[PATCH 16/79] btrfs: switch to new ctime accessors

From: Jeff Layton
Date: Wed Jun 21 2023 - 10:49:43 EST

In later patches, we're going to change how the ctime.tv_nsec field is
utilized. Switch to using accessor functions instead of raw accesses of
inode->i_ctime.

Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
---
fs/btrfs/delayed-inode.c | 10 +++---
fs/btrfs/file.c | 24 +++++----------
fs/btrfs/inode.c | 66 ++++++++++++++++------------------------
fs/btrfs/ioctl.c | 2 +-
fs/btrfs/reflink.c | 7 ++---
fs/btrfs/transaction.c | 3 +-
fs/btrfs/tree-log.c | 4 +--
fs/btrfs/xattr.c | 4 +--
8 files changed, 48 insertions(+), 72 deletions(-)

diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
index c0a6a1784697..ae493a4dc206 100644
--- a/fs/btrfs/delayed-inode.c
+++ b/fs/btrfs/delayed-inode.c
@@ -1808,9 +1808,9 @@ static void fill_stack_inode_item(struct btrfs_trans_handle *trans,
inode->i_mtime.tv_nsec);

btrfs_set_stack_timespec_sec(&inode_item->ctime,
- inode->i_ctime.tv_sec);
+ inode_ctime_peek(inode).tv_sec);
btrfs_set_stack_timespec_nsec(&inode_item->ctime,
- inode->i_ctime.tv_nsec);
+ inode_ctime_peek(inode).tv_nsec);

btrfs_set_stack_timespec_sec(&inode_item->otime,
BTRFS_I(inode)->i_otime.tv_sec);
@@ -1861,8 +1861,10 @@ int btrfs_fill_inode(struct inode *inode, u32 *rdev)
inode->i_mtime.tv_sec = btrfs_stack_timespec_sec(&inode_item->mtime);
inode->i_mtime.tv_nsec = btrfs_stack_timespec_nsec(&inode_item->mtime);

- inode->i_ctime.tv_sec = btrfs_stack_timespec_sec(&inode_item->ctime);
- inode->i_ctime.tv_nsec = btrfs_stack_timespec_nsec(&inode_item->ctime);
+ inode_ctime_set_sec(inode,
+ btrfs_stack_timespec_sec(&inode_item->ctime));
+ inode_ctime_set_nsec(inode,
+ btrfs_stack_timespec_nsec(&inode_item->ctime));

BTRFS_I(inode)->i_otime.tv_sec =
btrfs_stack_timespec_sec(&inode_item->otime);
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index fd03e689a6be..b4082b322b41 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1108,17 +1108,10 @@ void btrfs_check_nocow_unlock(struct btrfs_inode *inode)

static void update_time_for_write(struct inode *inode)
{
- struct timespec64 now;
-
if (IS_NOCMTIME(inode))
return;

- now = current_time(inode);
- if (!timespec64_equal(&inode->i_mtime, &now))
- inode->i_mtime = now;
-
- if (!timespec64_equal(&inode->i_ctime, &now))
- inode->i_ctime = now;
+ inode->i_mtime = inode_ctime_set_current(inode);

if (IS_I_VERSION(inode))
inode_inc_iversion(inode);
@@ -2460,8 +2453,9 @@ int btrfs_replace_file_extents(struct btrfs_inode *inode,
inode_inc_iversion(&inode->vfs_inode);

if (!extent_info || extent_info->update_times) {
- inode->vfs_inode.i_mtime = current_time(&inode->vfs_inode);
- inode->vfs_inode.i_ctime = inode->vfs_inode.i_mtime;
+ struct inode *vinode = &inode->vfs_inode;
+
+ vinode->i_mtime = inode_ctime_set_current(vinode);
}

ret = btrfs_update_inode(trans, root, inode);
@@ -2703,8 +2697,7 @@ static int btrfs_punch_hole(struct file *file, loff_t offset, loff_t len)

ASSERT(trans != NULL);
inode_inc_iversion(inode);
- inode->i_mtime = current_time(inode);
- inode->i_ctime = inode->i_mtime;
+ inode->i_mtime = inode_ctime_set_current(inode);
ret = btrfs_update_inode(trans, root, BTRFS_I(inode));
updated_inode = true;
btrfs_end_transaction(trans);
@@ -2721,11 +2714,8 @@ static int btrfs_punch_hole(struct file *file, loff_t offset, loff_t len)
* for detecting, at fsync time, if the inode isn't yet in the
* log tree or it's there but not up to date.
*/
- struct timespec64 now = current_time(inode);
-
inode_inc_iversion(inode);
- inode->i_mtime = now;
- inode->i_ctime = now;
+ inode->i_mtime = inode_ctime_set_current(inode);
trans = btrfs_start_transaction(root, 1);
if (IS_ERR(trans)) {
ret = PTR_ERR(trans);
@@ -2796,7 +2786,7 @@ static int btrfs_fallocate_update_isize(struct inode *inode,
if (IS_ERR(trans))
return PTR_ERR(trans);

