[PATCH 13/16] GFS2: decouple quota allocations from block allocations

From: Steven Whitehouse
Date: Thu Jan 05 2012 - 07:17:04 EST

From: Bob Peterson <rpeterso@xxxxxxxxxx>

This patch separates the code pertaining to allocations into two
parts: quota-related information and block reservations.
This patch also moves all the block reservation structure allocations to
function gfs2_inplace_reserve to simplify the code, and moves
the frees to function gfs2_inplace_release.

Signed-off-by: Bob Peterson <rpeterso@xxxxxxxxxx>
Signed-off-by: Steven Whitehouse <swhiteho@xxxxxxxxxx>

diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c
index 4858e1f..501e5cb 100644
--- a/fs/gfs2/aops.c
+++ b/fs/gfs2/aops.c
@@ -615,7 +615,7 @@ static int gfs2_write_begin(struct file *file, struct address_space *mapping,
unsigned int data_blocks = 0, ind_blocks = 0, rblocks;
int alloc_required;
int error = 0;
- struct gfs2_alloc *al = NULL;
+ struct gfs2_qadata *qa = NULL;
pgoff_t index = pos >> PAGE_CACHE_SHIFT;
unsigned from = pos & (PAGE_CACHE_SIZE - 1);
struct page *page;
@@ -639,8 +639,8 @@ static int gfs2_write_begin(struct file *file, struct address_space *mapping,
gfs2_write_calc_reserv(ip, len, &data_blocks, &ind_blocks);

if (alloc_required) {
- al = gfs2_alloc_get(ip);
- if (!al) {
+ qa = gfs2_qadata_get(ip);
+ if (!qa) {
error = -ENOMEM;
goto out_unlock;
}
@@ -649,8 +649,7 @@ static int gfs2_write_begin(struct file *file, struct address_space *mapping,
if (error)
goto out_alloc_put;

- al->al_requested = data_blocks + ind_blocks;
- error = gfs2_inplace_reserve(ip);
+ error = gfs2_inplace_reserve(ip, data_blocks + ind_blocks);
if (error)
goto out_qunlock;
}
@@ -711,7 +710,7 @@ out_trans_fail:
out_qunlock:
gfs2_quota_unlock(ip);
out_alloc_put:
- gfs2_alloc_put(ip);
+ gfs2_qadata_put(ip);
}
out_unlock:
if (&ip->i_inode == sdp->sd_rindex) {
@@ -848,7 +847,7 @@ static int gfs2_write_end(struct file *file, struct address_space *mapping,
struct gfs2_sbd *sdp = GFS2_SB(inode);
struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode);
struct buffer_head *dibh;
- struct gfs2_alloc *al = ip->i_alloc;
+ struct gfs2_qadata *qa = ip->i_qadata;
unsigned int from = pos & (PAGE_CACHE_SIZE - 1);
unsigned int to = from + len;
int ret;
@@ -880,10 +879,11 @@ static int gfs2_write_end(struct file *file, struct address_space *mapping,
brelse(dibh);
failed:
gfs2_trans_end(sdp);
- if (al) {
+ if (ip->i_res)
gfs2_inplace_release(ip);
+ if (qa) {
gfs2_quota_unlock(ip);
- gfs2_alloc_put(ip);
+ gfs2_qadata_put(ip);
}
if (inode == sdp->sd_rindex) {
gfs2_glock_dq(&m_ip->i_gh);
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index cb74312..14a7040 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -1041,7 +1041,7 @@ static int trunc_dealloc(struct gfs2_inode *ip, u64 size)
lblock = (size - 1) >> sdp->sd_sb.sb_bsize_shift;

find_metapath(sdp, lblock, &mp, ip->i_height);
- if (!gfs2_alloc_get(ip))
+ if (!gfs2_qadata_get(ip))
return -ENOMEM;

error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
@@ -1061,7 +1061,7 @@ static int trunc_dealloc(struct gfs2_inode *ip, u64 size)
gfs2_quota_unhold(ip);

out:
- gfs2_alloc_put(ip);
+ gfs2_qadata_put(ip);
return error;
}

@@ -1163,21 +1163,20 @@ static int do_grow(struct inode *inode, u64 size)
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_sbd *sdp = GFS2_SB(inode);
struct buffer_head *dibh;
- struct gfs2_alloc *al = NULL;
+ struct gfs2_qadata *qa = NULL;
int error;

if (gfs2_is_stuffed(ip) &&
(size > (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode)))) {
- al = gfs2_alloc_get(ip);
- if (al == NULL)
+ qa = gfs2_qadata_get(ip);
+ if (qa == NULL)
return -ENOMEM;

error = gfs2_quota_lock_check(ip);
if (error)
goto do_grow_alloc_put;

- al->al_requested = 1;
- error = gfs2_inplace_reserve(ip);
+ error = gfs2_inplace_reserve(ip, 1);
if (error)
goto do_grow_qunlock;
}
@@ -1186,7 +1185,7 @@ static int do_grow(struct inode *inode, u64 size)
if (error)
goto do_grow_release;

