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author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-12 22:30:53 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-12 22:30:53 (GMT) |
commit | 8494bcf5b7c4b2416687e233dd34d4c6b6fe5653 (patch) | |
tree | cebb468e170e639ecfd61ddc5ebcba86c21105fa /drivers/ata/libata.h | |
parent | 3e12cefbe143b4947171ff92dd50024c4841e291 (diff) | |
parent | b042a3ca949053231950a1b15f31cccca9e305f3 (diff) | |
download | linux-8494bcf5b7c4b2416687e233dd34d4c6b6fe5653.tar.xz |
Merge branch 'for-3.20/drivers' of git://git.kernel.dk/linux-block
Pull block driver changes from Jens Axboe:
"This contains:
- The 4k/partition fixes for brd from Boaz/Matthew.
- A few xen front/back block fixes from David Vrabel and Roger Pau
Monne.
- Floppy changes from Takashi, cleaning the device file creation.
- Switching libata to use the new blk-mq tagging policy, removing
code (and a suboptimal implementation) from libata. This will
throw you a merge conflict, since a bug in the original libata
tagging code was fixed since this code was branched. Trivial.
From Shaohua.
- Conversion of loop to blk-mq, from Ming Lei.
- Cleanup of the io_schedule() handling in bsg from Peter Zijlstra.
He claims it improves on unreadable code, which will cost him a
beer.
- Maintainer update or NDB, now handled by Markus Pargmann.
- NVMe:
- Optimization from me that avoids a kmalloc/kfree per IO for
smaller (<= 8KB) IO. This cuts about 1% of high IOPS CPU
overhead.
- Removal of (now) dead RCU code, a relic from before NVMe was
converted to blk-mq"
* 'for-3.20/drivers' of git://git.kernel.dk/linux-block:
xen-blkback: default to X86_32 ABI on x86
xen-blkfront: fix accounting of reqs when migrating
xen-blkback,xen-blkfront: add myself as maintainer
block: Simplify bsg complete all
floppy: Avoid manual call of device_create_file()
NVMe: avoid kmalloc/kfree for smaller IO
MAINTAINERS: Update NBD maintainer
libata: make sata_sil24 use fifo tag allocator
libata: move sas ata tag allocation to libata-scsi.c
libata: use blk taging
NVMe: within nvme_free_queues(), delete RCU sychro/deferred free
null_blk: suppress invalid partition info
brd: Request from fdisk 4k alignment
brd: Fix all partitions BUGs
axonram: Fix bug in direct_access
loop: add blk-mq.h include
block: loop: don't handle REQ_FUA explicitly
block: loop: introduce lo_discard() and lo_req_flush()
block: loop: say goodby to bio
block: loop: improve performance via blk-mq
Diffstat (limited to 'drivers/ata/libata.h')
-rw-r--r-- | drivers/ata/libata.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h index 82ebe26..f840ca1 100644 --- a/drivers/ata/libata.h +++ b/drivers/ata/libata.h @@ -63,7 +63,7 @@ extern struct ata_link *ata_dev_phys_link(struct ata_device *dev); extern void ata_force_cbl(struct ata_port *ap); extern u64 ata_tf_to_lba(const struct ata_taskfile *tf); extern u64 ata_tf_to_lba48(const struct ata_taskfile *tf); -extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev); +extern struct ata_queued_cmd *ata_qc_new_init(struct ata_device *dev, int tag); extern int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev, u64 block, u32 n_block, unsigned int tf_flags, unsigned int tag); @@ -144,6 +144,8 @@ extern void ata_scsi_dev_rescan(struct work_struct *work); extern int ata_bus_probe(struct ata_port *ap); extern int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, unsigned int id, u64 lun); +int ata_sas_allocate_tag(struct ata_port *ap); +void ata_sas_free_tag(unsigned int tag, struct ata_port *ap); /* libata-eh.c */ |