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direct-io: add flag to allow aio writes beyond i_size

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Some filesystems can handle direct I/O writes beyond i_size safely,
so allow them to opt into receiving them.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Christoph Hellwig 2014-02-10 10:27:11 +11:00 • committed by Dave Chinner
parent 38dbfb59d1
commit 6039257378
2 changed files with 15 additions and 6 deletions
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3
include/linux/fs.h
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@ -2527,6 +2527,9 @@ enum {
/* filesystem does not support filling holes */
DIO_SKIP_HOLES = 0x02,
/* filesystem can handle aio writes beyond i_size */
DIO_ASYNC_EXTEND = 0x04,
};
void dio_end_io(struct bio *bio, int error);