- if (al) {
+ if (qa) {
error = gfs2_unstuff_dinode(ip, NULL);
if (error)
goto do_end_trans;
@@ -1205,12 +1204,12 @@ static int do_grow(struct inode *inode, u64 size)
do_end_trans:
gfs2_trans_end(sdp);
do_grow_release:
- if (al) {
+ if (qa) {
gfs2_inplace_release(ip);
do_grow_qunlock:
gfs2_quota_unlock(ip);
do_grow_alloc_put:
- gfs2_alloc_put(ip);
+ gfs2_qadata_put(ip);
}
return error;
}
diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index f8485da..c35573a 100644
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -1850,7 +1850,7 @@ static int leaf_dealloc(struct gfs2_inode *dip, u32 index, u32 len,
if (!ht)
return -ENOMEM;

- if (!gfs2_alloc_get(dip)) {
+ if (!gfs2_qadata_get(dip)) {
error = -ENOMEM;
goto out;
}
@@ -1939,7 +1939,7 @@ out_rlist:
gfs2_rlist_free(&rlist);
gfs2_quota_unhold(dip);
out_put:
- gfs2_alloc_put(dip);
+ gfs2_qadata_put(dip);
out:
kfree(ht);
return error;
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 9b6c6ac..42ceb23 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -365,7 +365,7 @@ static int gfs2_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
u64 pos = page->index << PAGE_CACHE_SHIFT;
unsigned int data_blocks, ind_blocks, rblocks;
struct gfs2_holder gh;
- struct gfs2_alloc *al;
+ struct gfs2_qadata *qa;
loff_t size;
int ret;

@@ -393,16 +393,15 @@ static int gfs2_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
}

ret = -ENOMEM;
- al = gfs2_alloc_get(ip);
- if (al == NULL)
+ qa = gfs2_qadata_get(ip);
+ if (qa == NULL)
goto out_unlock;

ret = gfs2_quota_lock_check(ip);
if (ret)
goto out_alloc_put;
gfs2_write_calc_reserv(ip, PAGE_CACHE_SIZE, &data_blocks, &ind_blocks);
- al->al_requested = data_blocks + ind_blocks;
- ret = gfs2_inplace_reserve(ip);
+ ret = gfs2_inplace_reserve(ip, data_blocks + ind_blocks);
if (ret)
goto out_quota_unlock;

@@ -448,7 +447,7 @@ out_trans_fail:
out_quota_unlock:
gfs2_quota_unlock(ip);
out_alloc_put:
- gfs2_alloc_put(ip);
+ gfs2_qadata_put(ip);
out_unlock:
gfs2_glock_dq(&gh);
out:
@@ -750,7 +749,7 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset,
struct gfs2_inode *ip = GFS2_I(inode);
unsigned int data_blocks = 0, ind_blocks = 0, rblocks;
loff_t bytes, max_bytes;
- struct gfs2_alloc *al;
+ struct gfs2_qadata *qa;
int error;
const loff_t pos = offset;
const loff_t count = len;
@@ -784,8 +783,8 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset,
while (len > 0) {
if (len < bytes)
bytes = len;
- al = gfs2_alloc_get(ip);
- if (!al) {
+ qa = gfs2_qadata_get(ip);
+ if (!qa) {
error = -ENOMEM;
goto out_unlock;
}
@@ -797,8 +796,7 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset,
retry:
gfs2_write_calc_reserv(ip, bytes, &data_blocks, &ind_blocks);

- al->al_requested = data_blocks + ind_blocks;
- error = gfs2_inplace_reserve(ip);
+ error = gfs2_inplace_reserve(ip, data_blocks + ind_blocks);
if (error) {
if (error == -ENOSPC && bytes > sdp->sd_sb.sb_bsize) {
bytes >>= 1;
@@ -812,7 +810,6 @@ retry:
max_bytes = bytes;
calc_max_reserv(ip, (len > max_chunk_size)? max_chunk_size: len,
&max_bytes, &data_blocks, &ind_blocks);
- al->al_requested = data_blocks + ind_blocks;

rblocks = RES_DINODE + ind_blocks + RES_STATFS + RES_QUOTA +
RES_RG_HDR + gfs2_rg_blocks(ip);
@@ -834,7 +831,7 @@ retry:
offset += max_bytes;
gfs2_inplace_release(ip);
gfs2_quota_unlock(ip);
- gfs2_alloc_put(ip);
+ gfs2_qadata_put(ip);
}

if (error == 0)
@@ -846,7 +843,7 @@ out_trans_fail:
out_qunlock:
gfs2_quota_unlock(ip);
out_alloc_put:
- gfs2_alloc_put(ip);
+ gfs2_qadata_put(ip);
out_unlock:
gfs2_glock_dq(&ip->i_gh);
out_uninit:
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 32f5bec..e1d3bb5 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -244,16 +244,16 @@ struct gfs2_glock {

#define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */

-struct gfs2_alloc {
+struct gfs2_qadata { /* quota allocation data */
/* Quota stuff */
- struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
- struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
- unsigned int al_qd_num;
-
- u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
+ struct gfs2_quota_data *qa_qd[2*MAXQUOTAS];
+ struct gfs2_holder qa_qd_ghs[2*MAXQUOTAS];
+ unsigned int qa_qd_num;
+};

