Revision bbdb396a60b2ebf7de3b717991e5d3e28c8b7bbd authored by Martin Bligh on 28 October 2006, 17:38:25 UTC, committed by Linus Torvalds on 28 October 2006, 18:30:51 UTC
If try_to_free_pages / balance_pgdat are called with a gfp_mask specifying GFP_IO and/or GFP_FS, they will reclaim the requisite number of pages, and the reset prev_priority to DEF_PRIORITY (or to some other high (ie: unurgent) value). However, another reclaimer without those gfp_mask flags set (say, GFP_NOIO) may still be struggling to reclaim pages. The concurrent overwrite of zone->prev_priority will cause this GFP_NOIO thread to unexpectedly cease deactivating mapped pages, thus causing reclaim difficulties. Fix this is to key the distress calculation not off zone->prev_priority, but also take into account the local caller's priority by using min(zone->prev_priority, sc->priority) Signed-off-by: Martin J. Bligh <mbligh@google.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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File | Mode | Size |
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Kconfig | -rw-r--r-- | 5.0 KB |
Makefile | -rw-r--r-- | 1017 bytes |
allocpercpu.c | -rw-r--r-- | 3.7 KB |
backing-dev.c | -rw-r--r-- | 1.7 KB |
bootmem.c | -rw-r--r-- | 12.0 KB |
bounce.c | -rw-r--r-- | 6.5 KB |
fadvise.c | -rw-r--r-- | 2.6 KB |
filemap.c | -rw-r--r-- | 62.9 KB |
filemap.h | -rw-r--r-- | 2.8 KB |
filemap_xip.c | -rw-r--r-- | 10.3 KB |
fremap.c | -rw-r--r-- | 6.1 KB |
highmem.c | -rw-r--r-- | 7.8 KB |
hugetlb.c | -rw-r--r-- | 19.0 KB |
internal.h | -rw-r--r-- | 1.0 KB |
madvise.c | -rw-r--r-- | 8.6 KB |
memory.c | -rw-r--r-- | 71.4 KB |
memory_hotplug.c | -rw-r--r-- | 7.3 KB |
mempolicy.c | -rw-r--r-- | 47.0 KB |
mempool.c | -rw-r--r-- | 9.0 KB |
migrate.c | -rw-r--r-- | 21.3 KB |
mincore.c | -rw-r--r-- | 4.4 KB |
mlock.c | -rw-r--r-- | 5.3 KB |
mmap.c | -rw-r--r-- | 54.2 KB |
mmzone.c | -rw-r--r-- | 925 bytes |
mprotect.c | -rw-r--r-- | 7.5 KB |
mremap.c | -rw-r--r-- | 10.7 KB |
msync.c | -rw-r--r-- | 2.4 KB |
nommu.c | -rw-r--r-- | 31.3 KB |
oom_kill.c | -rw-r--r-- | 11.5 KB |
page-writeback.c | -rw-r--r-- | 26.8 KB |
page_alloc.c | -rw-r--r-- | 83.5 KB |
page_io.c | -rw-r--r-- | 4.5 KB |
pdflush.c | -rw-r--r-- | 6.3 KB |
prio_tree.c | -rw-r--r-- | 6.3 KB |
readahead.c | -rw-r--r-- | 16.9 KB |
rmap.c | -rw-r--r-- | 24.3 KB |
shmem.c | -rw-r--r-- | 62.9 KB |
shmem_acl.c | -rw-r--r-- | 4.6 KB |
slab.c | -rw-r--r-- | 110.0 KB |
slob.c | -rw-r--r-- | 7.9 KB |
sparse.c | -rw-r--r-- | 7.2 KB |
swap.c | -rw-r--r-- | 12.4 KB |
swap_state.c | -rw-r--r-- | 9.3 KB |
swapfile.c | -rw-r--r-- | 43.1 KB |
thrash.c | -rw-r--r-- | 2.7 KB |
tiny-shmem.c | -rw-r--r-- | 3.2 KB |
truncate.c | -rw-r--r-- | 11.2 KB |
util.c | -rw-r--r-- | 1.7 KB |
vmalloc.c | -rw-r--r-- | 17.1 KB |
vmscan.c | -rw-r--r-- | 46.9 KB |
vmstat.c | -rw-r--r-- | 15.5 KB |
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