- inode->i_ctime = current_time(inode);
+ inode_ctime_set_current(inode);
i_size_write(inode, end);
btrfs_inode_safe_disk_i_size_write(BTRFS_I(inode), 0);
ret = btrfs_update_inode(trans, root, BTRFS_I(inode));
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 601fdc956484..4bbb6c6a7516 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -3901,8 +3901,10 @@ static int btrfs_read_locked_inode(struct inode *inode,
inode->i_mtime.tv_sec = btrfs_timespec_sec(leaf, &inode_item->mtime);
inode->i_mtime.tv_nsec = btrfs_timespec_nsec(leaf, &inode_item->mtime);

- inode->i_ctime.tv_sec = btrfs_timespec_sec(leaf, &inode_item->ctime);
- inode->i_ctime.tv_nsec = btrfs_timespec_nsec(leaf, &inode_item->ctime);
+ inode_ctime_set_sec(inode,
+ btrfs_timespec_sec(leaf, &inode_item->ctime));
+ inode_ctime_set_nsec(inode,
+ btrfs_timespec_nsec(leaf, &inode_item->ctime));

BTRFS_I(inode)->i_otime.tv_sec =
btrfs_timespec_sec(leaf, &inode_item->otime);
@@ -4073,9 +4075,9 @@ static void fill_inode_item(struct btrfs_trans_handle *trans,
inode->i_mtime.tv_nsec);

btrfs_set_token_timespec_sec(&token, &item->ctime,
- inode->i_ctime.tv_sec);
+ inode_ctime_peek(inode).tv_sec);
btrfs_set_token_timespec_nsec(&token, &item->ctime,
- inode->i_ctime.tv_nsec);
+ inode_ctime_peek(inode).tv_nsec);

btrfs_set_token_timespec_sec(&token, &item->otime,
BTRFS_I(inode)->i_otime.tv_sec);
@@ -4273,9 +4275,8 @@ static int __btrfs_unlink_inode(struct btrfs_trans_handle *trans,
btrfs_i_size_write(dir, dir->vfs_inode.i_size - name->len * 2);
inode_inc_iversion(&inode->vfs_inode);
inode_inc_iversion(&dir->vfs_inode);
- inode->vfs_inode.i_ctime = current_time(&inode->vfs_inode);
- dir->vfs_inode.i_mtime = inode->vfs_inode.i_ctime;
- dir->vfs_inode.i_ctime = inode->vfs_inode.i_ctime;
+ inode_ctime_set_current(&inode->vfs_inode);
+ dir->vfs_inode.i_mtime = inode_ctime_set_current(&dir->vfs_inode);
ret = btrfs_update_inode(trans, root, dir);
out:
return ret;
@@ -4448,8 +4449,7 @@ static int btrfs_unlink_subvol(struct btrfs_trans_handle *trans,

btrfs_i_size_write(dir, dir->vfs_inode.i_size - fname.disk_name.len * 2);
inode_inc_iversion(&dir->vfs_inode);
- dir->vfs_inode.i_mtime = current_time(&dir->vfs_inode);
- dir->vfs_inode.i_ctime = dir->vfs_inode.i_mtime;
+ dir->vfs_inode.i_mtime = inode_ctime_set_current(&dir->vfs_inode);
ret = btrfs_update_inode_fallback(trans, root, dir);
if (ret)
btrfs_abort_transaction(trans, ret);
@@ -5090,10 +5090,8 @@ static int btrfs_setsize(struct inode *inode, struct iattr *attr)
*/
if (newsize != oldsize) {
inode_inc_iversion(inode);
- if (!(mask & (ATTR_CTIME | ATTR_MTIME))) {
- inode->i_mtime = current_time(inode);
- inode->i_ctime = inode->i_mtime;
- }
+ if (!(mask & (ATTR_CTIME | ATTR_MTIME)))
+ inode->i_mtime = inode_ctime_set_current(inode);
}

