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Merge branch 'for-3.8/drivers' of git://git.kernel.dk/linux-block

Browse Source 
Pull block driver update from Jens Axboe:
 "Now that the core bits are in, here are the driver bits for 3.8.  The
  branch contains:

   - A huge pile of drbd bits that were dumped from the 3.7 merge
     window.  Following that, it was both made perfectly clear that
     there is going to be no more over-the-wall pulls and how the
     situation on individual pulls can be improved.

   - A few cleanups from Akinobu Mita for drbd and cciss.

   - Queue improvement for loop from Lukas.  This grew into adding a
     generic interface for waiting/checking an even with a specific
     lock, allowing this to be pulled out of md and now loop and drbd is
     also using it.

   - A few fixes for xen back/front block driver from Roger Pau Monne.

   - Partition improvements from Stephen Warren, allowing partiion UUID
     to be used as an identifier."

* 'for-3.8/drivers' of git://git.kernel.dk/linux-block: (609 commits)
  drbd: update Kconfig to match current dependencies
  drbd: Fix drbdsetup wait-connect, wait-sync etc... commands
  drbd: close race between drbd_set_role and drbd_connect
  drbd: respect no-md-barriers setting also when changed online via disk-options
  drbd: Remove obsolete check
  drbd: fixup after wait_even_lock_irq() addition to generic code
  loop: Limit the number of requests in the bio list
  wait: add wait_event_lock_irq() interface
  xen-blkfront: free allocated page
  xen-blkback: move free persistent grants code
  block: partition: msdos: provide UUIDs for partitions
  init: reduce PARTUUID min length to 1 from 36
  block: store partition_meta_info.uuid as a string
  cciss: use check_signature()
  cciss: cleanup bitops usage
  drbd: use copy_highpage
  drbd: if the replication link breaks during handshake, keep retrying
  drbd: check return of kmalloc in receive_uuids
  drbd: Broadcast sync progress no more often than once per second
  drbd: don't try to clear bits once the disk has failed
  ...
This commit is contained in:
Linus Torvalds
2012-12-17 13:39:11 -08:00
parent 9360b53661 d2ec180c23
commit 9228ff9038
49 changed files with 13021 additions and 8737 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/md/md.c
View File

@@ -452,7 +452,7 @@ void md_flush_request(struct mddev *mddev, struct bio *bio)
spin_lock_irq(&mddev->write_lock);
wait_event_lock_irq(mddev->sb_wait,
!mddev->flush_bio,
mddev->write_lock, /*nothing*/);
mddev->write_lock);
mddev->flush_bio = bio;
spin_unlock_irq(&mddev->write_lock);

26
drivers/md/md.h
View File

@@ -551,32 +551,6 @@ struct md_thread {
#define THREAD_WAKEUP 0
#define __wait_event_lock_irq(wq, condition, lock, cmd) \
do { \
wait_queue_t __wait; \
init_waitqueue_entry(&__wait, current); \
\
add_wait_queue(&wq, &__wait); \
for (;;) { \
set_current_state(TASK_UNINTERRUPTIBLE); \
if (condition) \
break; \
spin_unlock_irq(&lock); \
cmd; \
schedule(); \
spin_lock_irq(&lock); \
} \
current->state = TASK_RUNNING; \
remove_wait_queue(&wq, &__wait); \
} while (0)
#define wait_event_lock_irq(wq, condition, lock, cmd) \
do { \
if (condition) \
break; \
__wait_event_lock_irq(wq, condition, lock, cmd); \
} while (0)
static inline void safe_put_page(struct page *p)
{
if (p) put_page(p);

15
drivers/md/raid1.c
View File

@@ -822,7 +822,7 @@ static void raise_barrier(struct r1conf *conf)
/* Wait until no block IO is waiting */
wait_event_lock_irq(conf->wait_barrier, !conf->nr_waiting,
conf->resync_lock, );
conf->resync_lock);
/* block any new IO from starting */
conf->barrier++;
@@ -830,7 +830,7 @@ static void raise_barrier(struct r1conf *conf)
/* Now wait for all pending IO to complete */
wait_event_lock_irq(conf->wait_barrier,
!conf->nr_pending && conf->barrier < RESYNC_DEPTH,
conf->resync_lock, );
conf->resync_lock);
spin_unlock_irq(&conf->resync_lock);
}
@@ -864,8 +864,7 @@ static void wait_barrier(struct r1conf *conf)
(conf->nr_pending &&
current->bio_list &&
!bio_list_empty(current->bio_list)),
conf->resync_lock,
);
conf->resync_lock);
conf->nr_waiting--;
}
conf->nr_pending++;
@@ -898,10 +897,10 @@ static void freeze_array(struct r1conf *conf)
spin_lock_irq(&conf->resync_lock);
conf->barrier++;
conf->nr_waiting++;
wait_event_lock_irq(conf->wait_barrier,
conf->nr_pending == conf->nr_queued+1,
conf->resync_lock,
flush_pending_writes(conf));
wait_event_lock_irq_cmd(conf->wait_barrier,
conf->nr_pending == conf->nr_queued+1,
conf->resync_lock,
flush_pending_writes(conf));
spin_unlock_irq(&conf->resync_lock);
}
static void unfreeze_array(struct r1conf *conf)

