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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2010-10-26 23:21:47 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-27 01:52:08 +0200 |
| commit | 61ecdb801ef2cd28e32442383106d7837d76deac (patch) | |
| tree | 3ec4f04e09cc4a9b76dafaaa0c4dfd07e825e632 /drivers/block/loop.c | |
| parent | vmscan,tmpfs: treat used once pages on tmpfs as used once (diff) | |
| download | linux-61ecdb801ef2cd28e32442383106d7837d76deac.tar.xz linux-61ecdb801ef2cd28e32442383106d7837d76deac.zip | |
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.c | 4 |
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; } |