @@ static bool __follow_mount_rcu(struct na
path->mnt = &mounted->mnt;
path->dentry = mounted->mnt.mnt_root;
nd->flags |= LOOKUP_JUMPED;
- nd->seq = read_seqcount_begin(&path->dentry->d_seq);
+ nd->seq = read_seqbegin(&path->dentry->d_lock);
/*
* Update the inode too. We don't need to re-check the
* dentry sequence number here after this d_inode read,
@@ -922,7 +922,7 @@ static void follow_mount_rcu(struct name
break;
nd->path.mnt = &mounted->mnt;
nd->path.dentry = mounted->mnt.mnt_root;
- nd->seq = read_seqcount_begin(&nd->path.dentry->d_seq);
+ nd->seq = read_seqbegin(&nd->path.dentry->d_lock);
}
}

@@ -940,8 +940,8 @@ static int follow_dotdot_rcu(struct name
struct dentry *parent = old->d_parent;
unsigned seq;

- seq = read_seqcount_begin(&parent->d_seq);
- if (read_seqcount_retry(&old->d_seq, nd->seq))
+ seq = read_seqbegin(&parent->d_lock);
+ if (read_seqretry(&old->d_lock, nd->seq))
goto failed;
nd->path.dentry = parent;
nd->seq = seq;
@@ -949,7 +949,7 @@ static int follow_dotdot_rcu(struct name
}
if (!follow_up_rcu(&nd->path))
break;
- nd->seq = read_seqcount_begin(&nd->path.dentry->d_seq);
+ nd->seq = read_seqbegin(&nd->path.dentry->d_lock);
}
follow_mount_rcu(nd);
nd->inode = nd->path.dentry->d_inode;
@@ -1135,7 +1135,7 @@ static int do_lookup(struct nameidata *n
goto unlazy;

/* Memory barrier in read_seqcount_begin of child is enough */
- if (__read_seqcount_retry(&parent->d_seq, nd->seq))
+ if (__read_seqretry(&parent->d_lock, nd->seq))
return -ECHILD;
nd->seq = seq;

@@ -1517,7 +1517,7 @@ static int path_init(int dfd, const char
if (flags & LOOKUP_RCU) {
br_read_lock(vfsmount_lock);
rcu_read_lock();
- nd->seq = __read_seqcount_begin(&nd->path.dentry->d_seq);
+ nd->seq = __read_seqbegin(&nd->path.dentry->d_lock);
} else {
path_get(&nd->path);
}
@@ -1547,7 +1547,7 @@ static int path_init(int dfd, const char
do {
seq = read_seqbegin(&fs->lock);
nd->path = fs->pwd;
- nd->seq = __read_seqcount_begin(&nd->path.dentry->d_seq);
+ nd->seq = __read_seqbegin(&nd->path.dentry->d_lock);
} while (read_seqretry(&fs->lock, seq));
} else {
get_fs_pwd(current->fs, &nd->path);
@@ -1576,7 +1576,7 @@ static int path_init(int dfd, const char
if (flags & LOOKUP_RCU) {
if (fput_needed)
*fp = file;
- nd->seq = __read_seqcount_begin(&nd->path.dentry->d_seq);
+ nd->seq = __read_seqbegin(&nd->path.dentry->d_lock);
br_read_lock(vfsmount_lock);
rcu_read_lock();
} else {
@@ -2638,10 +2638,10 @@ SYSCALL_DEFINE2(mkdir, const char __user
void dentry_unhash(struct dentry *dentry)
{
shrink_dcache_parent(dentry);
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (dentry->d_count == 1)
__d_drop(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}

int vfs_rmdir(struct inode *dir, struct dentry *dentry)
Index: tip/fs/namespace.c
===================================================================
--- tip.orig/fs/namespace.c
+++ tip/fs/namespace.c
@@ -577,9 +577,9 @@ static void dentry_reset_mounted(struct
return;
}
}
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
dentry->d_flags &= ~DCACHE_MOUNTED;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}

