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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2010-10-26 14:21:47 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-26 16:52:08 -0700
commit61ecdb801ef2cd28e32442383106d7837d76deac (patch)
tree3ec4f04e09cc4a9b76dafaaa0c4dfd07e825e632 /drivers/block/loop.c
parent2e30244a7cc1ff09013a1238d415b4076406388e (diff)
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mm: strictly nested kmap_atomic()
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>
Diffstat (limited to 'drivers/block/loop.c')
-rw-r--r--drivers/block/loop.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 6c48b3545f84..450c958b514f 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -101,8 +101,8 @@ static int transfer_none(struct loop_device *lo, int cmd,
else
memcpy(raw_buf, loop_buf, size);
- kunmap_atomic(raw_buf, KM_USER0);
kunmap_atomic(loop_buf, KM_USER1);
+ kunmap_atomic(raw_buf, KM_USER0);
cond_resched();
return 0;
}
@@ -130,8 +130,8 @@ static int transfer_xor(struct loop_device *lo, int cmd,
for (i = 0; i < size; i++)
*out++ = *in++ ^ key[(i & 511) % keysize];
- kunmap_atomic(raw_buf, KM_USER0);
kunmap_atomic(loop_buf, KM_USER1);
+ kunmap_atomic(raw_buf, KM_USER0);
cond_resched();
return 0;
}