aio: use iovec array rather than the single one

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Previously, we only offer a single iovec to handle all the read/write cases, so
the PREADV/PWRITEV request always need to alloc more iovec buffer when copying
user vectors.
If we use a tmp iovec array rather than the single one, some small PREADV/PWRITEV
workloads(vector size small than the tmp buffer) will not need to alloc more
iovec buffer when copying user vectors.

Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>

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Gu Zheng 2014-07-23 18:03:54 +08:00 • committed by Benjamin LaHaise

parent 2be4e7deec

commit 00fefb9cf2

1 changed files with 5 additions and 5 deletions

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fs/aio.c

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