linux/include
Linus Torvalds caf491916b Revert "revert "Revert "mm: remove __GFP_NO_KSWAPD""" and associated damage
This reverts commits a50915394f and
d7c3b937bd.

This is a revert of a revert of a revert.  In addition, it reverts the
even older i915 change to stop using the __GFP_NO_KSWAPD flag due to the
original commits in linux-next.

It turns out that the original patch really was bogus, and that the
original revert was the correct thing to do after all.  We thought we
had fixed the problem, and then reverted the revert, but the problem
really is fundamental: waking up kswapd simply isn't the right thing to
do, and direct reclaim sometimes simply _is_ the right thing to do.

When certain allocations fail, we simply should try some direct reclaim,
and if that fails, fail the allocation.  That's the right thing to do
for THP allocations, which can easily fail, and the GPU allocations want
to do that too.

So starting kswapd is sometimes simply wrong, and removing the flag that
said "don't start kswapd" was a mistake.  Let's hope we never revisit
this mistake again - and certainly not this many times ;)

Acked-by: Mel Gorman <mgorman@suse.de>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-10 11:03:05 -08:00
..
acpi
asm-generic
clocksource
crypto
drm drm/radeon: add new SI pci id 2012-11-21 18:37:38 -05:00
keys
linux Revert "revert "Revert "mm: remove __GFP_NO_KSWAPD""" and associated damage 2012-12-10 11:03:05 -08:00
math-emu
media [media] adv7604: Replace prim_mode by mode 2012-11-21 17:43:49 -02:00
memory
misc
net tcp: bug fix Fast Open client retransmission 2012-12-07 14:39:28 -05:00
pcmcia
ras
rdma
rxrpc
scsi [SCSI] sd: Implement support for WRITE SAME 2012-11-13 22:45:42 -08:00
sound
target
trace Revert "revert "Revert "mm: remove __GFP_NO_KSWAPD""" and associated damage 2012-12-10 11:03:05 -08:00
uapi Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-12-01 13:07:48 -08:00
video
xen Bug-fixes: 2012-11-10 06:56:21 +01:00
Kbuild