if (newsize > oldsize) {
@@ -5736,9 +5734,7 @@ static struct inode *new_simple_dir(struct super_block *s,
inode->i_opflags &= ~IOP_XATTR;
inode->i_fop = &simple_dir_operations;
inode->i_mode = S_IFDIR | S_IRUGO | S_IWUSR | S_IXUGO;
- inode->i_mtime = current_time(inode);
- inode->i_atime = inode->i_mtime;
- inode->i_ctime = inode->i_mtime;
+ inode->i_atime = inode->i_mtime = inode_ctime_set_current(inode);
BTRFS_I(inode)->i_otime = inode->i_mtime;

return inode;
@@ -6075,7 +6071,7 @@ static int btrfs_update_time(struct inode *inode, struct timespec64 *now,
if (flags & S_VERSION)
dirty |= inode_maybe_inc_iversion(inode, dirty);
if (flags & S_CTIME)
- inode->i_ctime = *now;
+ inode_ctime_set(inode, *now);
if (flags & S_MTIME)
inode->i_mtime = *now;
if (flags & S_ATIME)
@@ -6378,9 +6374,7 @@ int btrfs_create_new_inode(struct btrfs_trans_handle *trans,
goto discard;
}

- inode->i_mtime = current_time(inode);
- inode->i_atime = inode->i_mtime;
- inode->i_ctime = inode->i_mtime;
+ inode->i_atime = inode->i_mtime = inode_ctime_set_current(inode);
BTRFS_I(inode)->i_otime = inode->i_mtime;

/*
@@ -6545,12 +6539,9 @@ int btrfs_add_link(struct btrfs_trans_handle *trans,
* log replay procedure is responsible for setting them to their correct
* values (the ones it had when the fsync was done).
*/
- if (!test_bit(BTRFS_FS_LOG_RECOVERING, &root->fs_info->flags)) {
- struct timespec64 now = current_time(&parent_inode->vfs_inode);
+ if (!test_bit(BTRFS_FS_LOG_RECOVERING, &root->fs_info->flags))
+ parent_inode->vfs_inode.i_mtime = inode_ctime_set_current(&parent_inode->vfs_inode);

- parent_inode->vfs_inode.i_mtime = now;
- parent_inode->vfs_inode.i_ctime = now;
- }
ret = btrfs_update_inode(trans, root, parent_inode);
if (ret)
btrfs_abort_transaction(trans, ret);
@@ -6690,7 +6681,7 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
BTRFS_I(inode)->dir_index = 0ULL;
inc_nlink(inode);
inode_inc_iversion(inode);
- inode->i_ctime = current_time(inode);
+ inode_ctime_set_current(inode);
ihold(inode);
set_bit(BTRFS_INODE_COPY_EVERYTHING, &BTRFS_I(inode)->runtime_flags);

@@ -8778,7 +8769,6 @@ static int btrfs_rename_exchange(struct inode *old_dir,
struct btrfs_root *dest = BTRFS_I(new_dir)->root;
struct inode *new_inode = new_dentry->d_inode;
struct inode *old_inode = old_dentry->d_inode;
- struct timespec64 ctime = current_time(old_inode);
struct btrfs_rename_ctx old_rename_ctx;
struct btrfs_rename_ctx new_rename_ctx;
u64 old_ino = btrfs_ino(BTRFS_I(old_inode));
@@ -8909,12 +8899,10 @@ static int btrfs_rename_exchange(struct inode *old_dir,
inode_inc_iversion(new_dir);
inode_inc_iversion(old_inode);
inode_inc_iversion(new_inode);
- old_dir->i_mtime = ctime;
- old_dir->i_ctime = ctime;
- new_dir->i_mtime = ctime;
- new_dir->i_ctime = ctime;
- old_inode->i_ctime = ctime;
- new_inode->i_ctime = ctime;
+ old_dir->i_mtime = inode_ctime_set_current(old_dir);
+ new_dir->i_mtime = inode_ctime_set_current(new_dir);
+ inode_ctime_set_current(old_inode);
+ inode_ctime_set_current(new_inode);

if (old_dentry->d_parent != new_dentry->d_parent) {
btrfs_record_unlink_dir(trans, BTRFS_I(old_dir),
@@ -9178,11 +9166,9 @@ static int btrfs_rename(struct mnt_idmap *idmap,
inode_inc_iversion(old_dir);
inode_inc_iversion(new_dir);
inode_inc_iversion(old_inode);
- old_dir->i_mtime = current_time(old_dir);
- old_dir->i_ctime = old_dir->i_mtime;
- new_dir->i_mtime = old_dir->i_mtime;
- new_dir->i_ctime = old_dir->i_mtime;
- old_inode->i_ctime = old_dir->i_mtime;
+ old_dir->i_mtime = inode_ctime_set_current(old_dir);
+ new_dir->i_mtime = inode_ctime_set_current(new_dir);
+ inode_ctime_set_current(old_inode);

