• Daniel McNeil's avatar
    [PATCH] Direct IO async short read fix · 29504ff3
    Daniel McNeil authored
    The direct I/O code is mapping the read request to the file system block.  If
    the file size was not on a block boundary, the result would show the the read
    reading past EOF.  This was only happening for the AIO case.  The non-AIO case
    truncates the result to match file size (in direct_io_worker).  This patch
    does the same thing for the AIO case, it truncates the result to match the
    file size if the read reads past EOF.
    When I/O completes the result can be truncated to match the file size
    without using i_size_read(), thus the aio result now matches the number of
    bytes read to the end of file.
    Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
direct-io.c 34.5 KB