15
drivers/md/raid10.c
View File

@@ -952,7 +952,7 @@ static void raise_barrier(struct r10conf *conf, int force)
/* Wait until no block IO is waiting (unless 'force') */
wait_event_lock_irq(conf->wait_barrier, force || !conf->nr_waiting,
conf->resync_lock, );
conf->resync_lock);
/* block any new IO from starting */
conf->barrier++;
@@ -960,7 +960,7 @@ static void raise_barrier(struct r10conf *conf, int force)
/* Now wait for all pending IO to complete */
wait_event_lock_irq(conf->wait_barrier,
!conf->nr_pending && conf->barrier < RESYNC_DEPTH,
conf->resync_lock, );
conf->resync_lock);
spin_unlock_irq(&conf->resync_lock);
}
@@ -993,8 +993,7 @@ static void wait_barrier(struct r10conf *conf)
(conf->nr_pending &&
current->bio_list &&
!bio_list_empty(current->bio_list)),
conf->resync_lock,
);
conf->resync_lock);
conf->nr_waiting--;
}
conf->nr_pending++;
@@ -1027,10 +1026,10 @@ static void freeze_array(struct r10conf *conf)
spin_lock_irq(&conf->resync_lock);
conf->barrier++;
conf->nr_waiting++;
wait_event_lock_irq(conf->wait_barrier,
conf->nr_pending == conf->nr_queued+1,
conf->resync_lock,
flush_pending_writes(conf));
wait_event_lock_irq_cmd(conf->wait_barrier,
conf->nr_pending == conf->nr_queued+1,
conf->resync_lock,
flush_pending_writes(conf));
spin_unlock_irq(&conf->resync_lock);
}

12
drivers/md/raid5.c
View File

@@ -466,7 +466,7 @@ get_active_stripe(struct r5conf *conf, sector_t sector,
do {
wait_event_lock_irq(conf->wait_for_stripe,
conf->quiesce == 0 || noquiesce,
conf->device_lock, /* nothing */);
conf->device_lock);
sh = __find_stripe(conf, sector, conf->generation - previous);
if (!sh) {
if (!conf->inactive_blocked)
@@ -480,8 +480,7 @@ get_active_stripe(struct r5conf *conf, sector_t sector,
(atomic_read(&conf->active_stripes)
< (conf->max_nr_stripes *3/4)
|| !conf->inactive_blocked),
conf->device_lock,
);
conf->device_lock);
conf->inactive_blocked = 0;
} else
init_stripe(sh, sector, previous);
@@ -1646,8 +1645,7 @@ static int resize_stripes(struct r5conf *conf, int newsize)
spin_lock_irq(&conf->device_lock);
wait_event_lock_irq(conf->wait_for_stripe,
!list_empty(&conf->inactive_list),
conf->device_lock,
);
conf->device_lock);
osh = get_free_stripe(conf);
spin_unlock_irq(&conf->device_lock);
atomic_set(&nsh->count, 1);
@@ -4003,7 +4001,7 @@ static int chunk_aligned_read(struct mddev *mddev, struct bio * raid_bio)
spin_lock_irq(&conf->device_lock);
wait_event_lock_irq(conf->wait_for_stripe,
conf->quiesce == 0,
conf->device_lock, /* nothing */);
conf->device_lock);
atomic_inc(&conf->active_aligned_reads);
spin_unlock_irq(&conf->device_lock);
@@ -6095,7 +6093,7 @@ static void raid5_quiesce(struct mddev *mddev, int state)
wait_event_lock_irq(conf->wait_for_stripe,
atomic_read(&conf->active_stripes) == 0 &&
atomic_read(&conf->active_aligned_reads) == 0,
conf->device_lock, /* nothing */);
conf->device_lock);
conf->quiesce = 1;
spin_unlock_irq(&conf->device_lock);
/* allow reshape to continue */