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| author | Mel Gorman <[email protected]> | 2012-09-17 21:09:03 +0000 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2012-09-17 22:00:38 +0000 |
| commit | 30c29bea6af2d3b6ffc8865864de7fc08cadb5df (patch) | |
| tree | b01c1ad1f07cfe5d2a7b0b6b2704358c70994899 /lib/mpi/mpi-internal.h | |
| parent | nbd: clear waiting_queue on shutdown (diff) | |
| download | kernel-30c29bea6af2d3b6ffc8865864de7fc08cadb5df.tar.gz kernel-30c29bea6af2d3b6ffc8865864de7fc08cadb5df.zip | |
slab: do ClearSlabPfmemalloc() for all pages of slab
Right now, we call ClearSlabPfmemalloc() for first page of slab when we
clear SlabPfmemalloc flag. This is fine for most swap-over-network use
cases as it is expected that order-0 pages are in use. Unfortunately it
is possible that that __ac_put_obj() checks SlabPfmemalloc on a tail
page and while this is harmless, it is sloppy. This patch ensures that
the head page is always used.
This problem was originally identified by Joonsoo Kim.
[[email protected]: Original implementation and problem identification]
Signed-off-by: Mel Gorman <[email protected]>
Cc: David Miller <[email protected]>
Cc: Chuck Lever <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Pekka Enberg <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'lib/mpi/mpi-internal.h')
0 files changed, 0 insertions, 0 deletions