/*
@@ -605,9 +605,9 @@ void mnt_set_mountpoint(struct mount *mn
mnt_add_count(mnt, 1); /* essentially, that's mntget */
child_mnt->mnt_mountpoint = dget(dentry);
child_mnt->mnt_parent = mnt;
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
dentry->d_flags |= DCACHE_MOUNTED;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}

/*
Index: tip/fs/ncpfs/dir.c
===================================================================
--- tip.orig/fs/ncpfs/dir.c
+++ tip/fs/ncpfs/dir.c
@@ -388,7 +388,7 @@ ncp_dget_fpos(struct dentry *dentry, str
}

/* If a pointer is invalid, we search the dentry. */
- spin_lock(&parent->d_lock);
+ seq_spin_lock(&parent->d_lock);
next = parent->d_subdirs.next;
while (next != &parent->d_subdirs) {
dent = list_entry(next, struct dentry, d_u.d_child);
@@ -397,12 +397,12 @@ ncp_dget_fpos(struct dentry *dentry, str
dget(dent);
else
dent = NULL;
- spin_unlock(&parent->d_lock);
+ seq_spin_unlock(&parent->d_lock);
goto out;
}
next = next->next;
}
- spin_unlock(&parent->d_lock);
+ seq_spin_unlock(&parent->d_lock);
return NULL;

out:
Index: tip/fs/ncpfs/ncplib_kernel.h
===================================================================
--- tip.orig/fs/ncpfs/ncplib_kernel.h
+++ tip/fs/ncpfs/ncplib_kernel.h
@@ -191,7 +191,7 @@ ncp_renew_dentries(struct dentry *parent
struct list_head *next;
struct dentry *dentry;

- spin_lock(&parent->d_lock);
+ seq_spin_lock(&parent->d_lock);
next = parent->d_subdirs.next;
while (next != &parent->d_subdirs) {
dentry = list_entry(next, struct dentry, d_u.d_child);
@@ -203,7 +203,7 @@ ncp_renew_dentries(struct dentry *parent

next = next->next;
}
- spin_unlock(&parent->d_lock);
+ seq_spin_unlock(&parent->d_lock);
}

static inline void
@@ -213,7 +213,7 @@ ncp_invalidate_dircache_entries(struct d
struct list_head *next;
struct dentry *dentry;

- spin_lock(&parent->d_lock);
+ seq_spin_lock(&parent->d_lock);
next = parent->d_subdirs.next;
while (next != &parent->d_subdirs) {
dentry = list_entry(next, struct dentry, d_u.d_child);
@@ -221,7 +221,7 @@ ncp_invalidate_dircache_entries(struct d
ncp_age_dentry(server, dentry);
next = next->next;
}
- spin_unlock(&parent->d_lock);
+ seq_spin_unlock(&parent->d_lock);
}

struct ncp_cache_head {
Index: tip/fs/nfs/dir.c
===================================================================
--- tip.orig/fs/nfs/dir.c
+++ tip/fs/nfs/dir.c
@@ -1812,9 +1812,9 @@ static int nfs_unlink(struct inode *dir,
dfprintk(VFS, "NFS: unlink(%s/%ld, %s)\n", dir->i_sb->s_id,
dir->i_ino, dentry->d_name.name);

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (dentry->d_count > 1) {
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
/* Start asynchronous writeout of the inode */
write_inode_now(dentry->d_inode, 0);
error = nfs_sillyrename(dir, dentry);
@@ -1824,7 +1824,7 @@ static int nfs_unlink(struct inode *dir,
__d_drop(dentry);
need_rehash = 1;
}
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
error = nfs_safe_remove(dentry);
if (!error || error == -ENOENT) {
nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
Index: tip/fs/nfs/getroot.c
===================================================================
--- tip.orig/fs/nfs/getroot.c
+++ tip/fs/nfs/getroot.c
@@ -64,9 +64,9 @@ static int nfs_superblock_set_dummy_root
* Oops, since the test for IS_ROOT() will fail.
*/
spin_lock(&sb->s_root->d_inode->i_lock);
- spin_lock(&sb->s_root->d_lock);
+ seq_spin_lock(&sb->s_root->d_lock);
list_del_init(&sb->s_root->d_alias);
- spin_unlock(&sb->s_root->d_lock);
+ seq_spin_unlock(&sb->s_root->d_lock);
spin_unlock(&sb->s_root->d_inode->i_lock);
}
return 0;
@@ -126,12 +126,12 @@ struct dentry *nfs_get_root(struct super
}

