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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-11 02:22:42 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-11 02:22:42 +0400 |
| commit | 2f9e825d3e0e2b407ae8f082de5c00afcf7378fb (patch) | |
| tree | f8b3ee40674ce4acd5508a0a0bf52a30904caf6c /drivers/block/loop.c | |
| parent | 7ae0dea900b027cd90e8a3e14deca9a19e17638b (diff) | |
| parent | de75d60d5ea235e6e09f4962ab22541ce0fe176a (diff) | |
| download | linux-2f9e825d3e0e2b407ae8f082de5c00afcf7378fb.tar.xz | |
Merge branch 'for-2.6.36' of git://git.kernel.dk/linux-2.6-block
* 'for-2.6.36' of git://git.kernel.dk/linux-2.6-block: (149 commits)
block: make sure that REQ_* types are seen even with CONFIG_BLOCK=n
xen-blkfront: fix missing out label
blkdev: fix blkdev_issue_zeroout return value
block: update request stacking methods to support discards
block: fix missing export of blk_types.h
writeback: fix bad _bh spinlock nesting
drbd: revert "delay probes", feature is being re-implemented differently
drbd: Initialize all members of sync_conf to their defaults [Bugz 315]
drbd: Disable delay probes for the upcomming release
writeback: cleanup bdi_register
writeback: add new tracepoints
writeback: remove unnecessary init_timer call
writeback: optimize periodic bdi thread wakeups
writeback: prevent unnecessary bdi threads wakeups
writeback: move bdi threads exiting logic to the forker thread
writeback: restructure bdi forker loop a little
writeback: move last_active to bdi
writeback: do not remove bdi from bdi_list
writeback: simplify bdi code a little
writeback: do not lose wake-ups in bdi threads
...
Fixed up pretty trivial conflicts in drivers/block/virtio_blk.c and
drivers/scsi/scsi_error.c as per Jens.
Diffstat (limited to 'drivers/block/loop.c')
| -rw-r--r-- | drivers/block/loop.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/block/loop.c b/drivers/block/loop.c index 6120922f459f..f3c636d23718 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -67,6 +67,7 @@ #include <linux/compat.h> #include <linux/suspend.h> #include <linux/freezer.h> +#include <linux/smp_lock.h> #include <linux/writeback.h> #include <linux/buffer_head.h> /* for invalidate_bdev() */ #include <linux/completion.h> @@ -476,7 +477,7 @@ static int do_bio_filebacked(struct loop_device *lo, struct bio *bio) pos = ((loff_t) bio->bi_sector << 9) + lo->lo_offset; if (bio_rw(bio) == WRITE) { - bool barrier = bio_rw_flagged(bio, BIO_RW_BARRIER); + bool barrier = (bio->bi_rw & REQ_HARDBARRIER); struct file *file = lo->lo_backing_file; if (barrier) { @@ -831,7 +832,7 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode, lo->lo_queue->unplug_fn = loop_unplug; if (!(lo_flags & LO_FLAGS_READ_ONLY) && file->f_op->fsync) - blk_queue_ordered(lo->lo_queue, QUEUE_ORDERED_DRAIN, NULL); + blk_queue_ordered(lo->lo_queue, QUEUE_ORDERED_DRAIN); set_capacity(lo->lo_disk, size); bd_set_size(bdev, size << 9); @@ -1408,9 +1409,11 @@ static int lo_open(struct block_device *bdev, fmode_t mode) { struct loop_device *lo = bdev->bd_disk->private_data; + lock_kernel(); mutex_lock(&lo->lo_ctl_mutex); lo->lo_refcnt++; mutex_unlock(&lo->lo_ctl_mutex); + unlock_kernel(); return 0; } @@ -1420,6 +1423,7 @@ static int lo_release(struct gendisk *disk, fmode_t mode) struct loop_device *lo = disk->private_data; int err; + lock_kernel(); mutex_lock(&lo->lo_ctl_mutex); if (--lo->lo_refcnt) @@ -1444,6 +1448,7 @@ static int lo_release(struct gendisk *disk, fmode_t mode) out: mutex_unlock(&lo->lo_ctl_mutex); out_unlocked: + lock_kernel(); return 0; } |