[PATCH] s390: enable write barriers in the dasd driver

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The DASD device driver never reorders the I/O requests and relies on the
hardware to write all data to nonvolatile storage before signaling a
successful write.  Hence, the only thing we have to do to support write
barriers is to set the queue ordered flag.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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Stefan Weinhuber 2005-05-01 08:58:59 -07:00 • committed by Linus Torvalds

parent f24acd4503

commit 6ed93c827e

1 changed files with 1 additions and 0 deletions

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drivers/s390/block/dasd.c

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