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(parent: 7798330) | patch
mm: make stack guard page logic use vm_prev pointer
authorLinus Torvalds <torvalds@linux-foundation.org>
Fri, 20 Aug 2010 23:49:40 +0000 (16:49 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sat, 21 Aug 2010 15:50:00 +0000 (08:50 -0700)
commit0e8e50e20c837eeec8323bba7dcd25fe5479194c
tree12c7ec767a4a8508be33442c6fb55c28a26c94cdtree | snapshot (tar.gz zip)
parent7798330ac8114c731cfab83e634c6ecedaa233d7commit | diff
mm: make stack guard page logic use vm_prev pointer

Like the mlock() change previously, this makes the stack guard check
code use vma->vm_prev to see what the mapping below the current stack
is, rather than have to look it up with find_vma().

Also, accept an abutting stack segment, since that happens naturally if
you split the stack with mlock or mprotect.

Tested-by: Ian Campbell <ijc@hellion.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/memory.c diff | blob | blame | history
kernel source for telekom puls (alcatel/mediatek)