[SCSI] block: make blk_rq_map_user take a NULL user-space buffer for WRITE

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The commit 818827669d (block: make
blk_rq_map_user take a NULL user-space buffer) extended
blk_rq_map_user to accept a NULL user-space buffer with a READ
command. It was necessary to convert sg to use the block layer mapping
API.

This patch extends blk_rq_map_user again for a WRITE command. It is
necessary to convert st and osst drivers to use the block layer
apping API.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

...

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FUJITA Tomonori 2008-12-18 14:49:38 +09:00 • committed by James Bottomley

parent 56c451f4b5

commit 97ae77a1cd

4 changed files with 10 additions and 10 deletions

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include/linux/blkdev.h

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