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    fix ITER_PIPE interaction with direct_IO · c3a69024
    Al Viro 提交于
    by making sure we call iov_iter_advance() on original
    iov_iter even if direct_IO (done on its copy) has returned 0.
    It's a no-op for old iov_iter flavours and does the right thing
    (== truncation of the stuff we'd allocated, but not filled) in
    ITER_PIPE case.  Failures (e.g. -EIO) get caught and dealt with
    by cleanup in generic_file_read_iter().
    Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
    c3a69024
xfs_file.c 42.8 KB