diff options
author | David Sterba <dsterba@suse.com> | 2023-09-29 22:18:44 +0300 |
---|---|---|
committer | David Sterba <dsterba@suse.com> | 2023-10-12 17:44:19 +0300 |
commit | c6e8f898f56fae2cb5bc4396bec480f23cd8b066 (patch) | |
tree | a4123e4b24487e4358bedb4cd63746d52bfcae9e | |
parent | cc687c2ef43db15d5ad9a57d93c1b348726feb97 (diff) | |
download | linux-c6e8f898f56fae2cb5bc4396bec480f23cd8b066.tar.xz |
btrfs: open code timespec64 in struct btrfs_inode
The type of timespec64::tv_nsec is 'unsigned long', while we have only
u32 for on-disk and in-memory. This wastes a few bytes in btrfs_inode.
Add separate members for sec and nsec with the corresponding type width.
This creates a 4 byte hole in btrfs_inode which can be utilized in the
future.
Signed-off-by: David Sterba <dsterba@suse.com>
-rw-r--r-- | fs/btrfs/btrfs_inode.h | 3 | ||||
-rw-r--r-- | fs/btrfs/delayed-inode.c | 12 | ||||
-rw-r--r-- | fs/btrfs/inode.c | 26 |
3 files changed, 18 insertions, 23 deletions
diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h index bebb5921b922..5572ae52444e 100644 --- a/fs/btrfs/btrfs_inode.h +++ b/fs/btrfs/btrfs_inode.h @@ -253,7 +253,8 @@ struct btrfs_inode { struct btrfs_delayed_node *delayed_node; /* File creation time. */ - struct timespec64 i_otime; + u64 i_otime_sec; + u32 i_otime_nsec; /* Hook into fs_info->delayed_iputs */ struct list_head delayed_iput; diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c index 4f364e242341..c640f87038a6 100644 --- a/fs/btrfs/delayed-inode.c +++ b/fs/btrfs/delayed-inode.c @@ -1847,10 +1847,8 @@ static void fill_stack_inode_item(struct btrfs_trans_handle *trans, btrfs_set_stack_timespec_nsec(&inode_item->ctime, inode_get_ctime(inode).tv_nsec); - btrfs_set_stack_timespec_sec(&inode_item->otime, - BTRFS_I(inode)->i_otime.tv_sec); - btrfs_set_stack_timespec_nsec(&inode_item->otime, - BTRFS_I(inode)->i_otime.tv_nsec); + btrfs_set_stack_timespec_sec(&inode_item->otime, BTRFS_I(inode)->i_otime_sec); + btrfs_set_stack_timespec_nsec(&inode_item->otime, BTRFS_I(inode)->i_otime_nsec); } int btrfs_fill_inode(struct inode *inode, u32 *rdev) @@ -1899,10 +1897,8 @@ int btrfs_fill_inode(struct inode *inode, u32 *rdev) inode_set_ctime(inode, btrfs_stack_timespec_sec(&inode_item->ctime), btrfs_stack_timespec_nsec(&inode_item->ctime)); - BTRFS_I(inode)->i_otime.tv_sec = - btrfs_stack_timespec_sec(&inode_item->otime); - BTRFS_I(inode)->i_otime.tv_nsec = - btrfs_stack_timespec_nsec(&inode_item->otime); + BTRFS_I(inode)->i_otime_sec = btrfs_stack_timespec_sec(&inode_item->otime); + BTRFS_I(inode)->i_otime_nsec = btrfs_stack_timespec_nsec(&inode_item->otime); inode->i_generation = BTRFS_I(inode)->generation; BTRFS_I(inode)->index_cnt = (u64)-1; diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 6f67ac612c6e..b388505c91cc 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -3771,10 +3771,8 @@ static int btrfs_read_locked_inode(struct inode *inode, inode_set_ctime(inode, btrfs_timespec_sec(leaf, &inode_item->ctime), btrfs_timespec_nsec(leaf, &inode_item->ctime)); - BTRFS_I(inode)->i_otime.tv_sec = - btrfs_timespec_sec(leaf, &inode_item->otime); - BTRFS_I(inode)->i_otime.tv_nsec = - btrfs_timespec_nsec(leaf, &inode_item->otime); + BTRFS_I(inode)->i_otime_sec = btrfs_timespec_sec(leaf, &inode_item->otime); + BTRFS_I(inode)->i_otime_nsec = btrfs_timespec_nsec(leaf, &inode_item->otime); inode_set_bytes(inode, btrfs_inode_nbytes(leaf, inode_item)); BTRFS_I(inode)->generation = btrfs_inode_generation(leaf, inode_item); @@ -3944,10 +3942,8 @@ static void fill_inode_item(struct btrfs_trans_handle *trans, btrfs_set_token_timespec_nsec(&token, &item->ctime, inode_get_ctime(inode).tv_nsec); - btrfs_set_token_timespec_sec(&token, &item->otime, - BTRFS_I(inode)->i_otime.tv_sec); - btrfs_set_token_timespec_nsec(&token, &item->otime, - BTRFS_I(inode)->i_otime.tv_nsec); + btrfs_set_token_timespec_sec(&token, &item->otime, BTRFS_I(inode)->i_otime_sec); + btrfs_set_token_timespec_nsec(&token, &item->otime, BTRFS_I(inode)->i_otime_nsec); btrfs_set_token_inode_nbytes(&token, item, inode_get_bytes(inode)); btrfs_set_token_inode_generation(&token, item, @@ -5609,7 +5605,8 @@ static struct inode *new_simple_dir(struct inode *dir, inode->i_mode = S_IFDIR | S_IRUGO | S_IWUSR | S_IXUGO; inode->i_mtime = inode_set_ctime_current(inode); inode->i_atime = dir->i_atime; - BTRFS_I(inode)->i_otime = inode->i_mtime; + BTRFS_I(inode)->i_otime_sec = inode->i_mtime.tv_sec; + BTRFS_I(inode)->i_otime_nsec = inode->i_mtime.tv_nsec; inode->i_uid = dir->i_uid; inode->i_gid = dir->i_gid; @@ -6286,7 +6283,8 @@ int btrfs_create_new_inode(struct btrfs_trans_handle *trans, inode->i_mtime = inode_set_ctime_current(inode); inode->i_atime = inode->i_mtime; - BTRFS_I(inode)->i_otime = inode->i_mtime; + BTRFS_I(inode)->i_otime_sec = inode->i_mtime.tv_sec; + BTRFS_I(inode)->i_otime_nsec = inode->i_mtime.tv_nsec; /* * We're going to fill the inode item now, so at this point the inode @@ -8487,8 +8485,8 @@ struct inode *btrfs_alloc_inode(struct super_block *sb) ei->delayed_node = NULL; - ei->i_otime.tv_sec = 0; - ei->i_otime.tv_nsec = 0; + ei->i_otime_sec = 0; + ei->i_otime_nsec = 0; inode = &ei->vfs_inode; extent_map_tree_init(&ei->extent_tree); @@ -8642,8 +8640,8 @@ static int btrfs_getattr(struct mnt_idmap *idmap, u32 bi_ro_flags = BTRFS_I(inode)->ro_flags; stat->result_mask |= STATX_BTIME; - stat->btime.tv_sec = BTRFS_I(inode)->i_otime.tv_sec; - stat->btime.tv_nsec = BTRFS_I(inode)->i_otime.tv_nsec; + stat->btime.tv_sec = BTRFS_I(inode)->i_otime_sec; + stat->btime.tv_nsec = BTRFS_I(inode)->i_otime_nsec; if (bi_flags & BTRFS_INODE_APPEND) stat->attributes |= STATX_ATTR_APPEND; if (bi_flags & BTRFS_INODE_COMPRESS) |