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mm: strictly nested kmap_atomic()

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Ensure kmap_atomic() usage is strictly nested

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Reviewed-by: Rik van Riel <riel@redhat.com>
Acked-by: Chris Metcalf <cmetcalf@tilera.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: David Miller <davem@davemloft.net>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Peter Zijlstra
2010-10-26 14:21:47 -07:00
committed by Linus Torvalds
parent 2e30244a7c
commit 61ecdb801e
5 changed files with 8 additions and 8 deletions
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2
crypto/blkcipher.c
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@@ -89,9 +89,9 @@ static inline unsigned int blkcipher_done_fast(struct blkcipher_walk *walk,
memcpy(walk->dst.virt.addr, walk->page, n);
blkcipher_unmap_dst(walk);
} else if (!(walk->flags & BLKCIPHER_WALK_PHYS)) {
blkcipher_unmap_src(walk);
if (walk->flags & BLKCIPHER_WALK_DIFF)
blkcipher_unmap_dst(walk);
blkcipher_unmap_src(walk);
}
scatterwalk_advance(&walk->in, n);