security_d_instantiate(ret, inode);
- spin_lock(&ret->d_lock);
+ seq_spin_lock(&ret->d_lock);
if (IS_ROOT(ret) && !(ret->d_flags & DCACHE_NFSFS_RENAMED)) {
ret->d_fsdata = name;
name = NULL;
}
- spin_unlock(&ret->d_lock);
+ seq_spin_unlock(&ret->d_lock);
out:
if (name)
kfree(name);
@@ -250,12 +250,12 @@ struct dentry *nfs4_get_root(struct supe
}

security_d_instantiate(ret, inode);
- spin_lock(&ret->d_lock);
+ seq_spin_lock(&ret->d_lock);
if (IS_ROOT(ret) && !(ret->d_flags & DCACHE_NFSFS_RENAMED)) {
ret->d_fsdata = name;
name = NULL;
}
- spin_unlock(&ret->d_lock);
+ seq_spin_unlock(&ret->d_lock);
out:
if (name)
kfree(name);
Index: tip/fs/nfs/namespace.c
===================================================================
--- tip.orig/fs/nfs/namespace.c
+++ tip/fs/nfs/namespace.c
@@ -60,7 +60,7 @@ rename_retry:
seq = read_seqbegin(&rename_lock);
rcu_read_lock();
while (1) {
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (IS_ROOT(dentry))
break;
namelen = dentry->d_name.len;
@@ -70,17 +70,17 @@ rename_retry:
end -= namelen;
memcpy(end, dentry->d_name.name, namelen);
*--end = '/';
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
dentry = dentry->d_parent;
}
if (read_seqretry(&rename_lock, seq)) {
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
rcu_read_unlock();
goto rename_retry;
}
if (*end != '/') {
if (--buflen < 0) {
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
rcu_read_unlock();
goto Elong;
}
@@ -89,7 +89,7 @@ rename_retry:
*p = end;
base = dentry->d_fsdata;
if (!base) {
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
rcu_read_unlock();
WARN_ON(1);
return end;
@@ -100,17 +100,17 @@ rename_retry:
namelen--;
buflen -= namelen;
if (buflen < 0) {
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
rcu_read_unlock();
goto Elong;
}
end -= namelen;
memcpy(end, base, namelen);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
rcu_read_unlock();
return end;
Elong_unlock:
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
rcu_read_unlock();
if (read_seqretry(&rename_lock, seq))
goto rename_retry;
Index: tip/fs/nfs/unlink.c
===================================================================
--- tip.orig/fs/nfs/unlink.c
+++ tip/fs/nfs/unlink.c
@@ -156,7 +156,7 @@ static int nfs_do_call_unlink(struct den
*/
nfs_free_dname(data);
ret = nfs_copy_dname(alias, data);
- spin_lock(&alias->d_lock);
+ seq_spin_lock(&alias->d_lock);
if (ret == 0 && alias->d_inode != NULL &&
!(alias->d_flags & DCACHE_NFSFS_RENAMED)) {
devname_garbage = alias->d_fsdata;
@@ -165,7 +165,7 @@ static int nfs_do_call_unlink(struct den
ret = 1;
} else
ret = 0;
- spin_unlock(&alias->d_lock);
+ seq_spin_unlock(&alias->d_lock);
nfs_dec_sillycount(dir);
dput(alias);
/*
@@ -274,13 +274,13 @@ nfs_async_unlink(struct inode *dir, stru
data->res.dir_attr = &data->dir_attr;

