mm: vmalloc: don't remove inexistent guard hole in remove_vm_area()

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Commit 71394fe501 ("mm: vmalloc: add flag preventing guard hole
allocation") missed a spot.  Currently remove_vm_area() decreases vm->size
to "remove" the guard hole page, even when it isn't present.  All but one
users just free the vm_struct rigth away and never access vm->size anyway.

Don't touch the size in remove_vm_area() and have __vunmap() use the
proper get_vm_area_size() helper.

Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

...

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Jerome Marchand 2015-11-20 15:57:02 -08:00 • committed by Linus Torvalds

parent 429d48622c

commit 7511c3ede7

1 changed files with 2 additions and 3 deletions

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mm/vmalloc.c

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