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authorLinus Torvalds <torvalds@linux-foundation.org>2015-02-12 14:30:53 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-12 14:30:53 -0800
commit8494bcf5b7c4b2416687e233dd34d4c6b6fe5653 (patch)
treecebb468e170e639ecfd61ddc5ebcba86c21105fa /include/linux/libata.h
parent3e12cefbe143b4947171ff92dd50024c4841e291 (diff)
parentb042a3ca949053231950a1b15f31cccca9e305f3 (diff)
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 'include/linux/libata.h')
-rw-r--r--include/linux/libata.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 61df823ac86a..fc03efa64ffe 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -823,10 +823,10 @@ struct ata_port {
unsigned int cbl; /* cable type; ATA_CBL_xxx */
struct ata_queued_cmd qcmd[ATA_MAX_QUEUE];
- unsigned long qc_allocated;
+ unsigned long sas_tag_allocated; /* for sas tag allocation only */
unsigned int qc_active;
int nr_active_links; /* #links with active qcs */
- unsigned int last_tag; /* track next tag hw expects */
+ unsigned int sas_last_tag; /* track next tag hw expects */
struct ata_link link; /* host default link */
struct ata_link *slave_link; /* see ata_slave_link_init() */
@@ -1352,6 +1352,7 @@ extern struct device_attribute *ata_common_sdev_attrs[];
.ioctl = ata_scsi_ioctl, \
.queuecommand = ata_scsi_queuecmd, \
.can_queue = ATA_DEF_QUEUE, \
+ .tag_alloc_policy = BLK_TAG_ALLOC_RR, \
.this_id = ATA_SHT_THIS_ID, \
.cmd_per_lun = ATA_SHT_CMD_PER_LUN, \
.emulated = ATA_SHT_EMULATED, \