status = -EBUSY;
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (dentry->d_flags & DCACHE_NFSFS_RENAMED)
goto out_unlock;
dentry->d_flags |= DCACHE_NFSFS_RENAMED;
devname_garbage = dentry->d_fsdata;
dentry->d_fsdata = data;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
/*
* If we'd displaced old cached devname, free it. At that
* point dentry is definitely not a root, so we won't need
@@ -290,7 +290,7 @@ nfs_async_unlink(struct inode *dir, stru
kfree(devname_garbage);
return 0;
out_unlock:
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
put_rpccred(data->cred);
out_free:
kfree(data);
@@ -312,13 +312,13 @@ nfs_complete_unlink(struct dentry *dentr
{
struct nfs_unlinkdata *data = NULL;

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (dentry->d_flags & DCACHE_NFSFS_RENAMED) {
dentry->d_flags &= ~DCACHE_NFSFS_RENAMED;
data = dentry->d_fsdata;
dentry->d_fsdata = NULL;
}
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);

if (data != NULL && (NFS_STALE(inode) || !nfs_call_unlink(dentry, data)))
nfs_free_unlinkdata(data);
@@ -328,17 +328,17 @@ nfs_complete_unlink(struct dentry *dentr
static void
nfs_cancel_async_unlink(struct dentry *dentry)
{
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (dentry->d_flags & DCACHE_NFSFS_RENAMED) {
struct nfs_unlinkdata *data = dentry->d_fsdata;

dentry->d_flags &= ~DCACHE_NFSFS_RENAMED;
dentry->d_fsdata = NULL;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
nfs_free_unlinkdata(data);
return;
}
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}

struct nfs_renamedata {
Index: tip/fs/nilfs2/namei.c
===================================================================
--- tip.orig/fs/nilfs2/namei.c
+++ tip/fs/nilfs2/namei.c
@@ -538,11 +538,11 @@ static int nilfs_encode_fh(struct dentry
if (connectable && !S_ISDIR(inode->i_mode)) {
struct inode *parent;

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
parent = dentry->d_parent->d_inode;
fid->parent_ino = parent->i_ino;
fid->parent_gen = parent->i_generation;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);

type = FILEID_NILFS_WITH_PARENT;
*lenp = NILFS_FID_SIZE_CONNECTABLE;
Index: tip/fs/notify/fsnotify.c
===================================================================
--- tip.orig/fs/notify/fsnotify.c
+++ tip/fs/notify/fsnotify.c
@@ -69,19 +69,19 @@ void __fsnotify_update_child_dentry_flag
/* run all of the children of the original inode and fix their
* d_flags to indicate parental interest (their parent is the
* original inode) */
- spin_lock(&alias->d_lock);
+ seq_spin_lock(&alias->d_lock);
list_for_each_entry(child, &alias->d_subdirs, d_u.d_child) {
if (!child->d_inode)
continue;

- spin_lock_nested(&child->d_lock, DENTRY_D_LOCK_NESTED);
+ seq_spin_lock_nested(&child->d_lock, DENTRY_D_LOCK_NESTED);
if (watched)
child->d_flags |= DCACHE_FSNOTIFY_PARENT_WATCHED;
else
child->d_flags &= ~DCACHE_FSNOTIFY_PARENT_WATCHED;
- spin_unlock(&child->d_lock);
+ seq_spin_unlock(&child->d_lock);
}
- spin_unlock(&alias->d_lock);
+ seq_spin_unlock(&alias->d_lock);
}
spin_unlock(&inode->i_lock);
}
Index: tip/fs/notify/vfsmount_mark.c
===================================================================
--- tip.orig/fs/notify/vfsmount_mark.c
+++ tip/fs/notify/vfsmount_mark.c
@@ -37,13 +37,13 @@ void fsnotify_clear_marks_by_mount(struc
struct mount *m = real_mount(mnt);
LIST_HEAD(free_list);

