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c654345924
When transparent huge pages were introduced, memory compaction and swap storms were an issue, and the kernel had to be careful to not make THP allocations cause pageout or compaction. Now that we have working compaction deferral, kswapd is smart enough to invoke compaction and the quadratic behaviour around isolate_free_pages has been fixed, it should be safe to remove __GFP_NO_KSWAPD. [minchan@kernel.org: Comment fix] [mgorman@suse.de: Avoid direct reclaim for deferred compaction] Cc: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Rik van Riel <riel@redhat.com> Signed-off-by: Mel Gorman <mgorman@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
41 lines
1.7 KiB
C
41 lines
1.7 KiB
C
/*
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* The order of these masks is important. Matching masks will be seen
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* first and the left over flags will end up showing by themselves.
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*
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* For example, if we have GFP_KERNEL before GFP_USER we wil get:
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*
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* GFP_KERNEL|GFP_HARDWALL
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*
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* Thus most bits set go first.
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*/
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#define show_gfp_flags(flags) \
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(flags) ? __print_flags(flags, "|", \
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{(unsigned long)GFP_TRANSHUGE, "GFP_TRANSHUGE"}, \
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{(unsigned long)GFP_HIGHUSER_MOVABLE, "GFP_HIGHUSER_MOVABLE"}, \
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{(unsigned long)GFP_HIGHUSER, "GFP_HIGHUSER"}, \
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{(unsigned long)GFP_USER, "GFP_USER"}, \
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{(unsigned long)GFP_TEMPORARY, "GFP_TEMPORARY"}, \
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{(unsigned long)GFP_KERNEL, "GFP_KERNEL"}, \
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{(unsigned long)GFP_NOFS, "GFP_NOFS"}, \
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{(unsigned long)GFP_ATOMIC, "GFP_ATOMIC"}, \
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{(unsigned long)GFP_NOIO, "GFP_NOIO"}, \
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{(unsigned long)__GFP_HIGH, "GFP_HIGH"}, \
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{(unsigned long)__GFP_WAIT, "GFP_WAIT"}, \
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{(unsigned long)__GFP_IO, "GFP_IO"}, \
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{(unsigned long)__GFP_COLD, "GFP_COLD"}, \
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{(unsigned long)__GFP_NOWARN, "GFP_NOWARN"}, \
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{(unsigned long)__GFP_REPEAT, "GFP_REPEAT"}, \
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{(unsigned long)__GFP_NOFAIL, "GFP_NOFAIL"}, \
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{(unsigned long)__GFP_NORETRY, "GFP_NORETRY"}, \
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{(unsigned long)__GFP_COMP, "GFP_COMP"}, \
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{(unsigned long)__GFP_ZERO, "GFP_ZERO"}, \
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{(unsigned long)__GFP_NOMEMALLOC, "GFP_NOMEMALLOC"}, \
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{(unsigned long)__GFP_MEMALLOC, "GFP_MEMALLOC"}, \
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{(unsigned long)__GFP_HARDWALL, "GFP_HARDWALL"}, \
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{(unsigned long)__GFP_THISNODE, "GFP_THISNODE"}, \
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{(unsigned long)__GFP_RECLAIMABLE, "GFP_RECLAIMABLE"}, \
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{(unsigned long)__GFP_MOVABLE, "GFP_MOVABLE"}, \
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{(unsigned long)__GFP_NOTRACK, "GFP_NOTRACK"}, \
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{(unsigned long)__GFP_OTHER_NODE, "GFP_OTHER_NODE"} \
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) : "GFP_NOWAIT"
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