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swh:1:snp:38ae39f9fd01a4b0ef06fab5668b65bf4c2aca03
Revision fa41b900c30b45fab03783724932dc30cd46a6be authored by Kirill A. Shutemov on 22 March 2018, 23:17:31 UTC, committed by Linus Torvalds on 23 March 2018, 00:07:01 UTC 
mm/thp: do not wait for lock_page() in deferred_split_scan()
 
deferred_split_scan() gets called from reclaim path.  Waiting for page
lock may lead to deadlock there.

Replace lock_page() with trylock_page() and skip the page if we failed
to lock it.  We will get to the page on the next scan.

Link: http://lkml.kernel.org/r/20180315150747.31945-1-kirill.shutemov@linux.intel.com
Fixes: 9a982250f773 ("thp: introduce deferred_split_huge_page()")
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent fece202
History
Tip revision: 0cdd776ec92c0fec768c7079331804d3e52d4b27 authored by Linus Torvalds on 15 May 2022, 15:08:51 UTC
Merge tag 'driver-core-5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Tip revision: 0cdd776
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.cocciconfig -rw-r--r-- 59 bytes
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