- spin_lock(&mnt->mnt_root->d_lock);
+ seq_spin_lock(&mnt->mnt_root->d_lock);
hlist_for_each_entry_safe(mark, pos, n, &m->mnt_fsnotify_marks, m.m_list) {
list_add(&mark->m.free_m_list, &free_list);
hlist_del_init_rcu(&mark->m.m_list);
fsnotify_get_mark(mark);
}
- spin_unlock(&mnt->mnt_root->d_lock);
+ seq_spin_unlock(&mnt->mnt_root->d_lock);

list_for_each_entry_safe(mark, lmark, &free_list, m.free_m_list) {
fsnotify_destroy_mark(mark);
@@ -66,7 +66,7 @@ static void fsnotify_recalc_vfsmount_mas
struct hlist_node *pos;
__u32 new_mask = 0;

- assert_spin_locked(&mnt->mnt_root->d_lock);
+ assert_seq_spin_locked(&mnt->mnt_root->d_lock);

hlist_for_each_entry(mark, pos, &m->mnt_fsnotify_marks, m.m_list)
new_mask |= mark->mask;
@@ -79,9 +79,9 @@ static void fsnotify_recalc_vfsmount_mas
*/
void fsnotify_recalc_vfsmount_mask(struct vfsmount *mnt)
{
- spin_lock(&mnt->mnt_root->d_lock);
+ seq_spin_lock(&mnt->mnt_root->d_lock);
fsnotify_recalc_vfsmount_mask_locked(mnt);
- spin_unlock(&mnt->mnt_root->d_lock);
+ seq_spin_unlock(&mnt->mnt_root->d_lock);
}

void fsnotify_destroy_vfsmount_mark(struct fsnotify_mark *mark)
@@ -91,14 +91,14 @@ void fsnotify_destroy_vfsmount_mark(stru
assert_spin_locked(&mark->lock);
assert_spin_locked(&mark->group->mark_lock);

- spin_lock(&mnt->mnt_root->d_lock);
+ seq_spin_lock(&mnt->mnt_root->d_lock);

hlist_del_init_rcu(&mark->m.m_list);
mark->m.mnt = NULL;

fsnotify_recalc_vfsmount_mask_locked(mnt);

- spin_unlock(&mnt->mnt_root->d_lock);
+ seq_spin_unlock(&mnt->mnt_root->d_lock);
}

static struct fsnotify_mark *fsnotify_find_vfsmount_mark_locked(struct fsnotify_group *group,
@@ -108,7 +108,7 @@ static struct fsnotify_mark *fsnotify_fi
struct fsnotify_mark *mark;
struct hlist_node *pos;

- assert_spin_locked(&mnt->mnt_root->d_lock);
+ assert_seq_spin_locked(&mnt->mnt_root->d_lock);

hlist_for_each_entry(mark, pos, &m->mnt_fsnotify_marks, m.m_list) {
if (mark->group == group) {
@@ -128,9 +128,9 @@ struct fsnotify_mark *fsnotify_find_vfsm
{
struct fsnotify_mark *mark;

- spin_lock(&mnt->mnt_root->d_lock);
+ seq_spin_lock(&mnt->mnt_root->d_lock);
mark = fsnotify_find_vfsmount_mark_locked(group, mnt);
- spin_unlock(&mnt->mnt_root->d_lock);
+ seq_spin_unlock(&mnt->mnt_root->d_lock);

return mark;
}
@@ -154,7 +154,7 @@ int fsnotify_add_vfsmount_mark(struct fs
assert_spin_locked(&mark->lock);
assert_spin_locked(&group->mark_lock);

- spin_lock(&mnt->mnt_root->d_lock);
+ seq_spin_lock(&mnt->mnt_root->d_lock);

mark->m.mnt = mnt;

@@ -189,7 +189,7 @@ int fsnotify_add_vfsmount_mark(struct fs
hlist_add_after_rcu(last, &mark->m.m_list);
out:
fsnotify_recalc_vfsmount_mask_locked(mnt);
- spin_unlock(&mnt->mnt_root->d_lock);
+ seq_spin_unlock(&mnt->mnt_root->d_lock);

return ret;
}
Index: tip/fs/ocfs2/dcache.c
===================================================================
--- tip.orig/fs/ocfs2/dcache.c
+++ tip/fs/ocfs2/dcache.c
@@ -177,16 +177,16 @@ struct dentry *ocfs2_find_local_alias(st
list_for_each(p, &inode->i_dentry) {
dentry = list_entry(p, struct dentry, d_alias);

