This is a note to let you know that I've just added the patch titled
Revert "block: all blk-mq requests are tagged"
to the 3.17-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
revert-block-all-blk-mq-requests-are-tagged.patch
and it can be found in the queue-3.17 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From e999dbc254044e8d2a5818d92d205f65bae28f37 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@xxxxxx>
Date: Sun, 19 Oct 2014 17:13:57 +0200
Subject: Revert "block: all blk-mq requests are tagged"
From: Christoph Hellwig <hch@xxxxxx>
commit e999dbc254044e8d2a5818d92d205f65bae28f37 upstream.
This reverts commit fb3ccb5da71273e7f0d50b50bc879e50cedd60e7.
SCSI-2/SPI actually needs the tagged/untagged flag in the request to
work properly. Revert this patch and add a follow on to set it in
the right place.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Acked-by: Jens Axboe <axboe@xxxxxxxxx>
Reported-by: Meelis Roos <mroos@xxxxxxxx>
Tested-by: Meelis Roos <mroos@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
include/linux/blkdev.h | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1142,8 +1142,7 @@ static inline bool blk_needs_flush_plug(
/*
* tag stuff
*/
-#define blk_rq_tagged(rq) \
- ((rq)->mq_ctx || ((rq)->cmd_flags & REQ_QUEUED))
+#define blk_rq_tagged(rq) ((rq)->cmd_flags & REQ_QUEUED)
extern int blk_queue_start_tag(struct request_queue *, struct request *);
extern struct request *blk_queue_find_tag(struct request_queue *, int);
extern void blk_queue_end_tag(struct request_queue *, struct request *);
Patches currently in stable-queue which might be from hch@xxxxxx are
queue-3.17/fs-fix-theoretical-division-by-0-in-super_cache_scan.patch
queue-3.17/revert-block-all-blk-mq-requests-are-tagged.patch
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