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authorLinus Torvalds <torvalds@linux-foundation.org>2011-09-21 13:20:21 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-09-21 13:20:21 -0700
commitfed678dc8a8b839c8189b5d889a94e865cd327dd (patch)
treed2bf10d2a4e4ca0a27ccd6f7ae40e8e259acfcfc /drivers/mmc
parent808bf29b9195c52239b9aaeda7c6082a0ddf07c6 (diff)
parent6c4867f6469964e34c5f4ee229a2a7f71a34c7ff (diff)
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
* 'for-linus' of git://git.kernel.dk/linux-block: floppy: use del_timer_sync() in init cleanup blk-cgroup: be able to remove the record of unplugged device block: Don't check QUEUE_FLAG_SAME_COMP in __blk_complete_request mm: Add comment explaining task state setting in bdi_forker_thread() mm: Cleanup clearing of BDI_pending bit in bdi_forker_thread() block: simplify force plug flush code a little bit block: change force plug flush call order block: Fix queue_flag update when rq_affinity goes from 2 to 1 block: separate priority boosting from REQ_META block: remove READ_META and WRITE_META xen-blkback: fixed indentation and comments xen-blkback: Don't disconnect backend until state switched to XenbusStateClosed.
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/card/block.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 1ff5486213fb..4c1a648d00fc 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -926,6 +926,9 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq,
/*
* Reliable writes are used to implement Forced Unit Access and
* REQ_META accesses, and are supported only on MMCs.
+ *
+ * XXX: this really needs a good explanation of why REQ_META
+ * is treated special.
*/
bool do_rel_wr = ((req->cmd_flags & REQ_FUA) ||
(req->cmd_flags & REQ_META)) &&