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author | Dave Chinner <dchinner@redhat.com> | 2014-12-03 22:43:13 (GMT) |
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committer | Dave Chinner <david@fromorbit.com> | 2014-12-03 22:43:13 (GMT) |
commit | 2d3d0c53df99587e1d58759f805c3aae79fac453 (patch) | |
tree | 0ee91663769ac5c8b3e67d833a596efa1a15b72d /fs/xfs/xfs_iops.c | |
parent | cdc9cec7c0ff521edf8c0e9c9432bf8fdccfc702 (diff) | |
download | linux-2d3d0c53df99587e1d58759f805c3aae79fac453.tar.xz |
xfs: lobotomise xfs_trans_read_buf_map()
There's a case in that code where it checks for a buffer match in a
transaction where the buffer is not marked done. i.e. trying to
catch a buffer we have locked in the transaction but have not
completed IO on.
The only way we can find a buffer that has not had IO completed on
it is if it had readahead issued on it, but we never do readahead on
buffers that we have already joined into a transaction. Hence this
condition cannot occur, and buffers locked and joined into a
transaction should always be marked done and not under IO.
Remove this code and re-order xfs_trans_read_buf_map() to remove
duplicated IO dispatch and error handling code.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_iops.c')
0 files changed, 0 insertions, 0 deletions