- /* Filled in by gfs2_inplace_reserve() */
- struct gfs2_holder al_rgd_gh;
+struct gfs2_blkreserv {
+ u32 rs_requested; /* Filled in by caller of gfs2_inplace_reserve() */
+ struct gfs2_holder rs_rgd_gh; /* Filled in by gfs2_inplace_reserve() */
};

enum {
@@ -274,7 +274,8 @@ struct gfs2_inode {
struct gfs2_glock *i_gl; /* Move into i_gh? */
struct gfs2_holder i_iopen_gh;
struct gfs2_holder i_gh; /* for prepare/commit_write only */
- struct gfs2_alloc *i_alloc;
+ struct gfs2_qadata *i_qadata; /* quota allocation data */
+ struct gfs2_blkreserv *i_res; /* resource group block reservation */
struct gfs2_rgrpd *i_rgd;
u64 i_goal; /* goal block for allocations */
struct rw_semaphore i_rw_mutex;
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 3ab192b..ab8c429 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -391,11 +391,11 @@ static int alloc_dinode(struct gfs2_inode *dip, u64 *no_addr, u64 *generation)
int error;
int dblocks = 0;

- if (gfs2_alloc_get(dip) == NULL)
- return -ENOMEM;
+ error = gfs2_rindex_update(sdp);
+ if (error)
+ fs_warn(sdp, "rindex update returns %d\n", error);

- dip->i_alloc->al_requested = RES_DINODE;
- error = gfs2_inplace_reserve(dip);
+ error = gfs2_inplace_reserve(dip, RES_DINODE);
if (error)
goto out;

@@ -410,7 +410,6 @@ static int alloc_dinode(struct gfs2_inode *dip, u64 *no_addr, u64 *generation)
out_ipreserv:
gfs2_inplace_release(dip);
out:
- gfs2_alloc_put(dip);
return error;
}

@@ -526,7 +525,7 @@ static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
int error;

munge_mode_uid_gid(dip, &mode, &uid, &gid);
- if (!gfs2_alloc_get(dip))
+ if (!gfs2_qadata_get(dip))
return -ENOMEM;

error = gfs2_quota_lock(dip, uid, gid);
@@ -548,7 +547,7 @@ static int make_dinode(struct gfs2_inode *dip, struct gfs2_glock *gl,
out_quota:
gfs2_quota_unlock(dip);
out:
- gfs2_alloc_put(dip);
+ gfs2_qadata_put(dip);
return error;
}

@@ -556,13 +555,13 @@ static int link_dinode(struct gfs2_inode *dip, const struct qstr *name,
struct gfs2_inode *ip)
{
struct gfs2_sbd *sdp = GFS2_SB(&dip->i_inode);
- struct gfs2_alloc *al;
+ struct gfs2_qadata *qa;
int alloc_required;
struct buffer_head *dibh;
int error;

- al = gfs2_alloc_get(dip);
- if (!al)
+ qa = gfs2_qadata_get(dip);
+ if (!qa)
return -ENOMEM;

error = gfs2_quota_lock(dip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
@@ -577,9 +576,7 @@ static int link_dinode(struct gfs2_inode *dip, const struct qstr *name,
if (error)
goto fail_quota_locks;

- al->al_requested = sdp->sd_max_dirres;
-
- error = gfs2_inplace_reserve(dip);
+ error = gfs2_inplace_reserve(dip, sdp->sd_max_dirres);
if (error)
goto fail_quota_locks;

@@ -620,7 +617,7 @@ fail_quota_locks:
gfs2_quota_unlock(dip);

fail:
- gfs2_alloc_put(dip);
+ gfs2_qadata_put(dip);
return error;
}

@@ -729,9 +726,12 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry,
brelse(bh);

gfs2_trans_end(sdp);
- gfs2_inplace_release(dip);
+ /* Check if we reserved space in the rgrp. Function link_dinode may
+ not, depending on whether alloc is required. */
+ if (dip->i_res)
+ gfs2_inplace_release(dip);
gfs2_quota_unlock(dip);
- gfs2_alloc_put(dip);
+ gfs2_qadata_put(dip);
mark_inode_dirty(inode);
gfs2_glock_dq_uninit_m(2, ghs);
d_instantiate(dentry, inode);
@@ -876,8 +876,9 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
error = 0;

if (alloc_required) {
- struct gfs2_alloc *al = gfs2_alloc_get(dip);
- if (!al) {
+ struct gfs2_qadata *qa = gfs2_qadata_get(dip);
+
+ if (!qa) {
error = -ENOMEM;
goto out_gunlock;
}
@@ -886,9 +887,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
if (error)
goto out_alloc;

- al->al_requested = sdp->sd_max_dirres;
-
- error = gfs2_inplace_reserve(dip);
+ error = gfs2_inplace_reserve(dip, sdp->sd_max_dirres);
if (error)
goto out_gunlock_q;

