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authorTejun Heo <tj@kernel.org>2015-03-24 21:14:18 +0300
committerTejun Heo <tj@kernel.org>2015-03-24 21:14:18 +0300
commit3a02824396c1df1db422d067b0fdcac724f44dd6 (patch)
tree94194de9c52ec3aac023d68b548943150d151731 /include/linux/libata.h
parentdb7a657f3c2de202e8d648b03bc25bcd9a4de1d8 (diff)
downloadlinux-3a02824396c1df1db422d067b0fdcac724f44dd6.tar.xz
libata: remove ATA_FLAG_LOWTAG
sata_sil24 for some reason pukes when tags are allocated round-robin which helps tag ordered controllers. To work around the issue, 72dd299d5039 ("libata: allow sata_sil24 to opt-out of tag ordered submission") introduced ATA_FLAG_LOWTAG which tells libata tag allocation to do lowest-first. However, with the recent switch to blk-mq tag allocation, the liata tag allocation code path is no longer used and the workaround is now implemented in the block layer and selected by setting scsi_host_template->tag_alloc_policy to BLK_TAG_ALLOC_FIFO. See 9269e23496dd ("libata: make sata_sil24 use fifo tag allocator"). This leaves ATA_FLAG_LOWTAG withoout any actual user. Remove it. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Shaohua Li <shli@fb.com> Cc: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include/linux/libata.h')
-rw-r--r--include/linux/libata.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h
index fc03efa64ffe..ebe132a4873c 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -231,7 +231,6 @@ enum {
ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity
* led */
ATA_FLAG_NO_DIPM = (1 << 23), /* host not happy with DIPM */
- ATA_FLAG_LOWTAG = (1 << 24), /* host wants lowest available tag */
/* bits 24:31 of ap->flags are reserved for LLD specific flags */