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authorAl Viro <viro@zeniv.linux.org.uk>2015-04-07 17:22:53 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2015-04-12 05:29:47 +0300
commit0b8def9d6dfa6b2a9a2740cf81d8d2c134688d39 (patch)
treeb9f8769682257d9a8ec4ccb0a3253d021fd68ce8 /fs/udf
parente9d1593d4e9311bca040ecf6ec7599e6f235140c (diff)
downloadlinux-0b8def9d6dfa6b2a9a2740cf81d8d2c134688d39.tar.xz
__generic_file_write_iter: keep ->ki_pos and return value consistent
A side effect worth noting: in O_APPEND case we set ->ki_pos early, so if it turns out to be an error or a zero-length write, we'll end up with ->ki_pos modified. Safe, since all callers never look at the ->ki_pos after the call of __generic_file_write_iter() returning non-positive, all the way to caller of ->write_iter() and those discard ->ki_pos when getting that. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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