@@ -931,7 +930,7 @@ out_gunlock_q:
gfs2_quota_unlock(dip);
out_alloc:
if (alloc_required)
- gfs2_alloc_put(dip);
+ gfs2_qadata_put(dip);
out_gunlock:
gfs2_glock_dq(ghs + 1);
out_child:
@@ -1354,8 +1353,9 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
error = 0;

if (alloc_required) {
- struct gfs2_alloc *al = gfs2_alloc_get(ndip);
- if (!al) {
+ struct gfs2_qadata *qa = gfs2_qadata_get(ndip);
+
+ if (!qa) {
error = -ENOMEM;
goto out_gunlock;
}
@@ -1364,9 +1364,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
if (error)
goto out_alloc;

- al->al_requested = sdp->sd_max_dirres;
-
- error = gfs2_inplace_reserve(ndip);
+ error = gfs2_inplace_reserve(ndip, sdp->sd_max_dirres);
if (error)
goto out_gunlock_q;

@@ -1427,7 +1425,7 @@ out_gunlock_q:
gfs2_quota_unlock(ndip);
out_alloc:
if (alloc_required)
- gfs2_alloc_put(ndip);
+ gfs2_qadata_put(ndip);
out_gunlock:
while (x--) {
gfs2_glock_dq(ghs + x);
@@ -1588,7 +1586,7 @@ static int setattr_chown(struct inode *inode, struct iattr *attr)
if (!(attr->ia_valid & ATTR_GID) || ogid == ngid)
ogid = ngid = NO_QUOTA_CHANGE;

- if (!gfs2_alloc_get(ip))
+ if (!gfs2_qadata_get(ip))
return -ENOMEM;

error = gfs2_quota_lock(ip, nuid, ngid);
@@ -1620,7 +1618,7 @@ out_end_trans:
out_gunlock_q:
gfs2_quota_unlock(ip);
out_alloc:
- gfs2_alloc_put(ip);
+ gfs2_qadata_put(ip);
return error;
}

diff --git a/fs/gfs2/main.c b/fs/gfs2/main.c
index 8a139ff..c150298 100644
--- a/fs/gfs2/main.c
+++ b/fs/gfs2/main.c
@@ -40,7 +40,8 @@ static void gfs2_init_inode_once(void *foo)
inode_init_once(&ip->i_inode);
init_rwsem(&ip->i_rw_mutex);
INIT_LIST_HEAD(&ip->i_trunc_list);
- ip->i_alloc = NULL;
+ ip->i_qadata = NULL;
+ ip->i_res = NULL;
ip->i_hash_cache = NULL;
}

diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index d1962b2..98a01db 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -494,11 +494,11 @@ static void qdsb_put(struct gfs2_quota_data *qd)
int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct gfs2_alloc *al = ip->i_alloc;
- struct gfs2_quota_data **qd = al->al_qd;
+ struct gfs2_qadata *qa = ip->i_qadata;
+ struct gfs2_quota_data **qd = qa->qa_qd;
int error;

- if (gfs2_assert_warn(sdp, !al->al_qd_num) ||
+ if (gfs2_assert_warn(sdp, !qa->qa_qd_num) ||
gfs2_assert_warn(sdp, !test_bit(GIF_QD_LOCKED, &ip->i_flags)))
return -EIO;

@@ -508,20 +508,20 @@ int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid)
error = qdsb_get(sdp, QUOTA_USER, ip->i_inode.i_uid, qd);
if (error)
goto out;
- al->al_qd_num++;
+ qa->qa_qd_num++;
qd++;

error = qdsb_get(sdp, QUOTA_GROUP, ip->i_inode.i_gid, qd);
if (error)
goto out;
- al->al_qd_num++;
+ qa->qa_qd_num++;
qd++;

if (uid != NO_QUOTA_CHANGE && uid != ip->i_inode.i_uid) {
error = qdsb_get(sdp, QUOTA_USER, uid, qd);
if (error)
goto out;
- al->al_qd_num++;
+ qa->qa_qd_num++;
qd++;
}

@@ -529,7 +529,7 @@ int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid)
error = qdsb_get(sdp, QUOTA_GROUP, gid, qd);
if (error)
goto out;
- al->al_qd_num++;
+ qa->qa_qd_num++;
qd++;
}

@@ -542,16 +542,16 @@ out:
void gfs2_quota_unhold(struct gfs2_inode *ip)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct gfs2_alloc *al = ip->i_alloc;
+ struct gfs2_qadata *qa = ip->i_qadata;
unsigned int x;

gfs2_assert_warn(sdp, !test_bit(GIF_QD_LOCKED, &ip->i_flags));

- for (x = 0; x < al->al_qd_num; x++) {
- qdsb_put(al->al_qd[x]);
- al->al_qd[x] = NULL;
+ for (x = 0; x < qa->qa_qd_num; x++) {
+ qdsb_put(qa->qa_qd[x]);
+ qa->qa_qd[x] = NULL;
}
- al->al_qd_num = 0;
+ qa->qa_qd_num = 0;
}

static int sort_qd(const void *a, const void *b)
@@ -762,7 +762,6 @@ static int do_sync(unsigned int num_qd, struct gfs2_quota_data **qda)
struct gfs2_quota_data *qd;
loff_t offset;
unsigned int nalloc = 0, blocks;
- struct gfs2_alloc *al = NULL;
int error;

gfs2_write_calc_reserv(ip, sizeof(struct gfs2_quota),
@@ -792,26 +791,19 @@ static int do_sync(unsigned int num_qd, struct gfs2_quota_data **qda)
nalloc++;
}