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
if (ocfs2_match_dentry(dentry, parent_blkno, skip_unhashed)) {
trace_ocfs2_find_local_alias(dentry->d_name.len,
dentry->d_name.name);

dget_dlock(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
break;
}
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);

dentry = NULL;
}
Index: tip/fs/ocfs2/export.c
===================================================================
--- tip.orig/fs/ocfs2/export.c
+++ tip/fs/ocfs2/export.c
@@ -214,7 +214,7 @@ static int ocfs2_encode_fh(struct dentry
if (connectable && !S_ISDIR(inode->i_mode)) {
struct inode *parent;

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);

parent = dentry->d_parent->d_inode;
blkno = OCFS2_I(parent)->ip_blkno;
@@ -224,7 +224,7 @@ static int ocfs2_encode_fh(struct dentry
fh[4] = cpu_to_le32((u32)(blkno & 0xffffffff));
fh[5] = cpu_to_le32(generation);

- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);

len = 6;
type = 2;
Index: tip/fs/reiserfs/inode.c
===================================================================
--- tip.orig/fs/reiserfs/inode.c
+++ tip/fs/reiserfs/inode.c
@@ -1614,7 +1614,7 @@ int reiserfs_encode_fh(struct dentry *de
if (maxlen < 5 || !need_parent)
return 3;

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
inode = dentry->d_parent->d_inode;
data[3] = inode->i_ino;
data[4] = le32_to_cpu(INODE_PKEY(inode)->k_dir_id);
@@ -1623,7 +1623,7 @@ int reiserfs_encode_fh(struct dentry *de
data[5] = inode->i_generation;
*lenp = 6;
}
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
return *lenp;
}

Index: tip/fs/udf/namei.c
===================================================================
--- tip.orig/fs/udf/namei.c
+++ tip/fs/udf/namei.c
@@ -1296,13 +1296,13 @@ static int udf_encode_fh(struct dentry *
fid->udf.generation = inode->i_generation;

if (connectable && !S_ISDIR(inode->i_mode)) {
- spin_lock(&de->d_lock);
+ seq_spin_lock(&de->d_lock);
inode = de->d_parent->d_inode;
location = UDF_I(inode)->i_location;
fid->udf.parent_block = location.logicalBlockNum;
fid->udf.parent_partref = location.partitionReferenceNum;
fid->udf.parent_generation = inode->i_generation;
- spin_unlock(&de->d_lock);
+ seq_spin_unlock(&de->d_lock);
*lenp = 5;
type = FILEID_UDF_WITH_PARENT;
}
Index: tip/fs/xfs/xfs_export.c
===================================================================
--- tip.orig/fs/xfs/xfs_export.c
+++ tip/fs/xfs/xfs_export.c
@@ -97,20 +97,20 @@ xfs_fs_encode_fh(

switch (fileid_type) {
case FILEID_INO32_GEN_PARENT:
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
fid->i32.parent_ino = XFS_I(dentry->d_parent->d_inode)->i_ino;
fid->i32.parent_gen = dentry->d_parent->d_inode->i_generation;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
/*FALLTHRU*/
case FILEID_INO32_GEN:
fid->i32.ino = XFS_I(inode)->i_ino;
fid->i32.gen = inode->i_generation;
break;
case FILEID_INO32_GEN_PARENT | XFS_FILEID_TYPE_64FLAG:
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
fid64->parent_ino = XFS_I(dentry->d_parent->d_inode)->i_ino;
fid64->parent_gen = dentry->d_parent->d_inode->i_generation;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
/*FALLTHRU*/
case FILEID_INO32_GEN | XFS_FILEID_TYPE_64FLAG:
fid64->ino = XFS_I(inode)->i_ino;
Index: tip/include/linux/dcache.h
===================================================================
--- tip.orig/include/linux/dcache.h
+++ tip/include/linux/dcache.h
@@ -88,7 +88,8 @@ extern unsigned int full_name_hash(const
struct dentry {
/* RCU lookup touched fields */
unsigned int d_flags; /* protected by d_lock */
- seqcount_t d_seq; /* per dentry seqlock */
+ unsigned int d_count; /* (Ref lookup) protected by d_lock */
+ seqlock_t d_lock; /* per dentry seqlock */
struct hlist_bl_node d_hash; /* lookup hash list */
struct dentry *d_parent; /* parent directory */
struct qstr d_name;
@@ -97,8 +98,6 @@ struct dentry {
unsigned char d_iname[DNAME_INLINE_LEN]; /* small names */

