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path: root/block/blk-core.c
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2008-03-04unexport blk_{get,put}_queueAdrian Bunk1-2/+0
This patch removes the unused exports of blk_{get,put}_queue. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-03-04block: restore the meaning of rq->data_len to the true data lengthFUJITA Tomonori1-2/+1
The meaning of rq->data_len was changed to the length of an allocated buffer from the true data length. It breaks SG_IO friends and bsg. This patch restores the meaning of rq->data_len to the true data length and adds rq->extra_len to store an extended length (due to drain buffer and padding). This patch also removes the code to update bio in blk_rq_map_user introduced by the commit 40b01b9bbdf51ae543a04744283bf2d56c4a6afa. The commit adjusts bio according to memory alignment (queue_dma_alignment). However, memory alignment is NOT padding alignment. This adjustment also breaks SG_IO friends and bsg. Padding alignment needs to be fixed in a proper way (by a separate patch). Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <axboe@carl.home.kernel.dk>
2008-03-04block: fix kernel-docbook parameters and filesRandy Dunlap1-0/+2
kernel-doc for block/: - add missing parameters - fix one function's parameter list (remove blank line) - add 2 source files to docbook for non-exported kernel-doc functions Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-02-19block: add request->raw_data_lenTejun Heo1-0/+2
With padding and draining moved into it, block layer now may extend requests as directed by queue parameters, so now a request has two sizes - the original request size and the extended size which matches the size of area pointed to by bios and later by sgs. The latter size is what lower layers are primarily interested in when allocating, filling up DMA tables and setting up the controller. Both padding and draining extend the data area to accomodate controller characteristics. As any controller which speaks SCSI can handle underflows, feeding larger data area is safe. So, this patch makes the primary data length field, request->data_len, indicate the size of full data area and add a separate length field, request->raw_data_len, for the unmodified request size. The latter is used to report to higher layer (userland) and where the original request size should be fed to the controller or device. Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-02-19make blk-core.c:request_cachep static againAdrian Bunk1-1/+1
request_cachep needlessly became global. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jens Axboe <axboe@carl.home.kernel.dk>
2008-02-08Enhanced partition statistics: remove old partition statisticsJerome Marchand1-4/+0
Removes the now unused old partition statistic code. Signed-off-by: Jerome Marchand <jmarchan@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-02-08Enhanced partition statistics: update partition statiticsJerome Marchand1-4/+30
Updates the enhanced partition statistics in generic block layer besides the disk statistics. Signed-off-by: Jerome Marchand <jmarchan@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-02-08block: fixup rq_init() a bitJens Axboe1-6/+17
Rearrange fields in cache order and initialize some fields that we didn't previously init. Remove init of ->completion_data, it's part of a union with ->hash. Luckily clearing the rb node is the same as setting it to null! Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-02-01block: make core bits checkpatch compliantJens Axboe1-81/+72
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-02-01block: new end request handling interface should take unsigned byte countsJens Axboe1-7/+9
No point in passing signed integers as the byte count, they can never be negative. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-01-29block: ll_rw_blk.c split, add blk-merge.cJens Axboe1-478/+0
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-01-29block: remove dated (and wrong) comment in blk-core.cJens Axboe1-5/+0
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-01-29block: get rid of unnecessary forward declarations in blk-core.cJens Axboe1-32/+30
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-01-29block: continue ll_rw_blk.c splitupJens Axboe1-1247/+8
Adds files for barrier handling, rq execution, io context handling, mapping data to requests, and queue settings. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-01-29block: split tag and sysfs handling from blk-core.cJens Axboe1-709/+10
Seperates the tag and sysfs handling from ll_rw_blk. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-01-29block: first step of splitting ll_rw_blk, rename itJens Axboe1-0/+4457
Then we retain history in blk-core.c Signed-off-by: Jens Axboe <jens.axboe@oracle.com>