- al = gfs2_alloc_get(ip);
- if (!al) {
- error = -ENOMEM;
- goto out_gunlock;
- }
/*
* 1 blk for unstuffing inode if stuffed. We add this extra
* block to the reservation unconditionally. If the inode
* doesn't need unstuffing, the block will be released to the
* rgrp since it won't be allocated during the transaction
*/
- al->al_requested = 1;
/* +3 in the end for unstuffing block, inode size update block
* and another block in case quota straddles page boundary and
* two blocks need to be updated instead of 1 */
blocks = num_qd * data_blocks + RES_DINODE + num_qd + 3;

- if (nalloc)
- al->al_requested += nalloc * (data_blocks + ind_blocks);
- error = gfs2_inplace_reserve(ip);
+ error = gfs2_inplace_reserve(ip, 1 +
+ (nalloc * (data_blocks + ind_blocks)));
if (error)
goto out_alloc;

@@ -840,8 +832,6 @@ out_end_trans:
out_ipres:
gfs2_inplace_release(ip);
out_alloc:
- gfs2_alloc_put(ip);
-out_gunlock:
gfs2_glock_dq_uninit(&i_gh);
out:
while (qx--)
@@ -925,7 +915,7 @@ fail:
int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct gfs2_alloc *al = ip->i_alloc;
+ struct gfs2_qadata *qa = ip->i_qadata;
struct gfs2_quota_data *qd;
unsigned int x;
int error = 0;
@@ -938,15 +928,15 @@ int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid)
sdp->sd_args.ar_quota != GFS2_QUOTA_ON)
return 0;

- sort(al->al_qd, al->al_qd_num, sizeof(struct gfs2_quota_data *),
+ sort(qa->qa_qd, qa->qa_qd_num, sizeof(struct gfs2_quota_data *),
sort_qd, NULL);

- for (x = 0; x < al->al_qd_num; x++) {
+ for (x = 0; x < qa->qa_qd_num; x++) {
int force = NO_FORCE;
- qd = al->al_qd[x];
+ qd = qa->qa_qd[x];
if (test_and_clear_bit(QDF_REFRESH, &qd->qd_flags))
force = FORCE;
- error = do_glock(qd, force, &al->al_qd_ghs[x]);
+ error = do_glock(qd, force, &qa->qa_qd_ghs[x]);
if (error)
break;
}
@@ -955,7 +945,7 @@ int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid)
set_bit(GIF_QD_LOCKED, &ip->i_flags);
else {
while (x--)
- gfs2_glock_dq_uninit(&al->al_qd_ghs[x]);
+ gfs2_glock_dq_uninit(&qa->qa_qd_ghs[x]);
gfs2_quota_unhold(ip);
}

@@ -1000,7 +990,7 @@ static int need_sync(struct gfs2_quota_data *qd)

void gfs2_quota_unlock(struct gfs2_inode *ip)
{
- struct gfs2_alloc *al = ip->i_alloc;
+ struct gfs2_qadata *qa = ip->i_qadata;
struct gfs2_quota_data *qda[4];
unsigned int count = 0;
unsigned int x;
@@ -1008,14 +998,14 @@ void gfs2_quota_unlock(struct gfs2_inode *ip)
if (!test_and_clear_bit(GIF_QD_LOCKED, &ip->i_flags))
goto out;

- for (x = 0; x < al->al_qd_num; x++) {
+ for (x = 0; x < qa->qa_qd_num; x++) {
struct gfs2_quota_data *qd;
int sync;

- qd = al->al_qd[x];
+ qd = qa->qa_qd[x];
sync = need_sync(qd);

- gfs2_glock_dq_uninit(&al->al_qd_ghs[x]);
+ gfs2_glock_dq_uninit(&qa->qa_qd_ghs[x]);

if (sync && qd_trylock(qd))
qda[count++] = qd;
@@ -1048,7 +1038,7 @@ static int print_message(struct gfs2_quota_data *qd, char *type)
int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct gfs2_alloc *al = ip->i_alloc;
+ struct gfs2_qadata *qa = ip->i_qadata;
struct gfs2_quota_data *qd;
s64 value;
unsigned int x;
@@ -1060,8 +1050,8 @@ int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid)
if (sdp->sd_args.ar_quota != GFS2_QUOTA_ON)
return 0;

- for (x = 0; x < al->al_qd_num; x++) {
- qd = al->al_qd[x];
+ for (x = 0; x < qa->qa_qd_num; x++) {
+ qd = qa->qa_qd[x];

if (!((qd->qd_id == uid && test_bit(QDF_USER, &qd->qd_flags)) ||
(qd->qd_id == gid && !test_bit(QDF_USER, &qd->qd_flags))))
@@ -1099,7 +1089,7 @@ int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid)
void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
u32 uid, u32 gid)
{
- struct gfs2_alloc *al = ip->i_alloc;
+ struct gfs2_qadata *qa = ip->i_qadata;
struct gfs2_quota_data *qd;
unsigned int x;

