diff options
| author | Jun Nie | 2023-01-03 09:45:16 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-03-10 09:34:20 +0100 |
| commit | 8b6d06b3be7648b3b0f428558293ddf6e2cb94bf (patch) | |
| tree | 6ed6d698ec709ac20c93f2173ba5730c14a4ab5d /fs/ext4/acl.c | |
| parent | 45b99c35f812593ae57c70fd8ac3dfb494361f3f (diff) | |
ext4: optimize ea_inode block expansion
commit 1e9d62d252812575ded7c620d8fc67c32ff06c16 upstream.
Copy ea data from inode entry when expanding ea block if possible.
Then remove the ea entry if expansion success. Thus memcpy to a
temporary buffer may be avoided.
If the expansion fails, we do not need to recovery the removed ea
entry neither in this way.
Reported-by: syzbot+2dacb8f015bf1420155f@syzkaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?id=3613786cb88c93aa1c6a279b1df6a7b201347d08
Link: https://lore.kernel.org/r/20230103014517.495275-2-jun.nie@linaro.org
Cc: stable@kernel.org
Signed-off-by: Jun Nie <jun.nie@linaro.org>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/ext4/acl.c')
0 files changed, 0 insertions, 0 deletions