https://github.com/torvalds/linux
Revision 80409c65e2c6cd1540045ee01fc55e50d95e0983 authored by Jan Kara on 01 February 2019, 22:20:27 UTC, committed by Linus Torvalds on 01 February 2019, 23:46:23 UTC
Currently, buffer_migrate_page_norefs() was constantly failing because buffer_migrate_lock_buffers() grabbed reference on each buffer. In fact, there's no reason for buffer_migrate_lock_buffers() to grab any buffer references as the page is locked during all our operation and thus nobody can reclaim buffers from the page. So remove grabbing of buffer references which also makes buffer_migrate_page_norefs() succeed. Link: http://lkml.kernel.org/r/20190116131217.7226-1-jack@suse.cz Fixes: 89cb0888ca14 "mm: migrate: provide buffer_migrate_page_norefs()" Signed-off-by: Jan Kara <jack@suse.cz> Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: David Rientjes <rientjes@google.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Zi Yan <zi.yan@cs.rutgers.edu> Cc: Johannes Weiner <hannes@cmpxchg.org> 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 8fb335e
Tip revision: 80409c65e2c6cd1540045ee01fc55e50d95e0983 authored by Jan Kara on 01 February 2019, 22:20:27 UTC
mm: migrate: make buffer_migrate_page_norefs() actually succeed
mm: migrate: make buffer_migrate_page_norefs() actually succeed
Tip revision: 80409c6
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| Makefile | -rw-r--r-- | 59.1 KB |
| README | -rw-r--r-- | 727 bytes |
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