@@ -1108,8 +1098,8 @@ void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
if (ip->i_diskflags & GFS2_DIF_SYSTEM)
return;

- for (x = 0; x < al->al_qd_num; x++) {
- qd = al->al_qd[x];
+ for (x = 0; x < qa->qa_qd_num; x++) {
+ qd = qa->qa_qd[x];

if ((qd->qd_id == uid && test_bit(QDF_USER, &qd->qd_flags)) ||
(qd->qd_id == gid && !test_bit(QDF_USER, &qd->qd_flags))) {
@@ -1529,7 +1519,6 @@ static int gfs2_set_dqblk(struct super_block *sb, int type, qid_t id,
unsigned int data_blocks, ind_blocks;
unsigned int blocks = 0;
int alloc_required;
- struct gfs2_alloc *al;
loff_t offset;
int error;

@@ -1594,15 +1583,12 @@ static int gfs2_set_dqblk(struct super_block *sb, int type, qid_t id,
if (gfs2_is_stuffed(ip))
alloc_required = 1;
if (alloc_required) {
- al = gfs2_alloc_get(ip);
- if (al == NULL)
- goto out_i;
gfs2_write_calc_reserv(ip, sizeof(struct gfs2_quota),
&data_blocks, &ind_blocks);
- blocks = al->al_requested = 1 + data_blocks + ind_blocks;
- error = gfs2_inplace_reserve(ip);
+ blocks = 1 + data_blocks + ind_blocks;
+ error = gfs2_inplace_reserve(ip, blocks);
if (error)
- goto out_alloc;
+ goto out_i;
blocks += gfs2_rg_blocks(ip);
}

@@ -1617,11 +1603,8 @@ static int gfs2_set_dqblk(struct super_block *sb, int type, qid_t id,

gfs2_trans_end(sdp);
out_release:
- if (alloc_required) {
+ if (alloc_required)
gfs2_inplace_release(ip);
-out_alloc:
- gfs2_alloc_put(ip);
- }
out_i:
gfs2_glock_dq_uninit(&i_gh);
out_q:
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 6b6cc09..f6e05d6 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -860,22 +860,36 @@ fail:
}

/**
- * gfs2_alloc_get - get the struct gfs2_alloc structure for an inode
+ * gfs2_qadata_get - get the struct gfs2_qadata structure for an inode
* @ip: the incore GFS2 inode structure
*
- * Returns: the struct gfs2_alloc
+ * Returns: the struct gfs2_qadata
*/

-struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip)
+struct gfs2_qadata *gfs2_qadata_get(struct gfs2_inode *ip)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
int error;
- BUG_ON(ip->i_alloc != NULL);
- ip->i_alloc = kzalloc(sizeof(struct gfs2_alloc), GFP_NOFS);
+ BUG_ON(ip->i_qadata != NULL);
+ ip->i_qadata = kzalloc(sizeof(struct gfs2_qadata), GFP_NOFS);
error = gfs2_rindex_update(sdp);
if (error)
fs_warn(sdp, "rindex update returns %d\n", error);
- return ip->i_alloc;
+ return ip->i_qadata;
+}
+
+/**
+ * gfs2_blkrsv_get - get the struct gfs2_blkreserv structure for an inode
+ * @ip: the incore GFS2 inode structure
+ *
+ * Returns: the struct gfs2_qadata
+ */
+
+static struct gfs2_blkreserv *gfs2_blkrsv_get(struct gfs2_inode *ip)
+{
+ BUG_ON(ip->i_res != NULL);
+ ip->i_res = kzalloc(sizeof(struct gfs2_blkreserv), GFP_NOFS);
+ return ip->i_res;
}

/**
@@ -890,11 +904,11 @@ struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip)

static int try_rgrp_fit(const struct gfs2_rgrpd *rgd, const struct gfs2_inode *ip)
{
- const struct gfs2_alloc *al = ip->i_alloc;
+ const struct gfs2_blkreserv *rs = ip->i_res;

if (rgd->rd_flags & (GFS2_RGF_NOALLOC | GFS2_RDF_ERROR))
return 0;
- if (rgd->rd_free_clone >= al->al_requested)
+ if (rgd->rd_free_clone >= rs->rs_requested)
return 1;
return 0;
}
@@ -982,7 +996,7 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_rgrpd *rgd, *begin = NULL;
- struct gfs2_alloc *al = ip->i_alloc;
+ struct gfs2_blkreserv *rs = ip->i_res;
int error, rg_locked, flags = LM_FLAG_TRY;
int loops = 0;

@@ -1002,7 +1016,7 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked)
error = 0;
} else {
error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE,
- flags, &al->al_rgd_gh);
+ flags, &rs->rs_rgd_gh);
}
switch (error) {
case 0:
@@ -1013,7 +1027,7 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked)
if (rgd->rd_flags & GFS2_RDF_CHECK)
try_rgrp_unlink(rgd, last_unlinked, ip->i_no_addr);
if (!rg_locked)
- gfs2_glock_dq_uninit(&al->al_rgd_gh);
+ gfs2_glock_dq_uninit(&rs->rs_rgd_gh);
/* fall through */
case GLR_TRYFAILED:
rgd = gfs2_rgrpd_get_next(rgd);
@@ -1030,6 +1044,13 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked)
return -ENOSPC;
}