/* Ref lookup also touches following */
- unsigned int d_count; /* protected by d_lock */
- spinlock_t d_lock; /* per dentry lock */
const struct dentry_operations *d_op;
struct super_block *d_sb; /* The root of the dentry tree */
unsigned long d_time; /* used by d_revalidate */
@@ -298,8 +297,8 @@ static inline int __d_rcu_to_refcount(st
{
int ret = 0;

- assert_spin_locked(&dentry->d_lock);
- if (!read_seqcount_retry(&dentry->d_seq, seq)) {
+ assert_seq_spin_locked(&dentry->d_lock);
+ if (!read_seqretry(&dentry->d_lock, seq)) {
ret = 1;
dentry->d_count++;
}
@@ -342,9 +341,9 @@ static inline struct dentry *dget_dlock(
static inline struct dentry *dget(struct dentry *dentry)
{
if (dentry) {
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
dget_dlock(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}
return dentry;
}
@@ -375,9 +374,9 @@ static inline int cant_mount(struct dent

static inline void dont_mount(struct dentry *dentry)
{
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
dentry->d_flags |= DCACHE_CANT_MOUNT;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}

extern void dput(struct dentry *);
Index: tip/include/linux/fs.h
===================================================================
--- tip.orig/include/linux/fs.h
+++ tip/include/linux/fs.h
@@ -2569,9 +2569,9 @@ static inline ino_t parent_ino(struct de
* Don't strictly need d_lock here? If the parent ino could change
* then surely we'd have a deeper race in the caller?
*/
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
res = dentry->d_parent->d_inode->i_ino;
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
return res;
}

Index: tip/include/linux/fsnotify_backend.h
===================================================================
--- tip.orig/include/linux/fsnotify_backend.h
+++ tip/include/linux/fsnotify_backend.h
@@ -329,7 +329,7 @@ static inline void __fsnotify_update_dca
{
struct dentry *parent;

- assert_spin_locked(&dentry->d_lock);
+ assert_seq_spin_locked(&dentry->d_lock);

/*
* Serialisation of setting PARENT_WATCHED on the dentries is provided
@@ -353,9 +353,9 @@ static inline void __fsnotify_d_instanti
if (!inode)
return;

- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
__fsnotify_update_dcache_flags(dentry);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}

/* called from fsnotify listeners, such as fanotify or dnotify */
Index: tip/kernel/cgroup.c
===================================================================
--- tip.orig/kernel/cgroup.c
+++ tip/kernel/cgroup.c
@@ -887,29 +887,29 @@ static void cgroup_clear_directory(struc
struct list_head *node;

BUG_ON(!mutex_is_locked(&dentry->d_inode->i_mutex));
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
node = dentry->d_subdirs.next;
while (node != &dentry->d_subdirs) {
struct dentry *d = list_entry(node, struct dentry, d_u.d_child);

