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authorLinus Torvalds <torvalds@linux-foundation.org>2009-02-18 18:33:04 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-02-18 18:33:04 -0800
commitba95fd47d177d46743ad94055908d22840370e06 (patch)
treef29e6921fefba2728c3b7f6854ac7f7729f602b2 /block
parent59af0a0b5848caf38f1bf7013905c3e9cdba4d1d (diff)
parentbe987fdb55a4726e2fcbab7501f89276bdb57288 (diff)
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: fix deadlock in blk_abort_queue() for drivers that readd to timeout list block: fix booting from partitioned md array block: revert part of 18ce3751ccd488c78d3827e9f6bf54e6322676fb cciss: PCI power management reset for kexec paride/pg.c: xs(): &&/|| confusion fs/bio: bio_alloc_bioset: pass right object ptr to mempool_free block: fix bad definition of BIO_RW_SYNC bsg: Fix sense buffer bug in SG_IO
Diffstat (limited to 'block')
-rw-r--r--block/blk-timeout.c9
-rw-r--r--block/blktrace.c2
-rw-r--r--block/bsg.c17
-rw-r--r--block/genhd.c8
4 files changed, 27 insertions, 9 deletions
diff --git a/block/blk-timeout.c b/block/blk-timeout.c
index a09535377a9..bbbdc4b8ccf 100644
--- a/block/blk-timeout.c
+++ b/block/blk-timeout.c
@@ -209,12 +209,19 @@ void blk_abort_queue(struct request_queue *q)
{
unsigned long flags;
struct request *rq, *tmp;
+ LIST_HEAD(list);
spin_lock_irqsave(q->queue_lock, flags);
elv_abort_queue(q);
- list_for_each_entry_safe(rq, tmp, &q->timeout_list, timeout_list)
+ /*
+ * Splice entries to local list, to avoid deadlocking if entries
+ * get readded to the timeout list by error handling
+ */
+ list_splice_init(&q->timeout_list, &list);
+
+ list_for_each_entry_safe(rq, tmp, &list, timeout_list)
blk_abort_request(rq);
spin_unlock_irqrestore(q->queue_lock, flags);
diff --git a/block/blktrace.c b/block/blktrace.c
index 39cc3bfe56e..7cf9d1ff45a 100644
--- a/block/blktrace.c
+++ b/block/blktrace.c
@@ -142,7 +142,7 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes,
what |= ddir_act[rw & WRITE];
what |= MASK_TC_BIT(rw, BARRIER);
- what |= MASK_TC_BIT(rw, SYNC);
+ what |= MASK_TC_BIT(rw, SYNCIO);
what |= MASK_TC_BIT(rw, AHEAD);
what |= MASK_TC_BIT(rw, META);
what |= MASK_TC_BIT(rw, DISCARD);
diff --git a/block/bsg.c b/block/bsg.c
index d414bb5607e..0ce8806dd0c 100644
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -244,7 +244,8 @@ bsg_validate_sgv4_hdr(struct request_queue *q, struct sg_io_v4 *hdr, int *rw)
* map sg_io_v4 to a request.
*/
static struct request *
-bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm)
+bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm,
+ u8 *sense)
{
struct request_queue *q = bd->queue;
struct request *rq, *next_rq = NULL;
@@ -306,6 +307,10 @@ bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm)
if (ret)
goto out;
}
+
+ rq->sense = sense;
+ rq->sense_len = 0;
+
return rq;
out:
if (rq->cmd != rq->__cmd)
@@ -348,9 +353,6 @@ static void bsg_rq_end_io(struct request *rq, int uptodate)
static void bsg_add_command(struct bsg_device *bd, struct request_queue *q,
struct bsg_command *bc, struct request *rq)
{
- rq->sense = bc->sense;
- rq->sense_len = 0;
-
/*
* add bc command to busy queue and submit rq for io
*/
@@ -419,7 +421,7 @@ static int blk_complete_sgv4_hdr_rq(struct request *rq, struct sg_io_v4 *hdr,
{
int ret = 0;
- dprintk("rq %p bio %p %u\n", rq, bio, rq->errors);
+ dprintk("rq %p bio %p 0x%x\n", rq, bio, rq->errors);
/*
* fill in all the output members
*/
@@ -635,7 +637,7 @@ static int __bsg_write(struct bsg_device *bd, const char __user *buf,
/*
* get a request, fill in the blanks, and add to request queue
*/
- rq = bsg_map_hdr(bd, &bc->hdr, has_write_perm);
+ rq = bsg_map_hdr(bd, &bc->hdr, has_write_perm, bc->sense);
if (IS_ERR(rq)) {
ret = PTR_ERR(rq);
rq = NULL;
@@ -922,11 +924,12 @@ static long bsg_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
struct request *rq;
struct bio *bio, *bidi_bio = NULL;
struct sg_io_v4 hdr;
+ u8 sense[SCSI_SENSE_BUFFERSIZE];
if (copy_from_user(&hdr, uarg, sizeof(hdr)))
return -EFAULT;
- rq = bsg_map_hdr(bd, &hdr, file->f_mode & FMODE_WRITE);
+ rq = bsg_map_hdr(bd, &hdr, file->f_mode & FMODE_WRITE, sense);
if (IS_ERR(rq))
return PTR_ERR(rq);
diff --git a/block/genhd.c b/block/genhd.c
index 397960cf26a..e1eadcc9546 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -1087,6 +1087,14 @@ dev_t blk_lookup_devt(const char *name, int partno)
if (strcmp(dev_name(dev), name))
continue;
+ if (partno < disk->minors) {
+ /* We need to return the right devno, even
+ * if the partition doesn't exist yet.
+ */
+ devt = MKDEV(MAJOR(dev->devt),
+ MINOR(dev->devt) + partno);
+ break;
+ }
part = disk_get_part(disk, partno);
if (part) {
devt = part_devt(part);