ext2: only flush DIRSYNC directories on every change

Every change of an ext2 directory is written to disk before the system call
returns, whether the directory is DIRSYNC or not: its pages with
filemap_write_and_wait() and its inode with sync_inode_metadata().

Writes which reach the device for 2000 files, and 200 directories, in a
directory without DIRSYNC, with the flusher turned off:

            create   rename   unlink   mkdir
    before    4000     8000     4000     800
    after        0        0        0       0

In a directory with chattr +D the numbers are those of "before", before and
after.

commit bc943f4872a7 ("ext2: Don't flush page immediately for DIRSYNC
directories") moved the flush from ext2_commit_chunk() to the new
ext2_handle_dirsync().  The IS_DIRSYNC() check which was around it didn't
move along.

Fix by putting the check into ext2_handle_dirsync().

Fixes: bc943f4872a7 ("ext2: Don't flush page immediately for DIRSYNC directories")
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Link: https://patch.msgid.link/20261027-b4-ext2-dirsync-v1-1-3dcd012d518d@toxicpanda.com
Signed-off-by: Jan Kara <jack@suse.cz>

0 files changed, 0 insertions, 0 deletions