+static void gfs2_blkrsv_put(struct gfs2_inode *ip)
+{
+ BUG_ON(ip->i_res == NULL);
+ kfree(ip->i_res);
+ ip->i_res = NULL;
+}
+
/**
* gfs2_inplace_reserve - Reserve space in the filesystem
* @ip: the inode to reserve space for
@@ -1037,16 +1058,23 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked)
* Returns: errno
*/

-int gfs2_inplace_reserve(struct gfs2_inode *ip)
+int gfs2_inplace_reserve(struct gfs2_inode *ip, u32 requested)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct gfs2_alloc *al = ip->i_alloc;
+ struct gfs2_blkreserv *rs;
int error = 0;
u64 last_unlinked = NO_BLOCK;
int tries = 0;

- if (gfs2_assert_warn(sdp, al->al_requested))
- return -EINVAL;
+ rs = gfs2_blkrsv_get(ip);
+ if (!rs)
+ return -ENOMEM;
+
+ rs->rs_requested = requested;
+ if (gfs2_assert_warn(sdp, requested)) {
+ error = -EINVAL;
+ goto out;
+ }

do {
error = get_local_rgrp(ip, &last_unlinked);
@@ -1063,6 +1091,9 @@ int gfs2_inplace_reserve(struct gfs2_inode *ip)
gfs2_log_flush(sdp, NULL);
} while (tries++ < 3);

+out:
+ if (error)
+ gfs2_blkrsv_put(ip);
return error;
}

@@ -1075,10 +1106,11 @@ int gfs2_inplace_reserve(struct gfs2_inode *ip)

void gfs2_inplace_release(struct gfs2_inode *ip)
{
- struct gfs2_alloc *al = ip->i_alloc;
+ struct gfs2_blkreserv *rs = ip->i_res;

- if (al->al_rgd_gh.gh_gl)
- gfs2_glock_dq_uninit(&al->al_rgd_gh);
+ gfs2_blkrsv_put(ip);
+ if (rs->rs_rgd_gh.gh_gl)
+ gfs2_glock_dq_uninit(&rs->rs_rgd_gh);
}

/**
@@ -1338,7 +1370,6 @@ int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *ndata,
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct buffer_head *dibh;
- struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_rgrpd *rgd;
u32 goal, extlen, blk; /* block, within the rgrp scope */
u64 block; /* block, within the file system scope */
@@ -1348,7 +1379,7 @@ int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *ndata,
/* Only happens if there is a bug in gfs2, return something distinctive
* to ensure that it is noticed.
*/
- if (al == NULL)
+ if (ip->i_res == NULL)
return -ECANCELED;

rgd = ip->i_rgd;
diff --git a/fs/gfs2/rgrp.h b/fs/gfs2/rgrp.h
index b3b61b8..ceec910 100644
--- a/fs/gfs2/rgrp.h
+++ b/fs/gfs2/rgrp.h
@@ -28,15 +28,15 @@ extern void gfs2_free_clones(struct gfs2_rgrpd *rgd);
extern int gfs2_rgrp_go_lock(struct gfs2_holder *gh);
extern void gfs2_rgrp_go_unlock(struct gfs2_holder *gh);

-extern struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip);
-static inline void gfs2_alloc_put(struct gfs2_inode *ip)
+extern struct gfs2_qadata *gfs2_qadata_get(struct gfs2_inode *ip);
+static inline void gfs2_qadata_put(struct gfs2_inode *ip)
{
- BUG_ON(ip->i_alloc == NULL);
- kfree(ip->i_alloc);
- ip->i_alloc = NULL;
+ BUG_ON(ip->i_qadata == NULL);
+ kfree(ip->i_qadata);
+ ip->i_qadata = NULL;
}

-extern int gfs2_inplace_reserve(struct gfs2_inode *ip);
+extern int gfs2_inplace_reserve(struct gfs2_inode *ip, u32 requested);
extern void gfs2_inplace_release(struct gfs2_inode *ip);

extern int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *n,
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index 71e4209..69eb568 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -1399,8 +1399,9 @@ static void gfs2_final_release_pages(struct gfs2_inode *ip)
static int gfs2_dinode_dealloc(struct gfs2_inode *ip)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct gfs2_alloc *al;
+ struct gfs2_qadata *qa;
struct gfs2_rgrpd *rgd;
+ struct gfs2_holder gh;
int error;

if (gfs2_get_inode_blocks(&ip->i_inode) != 1) {
@@ -1408,8 +1409,8 @@ static int gfs2_dinode_dealloc(struct gfs2_inode *ip)
return -EIO;
}

- al = gfs2_alloc_get(ip);
- if (!al)
+ qa = gfs2_qadata_get(ip);
+ if (!qa)
return -ENOMEM;

error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
@@ -1423,8 +1424,7 @@ static int gfs2_dinode_dealloc(struct gfs2_inode *ip)
goto out_qs;
}

