The patch titled
fix BUG_ON(!PageSlab) from fallback_alloc
has been added to the -mm tree. Its filename is
fix-bug_onpageslab-from-fallback_alloc.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: fix BUG_ON(!PageSlab) from fallback_alloc
From: Hugh Dickins <hugh@xxxxxxxxxxx>
pdflush hit the BUG_ON(!PageSlab(page)) in kmem_freepages called from
fallback_alloc: cache_grow already freed those pages when alloc_slabmgmt
failed. But it wouldn't have freed them if __GFP_NO_GROW, so make sure
fallback_alloc doesn't waste its time on that case.
Signed-off-by: Hugh Dickins <hugh@xxxxxxxxxxx>
Cc: Christoph Lameter <clameter@xxxxxxx>
Cc: Pekka J Enberg <penberg@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
mm/slab.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff -puN mm/slab.c~fix-bug_onpageslab-from-fallback_alloc mm/slab.c
--- a/mm/slab.c~fix-bug_onpageslab-from-fallback_alloc
+++ a/mm/slab.c
@@ -3281,7 +3281,7 @@ retry:
flags | GFP_THISNODE, nid);
}
- if (!obj) {
+ if (!obj && !(flags & __GFP_NO_GROW)) {
/*
* This allocation will be performed within the constraints
* of the current cpuset / memory policy requirements.
@@ -3310,7 +3310,7 @@ retry:
*/
goto retry;
} else {
- kmem_freepages(cache, obj);
+ /* cache_grow already freed obj */
obj = NULL;
}
}
_
Patches currently in -mm which might be from hugh@xxxxxxxxxxx are
fix-bug_onpageslab-from-fallback_alloc.patch
ext2-reservations.patch
ext2-balloc-fix-_with_rsv-freeze.patch
ext2-balloc-reset-windowsz-when-full.patch
ext2-balloc-fix-off-by-one-against-rsv_end.patch
ext2-balloc-fix-off-by-one-against-grp_goal.patch
ext2-balloc-say-rb_entry-not-list_entry.patch
ext2-balloc-use-io_error-label.patch
-
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