This is a note to let you know that I've just added the patch titled
ext4: allow to find by goal if EXT4_MB_HINT_GOAL_ONLY is set
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ext4-allow-to-find-by-goal-if-ext4_mb_hint_goal_only.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit f10fdb183b1950f67e0427f14abc04937f01328c
Author: Kemeng Shi <shikemeng@xxxxxxxxxxxxxxx>
Date: Sat Mar 4 01:21:02 2023 +0800
ext4: allow to find by goal if EXT4_MB_HINT_GOAL_ONLY is set
[ Upstream commit 01e4ca29451760b9ac10b4cdc231c52150842643 ]
If EXT4_MB_HINT_GOAL_ONLY is set, ext4_mb_regular_allocator will only
allocate blocks from ext4_mb_find_by_goal. Allow to find by goal in
ext4_mb_find_by_goal if EXT4_MB_HINT_GOAL_ONLY is set or allocation
with EXT4_MB_HINT_GOAL_ONLY set will always fail.
EXT4_MB_HINT_GOAL_ONLY is not used at all, so the problem is not
found for now.
Signed-off-by: Kemeng Shi <shikemeng@xxxxxxxxxxxxxxx>
Reviewed-by: Ojaswin Mujoo <ojaswin@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230303172120.3800725-3-shikemeng@xxxxxxxxxxxxxxx
Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
Stable-dep-of: 5354b2af3406 ("ext4: allow ext4_get_group_info() to fail")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 0e0226b30db6a..820804a7afe6e 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2206,7 +2206,7 @@ int ext4_mb_find_by_goal(struct ext4_allocation_context *ac,
struct ext4_group_info *grp = ext4_get_group_info(ac->ac_sb, group);
struct ext4_free_extent ex;
- if (!(ac->ac_flags & EXT4_MB_HINT_TRY_GOAL))
+ if (!(ac->ac_flags & (EXT4_MB_HINT_TRY_GOAL | EXT4_MB_HINT_GOAL_ONLY)))
return 0;
if (grp->bb_free == 0)
return 0;
