6.6-stable review patch. If anyone has any objections, please let me know.
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From: David Sterba dsterba@suse.com
[ Upstream commit c6e8f898f56fae2cb5bc4396bec480f23cd8b066 ]
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 Stable-dep-of: 1ef94169db09 ("btrfs: populate otime when logging an inode item") Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/btrfs/btrfs_inode.h | 3 ++- fs/btrfs/delayed-inode.c | 12 ++++-------- fs/btrfs/inode.c | 26 ++++++++++++-------------- 3 files changed, 18 insertions(+), 23 deletions(-)
--- a/fs/btrfs/btrfs_inode.h +++ b/fs/btrfs/btrfs_inode.h @@ -251,7 +251,8 @@ 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; --- a/fs/btrfs/delayed-inode.c +++ b/fs/btrfs/delayed-inode.c @@ -1849,10 +1849,8 @@ static void fill_stack_inode_item(struct 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) @@ -1901,10 +1899,8 @@ int btrfs_fill_inode(struct inode *inode 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; --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -3785,10 +3785,8 @@ static int btrfs_read_locked_inode(struc 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); @@ -3958,10 +3956,8 @@ static void fill_inode_item(struct btrfs 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, @@ -5644,7 +5640,8 @@ static struct inode *new_simple_dir(stru 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;
@@ -6321,7 +6318,8 @@ int btrfs_create_new_inode(struct btrfs_
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 @@ -8550,8 +8548,8 @@ struct inode *btrfs_alloc_inode(struct s
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); @@ -8703,8 +8701,8 @@ static int btrfs_getattr(struct mnt_idma 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)