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authorChristoph Hellwig <hch@infradead.org>2011-06-24 14:29:42 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2011-07-20 20:47:45 -0400
commitf9b5570d7fdedff32a2e78102bfb54cd1b12b289 (patch)
tree0bbe650c809d96b25d746c400e316c3ad71b4097 /mm/rmap.c
parent9ea7df534ed2a18157434a496a12cf073ca00c52 (diff)
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fs: simplify handling of zero sized reads in __blockdev_direct_IO
Reject zero sized reads as soon as we know our I/O length, and don't borther with locks or allocations that might have to be cleaned up otherwise. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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