]> git.baikalelectronics.ru Git - kernel.git/commit
mm/z3fold: fix sheduling while atomic
authorMiaohe Lin <linmiaohe@huawei.com>
Fri, 29 Apr 2022 06:40:43 +0000 (14:40 +0800)
committerakpm <akpm@linux-foundation.org>
Fri, 27 May 2022 16:33:43 +0000 (09:33 -0700)
commitb2267dd49a6df0bd385cedad62e236d454e01a95
tree3022529a6420694abb376108a463c490bfe1de61
parentcedc305c1ec3ee38060d2ff0e1fd4424fe2528e2
mm/z3fold: fix sheduling while atomic

Patch series "A few fixup patches for z3fold".

This series contains a few fixup patches to fix sheduling while atomic,
fix possible null pointer dereferencing, fix various race conditions and
so on. More details can be found in the respective changelogs.

This patch (of 9):

z3fold's page_lock is always held when calling alloc_slots.  So gfp should
be GFP_ATOMIC to avoid "scheduling while atomic" bug.

Link: https://lkml.kernel.org/r/20220429064051.61552-1-linmiaohe@huawei.com
Link: https://lkml.kernel.org/r/20220429064051.61552-2-linmiaohe@huawei.com
Fixes: 8836913fa54b ("z3fold: simplify freeing slots")
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Vitaly Wool <vitaly.wool@konsulko.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
mm/z3fold.c