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| author | Zhang Yi <yi.zhang@huawei.com> | 2023-08-24 17:26:05 +0800 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2023-10-05 22:32:14 -0400 |
| commit | 8e387c89e96b9543a339f84043cf9df15fed2632 (patch) | |
| tree | eee0562ec32798589fe6f6eb754d40835dd1f461 /scripts/patch-kernel | |
| parent | 40ea98396a3659062267d1fe5f99af4f7e4f05e3 (diff) | |
| download | lwn-8e387c89e96b9543a339f84043cf9df15fed2632.tar.gz lwn-8e387c89e96b9543a339f84043cf9df15fed2632.zip | |
ext4: make sure allocate pending entry not fail
__insert_pending() allocate memory in atomic context, so the allocation
could fail, but we are not handling that failure now. It could lead
ext4_es_remove_extent() to get wrong reserved clusters, and the global
data blocks reservation count will be incorrect. The same to
extents_status entry preallocation, preallocate pending entry out of the
i_es_lock with __GFP_NOFAIL, make sure __insert_pending() and
__revise_pending() always succeeds.
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Cc: stable@kernel.org
Link: https://lore.kernel.org/r/20230824092619.1327976-3-yi.zhang@huaweicloud.com
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'scripts/patch-kernel')
0 files changed, 0 insertions, 0 deletions