- spin_lock_nested(&d->d_lock, DENTRY_D_LOCK_NESTED);
+ seq_spin_lock_nested(&d->d_lock, DENTRY_D_LOCK_NESTED);
list_del_init(node);
if (d->d_inode) {
/* This should never be called on a cgroup
* directory with child cgroups */
BUG_ON(d->d_inode->i_mode & S_IFDIR);
dget_dlock(d);
- spin_unlock(&d->d_lock);
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&d->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
d_delete(d);
simple_unlink(dentry->d_inode, d);
dput(d);
- spin_lock(&dentry->d_lock);
+ seq_spin_lock(&dentry->d_lock);
} else
- spin_unlock(&d->d_lock);
+ seq_spin_unlock(&d->d_lock);
node = dentry->d_subdirs.next;
}
- spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
}

/*
@@ -922,11 +922,11 @@ static void cgroup_d_remove_dir(struct d
cgroup_clear_directory(dentry);

parent = dentry->d_parent;
- spin_lock(&parent->d_lock);
- spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
+ seq_spin_lock(&parent->d_lock);
+ seq_spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
list_del_init(&dentry->d_u.d_child);
- spin_unlock(&dentry->d_lock);
- spin_unlock(&parent->d_lock);
+ seq_spin_unlock(&dentry->d_lock);
+ seq_spin_unlock(&parent->d_lock);
remove_dir(dentry);
}

Index: tip/net/sunrpc/rpc_pipe.c
===================================================================
--- tip.orig/net/sunrpc/rpc_pipe.c
+++ tip/net/sunrpc/rpc_pipe.c
@@ -396,14 +396,14 @@ rpc_info_open(struct inode *inode, struc
if (!ret) {
struct seq_file *m = file->private_data;

- spin_lock(&file->f_path.dentry->d_lock);
+ seq_spin_lock(&file->f_path.dentry->d_lock);
if (!d_unhashed(file->f_path.dentry))
clnt = RPC_I(inode)->private;
if (clnt != NULL && atomic_inc_not_zero(&clnt->cl_count)) {
- spin_unlock(&file->f_path.dentry->d_lock);
+ seq_spin_unlock(&file->f_path.dentry->d_lock);
m->private = clnt;
} else {
- spin_unlock(&file->f_path.dentry->d_lock);
+ seq_spin_unlock(&file->f_path.dentry->d_lock);
single_release(inode, file);
ret = -EINVAL;
}
Index: tip/security/selinux/selinuxfs.c
===================================================================
--- tip.orig/security/selinux/selinuxfs.c
+++ tip/security/selinux/selinuxfs.c
@@ -1188,28 +1188,28 @@ static void sel_remove_entries(struct de
{
struct list_head *node;

- spin_lock(&de->d_lock);
+ seq_spin_lock(&de->d_lock);
node = de->d_subdirs.next;
while (node != &de->d_subdirs) {
struct dentry *d = list_entry(node, struct dentry, d_u.d_child);

- spin_lock_nested(&d->d_lock, DENTRY_D_LOCK_NESTED);
+ seq_spin_lock_nested(&d->d_lock, DENTRY_D_LOCK_NESTED);
list_del_init(node);

if (d->d_inode) {
dget_dlock(d);
- spin_unlock(&de->d_lock);
- spin_unlock(&d->d_lock);
+ seq_spin_unlock(&de->d_lock);
+ seq_spin_unlock(&d->d_lock);
d_delete(d);
simple_unlink(de->d_inode, d);
dput(d);
- spin_lock(&de->d_lock);
+ seq_spin_lock(&de->d_lock);
} else
- spin_unlock(&d->d_lock);
+ seq_spin_unlock(&d->d_lock);
node = de->d_subdirs.next;
}

- spin_unlock(&de->d_lock);
+ seq_spin_unlock(&de->d_lock);
}

#define BOOL_DIR_NAME "booleans"

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

Next message: Thomas Gleixner: "[patch 3/5] seqlock: Provide seq_spin_* functions"
Previous message: Thomas Gleixner: "[patch 1/5] seqlock: Remove unused functions"
In reply to: Thomas Gleixner: "Re: [patch 1/5] seqlock: Remove unused functions"
Next in thread: Thomas Gleixner: "[patch 3/5] seqlock: Provide seq_spin_* functions"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]