diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-21 16:03:40 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-21 16:03:40 -0700 |
| commit | 548453fd107f789f5f1bc2dc13cc432ceb3b5efd (patch) | |
| tree | dc5a62d49260d66b7390ef110113134e3bef9152 /block/blk-merge.c | |
| parent | 9fd91217b15751997cab35ad309b37b44eaa6774 (diff) | |
| parent | fb199746303a6bfd6121834ec9e810471185c530 (diff) | |
Merge branch 'for-2.6.26' of git://git.kernel.dk/linux-2.6-block
* 'for-2.6.26' of git://git.kernel.dk/linux-2.6-block:
block: fix blk_register_queue() return value
block: fix memory hotplug and bouncing in block layer
block: replace remaining __FUNCTION__ occurrences
Kconfig: clean up block/Kconfig help descriptions
cciss: fix warning oops on rmmod of driver
cciss: Fix race between disk-adding code and interrupt handler
block: move the padding adjustment to blk_rq_map_sg
block: add bio_copy_user_iov support to blk_rq_map_user_iov
block: convert bio_copy_user to bio_copy_user_iov
loop: manage partitions in disk image
cdrom: use kmalloced buffers instead of buffers on stack
cdrom: make unregister_cdrom() return void
cdrom: use list_head for cdrom_device_info list
cdrom: protect cdrom_device_info list by mutex
cdrom: cleanup hardcoded error-code
cdrom: remove ifdef CONFIG_SYSCTL
Diffstat (limited to 'block/blk-merge.c')
| -rw-r--r-- | block/blk-merge.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/block/blk-merge.c b/block/blk-merge.c index 0f58616bcd7..b5c5c4a9e3f 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -220,6 +220,15 @@ new_segment: bvprv = bvec; } /* segments in rq */ + + if (unlikely(rq->cmd_flags & REQ_COPY_USER) && + (rq->data_len & q->dma_pad_mask)) { + unsigned int pad_len = (q->dma_pad_mask & ~rq->data_len) + 1; + + sg->length += pad_len; + rq->extra_len += pad_len; + } + if (q->dma_drain_size && q->dma_drain_needed(rq)) { if (rq->cmd_flags & REQ_RW) memset(q->dma_drain_buffer, 0, q->dma_drain_size); |