if (old_dentry->d_parent != new_dentry->d_parent)
btrfs_record_unlink_dir(trans, BTRFS_I(old_dir),
@@ -9204,7 +9190,7 @@ static int btrfs_rename(struct mnt_idmap *idmap,

if (new_inode) {
inode_inc_iversion(new_inode);
- new_inode->i_ctime = current_time(new_inode);
+ inode_ctime_set_current(new_inode);
if (unlikely(btrfs_ino(BTRFS_I(new_inode)) ==
BTRFS_EMPTY_SUBVOL_DIR_OBJECTID)) {
ret = btrfs_unlink_subvol(trans, BTRFS_I(new_dir), new_dentry);
@@ -9744,7 +9730,7 @@ static int __btrfs_prealloc_file_range(struct inode *inode, int mode,
*alloc_hint = ins.objectid + ins.offset;

inode_inc_iversion(inode);
- inode->i_ctime = current_time(inode);
+ inode_ctime_set_current(inode);
BTRFS_I(inode)->flags |= BTRFS_INODE_PREALLOC;
if (!(mode & FALLOC_FL_KEEP_SIZE) &&
(actual_len > inode->i_size) &&
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index a895d105464b..3d50bd67ec85 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -384,7 +384,7 @@ int btrfs_fileattr_set(struct mnt_idmap *idmap,
binode->flags = binode_flags;
btrfs_sync_inode_flags_to_i_flags(inode);
inode_inc_iversion(inode);
- inode->i_ctime = current_time(inode);
+ inode_ctime_set_current(inode);
ret = btrfs_update_inode(trans, root, BTRFS_I(inode));

out_end_trans:
diff --git a/fs/btrfs/reflink.c b/fs/btrfs/reflink.c
index 0474bbe39da7..3cf4716dea46 100644
--- a/fs/btrfs/reflink.c
+++ b/fs/btrfs/reflink.c
@@ -29,10 +29,9 @@ static int clone_finish_inode_update(struct btrfs_trans_handle *trans,
int ret;

inode_inc_iversion(inode);
- if (!no_time_update) {
- inode->i_mtime = current_time(inode);
- inode->i_ctime = inode->i_mtime;
- }
+ if (!no_time_update)
+ inode->i_mtime = inode_ctime_set_current(inode);
+
/*
* We round up to the block size at eof when determining which
* extents to clone above, but shouldn't round up the file size.
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index e7cfc992e02a..138f919646e2 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -1831,8 +1831,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,

btrfs_i_size_write(BTRFS_I(parent_inode), parent_inode->i_size +
fname.disk_name.len * 2);
- parent_inode->i_mtime = current_time(parent_inode);
- parent_inode->i_ctime = parent_inode->i_mtime;
+ parent_inode->i_mtime = inode_ctime_set_current(parent_inode);
ret = btrfs_update_inode_fallback(trans, parent_root, BTRFS_I(parent_inode));
if (ret) {
btrfs_abort_transaction(trans, ret);
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 365a1cc0a3c3..c862d1450365 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -4148,9 +4148,9 @@ static void fill_inode_item(struct btrfs_trans_handle *trans,
inode->i_mtime.tv_nsec);

btrfs_set_token_timespec_sec(&token, &item->ctime,
- inode->i_ctime.tv_sec);
+ inode_ctime_peek(inode).tv_sec);
btrfs_set_token_timespec_nsec(&token, &item->ctime,
- inode->i_ctime.tv_nsec);
+ inode_ctime_peek(inode).tv_nsec);

/*
* We do not need to set the nbytes field, in fact during a fast fsync
diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
index fc4b20c2688a..a2d331436963 100644
--- a/fs/btrfs/xattr.c
+++ b/fs/btrfs/xattr.c
@@ -264,7 +264,7 @@ int btrfs_setxattr_trans(struct inode *inode, const char *name,
goto out;

inode_inc_iversion(inode);
- inode->i_ctime = current_time(inode);
+ inode_ctime_set_current(inode);
ret = btrfs_update_inode(trans, root, BTRFS_I(inode));
if (ret)
btrfs_abort_transaction(trans, ret);
@@ -407,7 +407,7 @@ static int btrfs_xattr_handler_set_prop(const struct xattr_handler *handler,
ret = btrfs_set_prop(trans, inode, name, value, size, flags);
if (!ret) {
inode_inc_iversion(inode);
- inode->i_ctime = current_time(inode);
+ inode_ctime_set_current(inode);
ret = btrfs_update_inode(trans, root, BTRFS_I(inode));
if (ret)
btrfs_abort_transaction(trans, ret);
--
2.41.0