- error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0,
- &al->al_rgd_gh);
+ error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, &gh);
if (error)
goto out_qs;

@@ -1440,11 +1440,11 @@ static int gfs2_dinode_dealloc(struct gfs2_inode *ip)
gfs2_trans_end(sdp);

out_rg_gunlock:
- gfs2_glock_dq_uninit(&al->al_rgd_gh);
+ gfs2_glock_dq_uninit(&gh);
out_qs:
gfs2_quota_unhold(ip);
out:
- gfs2_alloc_put(ip);
+ gfs2_qadata_put(ip);
return error;
}

diff --git a/fs/gfs2/trans.h b/fs/gfs2/trans.h
index f8f101e..125d457 100644
--- a/fs/gfs2/trans.h
+++ b/fs/gfs2/trans.h
@@ -30,9 +30,9 @@ struct gfs2_glock;
* block, or all of the blocks in the rg, whichever is smaller */
static inline unsigned int gfs2_rg_blocks(const struct gfs2_inode *ip)
{
- const struct gfs2_alloc *al = ip->i_alloc;
- if (al->al_requested < ip->i_rgd->rd_length)
- return al->al_requested + 1;
+ const struct gfs2_blkreserv *rs = ip->i_res;
+ if (rs->rs_requested < ip->i_rgd->rd_length)
+ return rs->rs_requested + 1;
return ip->i_rgd->rd_length;
}

diff --git a/fs/gfs2/xattr.c b/fs/gfs2/xattr.c
index ef74e159..e963659 100644
--- a/fs/gfs2/xattr.c
+++ b/fs/gfs2/xattr.c
@@ -321,11 +321,11 @@ static int ea_remove_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh,
struct gfs2_ea_header *ea,
struct gfs2_ea_header *prev, int leave)
{
- struct gfs2_alloc *al;
+ struct gfs2_qadata *qa;
int error;

- al = gfs2_alloc_get(ip);
- if (!al)
+ qa = gfs2_qadata_get(ip);
+ if (!qa)
return -ENOMEM;

error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
@@ -336,7 +336,7 @@ static int ea_remove_unstuffed(struct gfs2_inode *ip, struct buffer_head *bh,

gfs2_quota_unhold(ip);
out_alloc:
- gfs2_alloc_put(ip);
+ gfs2_qadata_put(ip);
return error;
}

@@ -709,21 +709,19 @@ static int ea_alloc_skeleton(struct gfs2_inode *ip, struct gfs2_ea_request *er,
unsigned int blks,
ea_skeleton_call_t skeleton_call, void *private)
{
- struct gfs2_alloc *al;
+ struct gfs2_qadata *qa;
struct buffer_head *dibh;
int error;

- al = gfs2_alloc_get(ip);
- if (!al)
+ qa = gfs2_qadata_get(ip);
+ if (!qa)
return -ENOMEM;

error = gfs2_quota_lock_check(ip);
if (error)
goto out;

- al->al_requested = blks;
-
- error = gfs2_inplace_reserve(ip);
+ error = gfs2_inplace_reserve(ip, blks);
if (error)
goto out_gunlock_q;

@@ -752,7 +750,7 @@ out_ipres:
out_gunlock_q:
gfs2_quota_unlock(ip);
out:
- gfs2_alloc_put(ip);
+ gfs2_qadata_put(ip);
return error;
}

@@ -1436,9 +1434,9 @@ out:
static int ea_dealloc_block(struct gfs2_inode *ip)
{
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
- struct gfs2_alloc *al = ip->i_alloc;
struct gfs2_rgrpd *rgd;
struct buffer_head *dibh;
+ struct gfs2_holder gh;
int error;

rgd = gfs2_blk2rgrpd(sdp, ip->i_eattr);
@@ -1447,8 +1445,7 @@ static int ea_dealloc_block(struct gfs2_inode *ip)
return -EIO;
}

- error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0,
- &al->al_rgd_gh);
+ error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, &gh);
if (error)
return error;

@@ -1472,7 +1469,7 @@ static int ea_dealloc_block(struct gfs2_inode *ip)
gfs2_trans_end(sdp);

out_gunlock:
- gfs2_glock_dq_uninit(&al->al_rgd_gh);
+ gfs2_glock_dq_uninit(&gh);
return error;
}

@@ -1485,11 +1482,11 @@ out_gunlock:

int gfs2_ea_dealloc(struct gfs2_inode *ip)
{
- struct gfs2_alloc *al;
+ struct gfs2_qadata *qa;
int error;

- al = gfs2_alloc_get(ip);
- if (!al)
+ qa = gfs2_qadata_get(ip);
+ if (!qa)
return -ENOMEM;

error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
@@ -1511,7 +1508,7 @@ int gfs2_ea_dealloc(struct gfs2_inode *ip)
out_quota:
gfs2_quota_unhold(ip);
out_alloc:
- gfs2_alloc_put(ip);
+ gfs2_qadata_put(ip);
return error;
}

--
1.7.4

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