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authorLinus Torvalds <torvalds@linux-foundation.org>2009-01-08 14:03:34 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-08 14:03:34 -0800
commit894bcdfb1a40a7c5032242c380b956aab106e05d (patch)
treecb5d34da6a7f524bb3188be539422896f2427405 /fs
parenta419df8a0ff01b6694cebc8885778f854165d17d (diff)
parent4044ba58dd15cb01797c4fd034f39ef4a75f7cc3 (diff)
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Merge branch 'for-linus' of git://neil.brown.name/md
* 'for-linus' of git://neil.brown.name/md: md: don't retry recovery of raid1 that fails due to error on source drive. md: Allow md devices to be created by name. md: make devices disappear when they are no longer needed. md: centralise all freeing of an 'mddev' in 'md_free' md: move allocation of ->queue from mddev_find to md_probe md: need another print_sb for mdp_superblock_1 md: use list_for_each_entry macro directly md: raid0: make hash_spacing and preshift sector-based. md: raid0: Represent the size of strip zones in sectors. md: raid0 create_strip_zones(): Add KERN_INFO/KERN_ERR to printk's. md: raid0 create_strip_zones(): Make two local variables sector-based. md: raid0: Represent zone->zone_offset in sectors. md: raid0: Represent device offset in sectors. md: raid0_make_request(): Replace local variable block by sector. md: raid0_make_request(): Remove local variable chunk_size. md: raid0_make_request(): Replace chunksize_bits by chunksect_bits. md: use sysfs_notify_dirent to notify changes to md/sync_action. md: fix bitmap-on-external-file bug.
Diffstat (limited to 'fs')
-rw-r--r--fs/block_dev.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c
index b957717e25a..8ebbfdf708c 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1005,6 +1005,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
}
lock_kernel();
+ restart:
ret = -ENXIO;
disk = get_gendisk(bdev->bd_dev, &partno);
@@ -1025,6 +1026,19 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
if (disk->fops->open) {
ret = disk->fops->open(bdev, mode);
+ if (ret == -ERESTARTSYS) {
+ /* Lost a race with 'disk' being
+ * deleted, try again.
+ * See md.c
+ */
+ disk_put_part(bdev->bd_part);
+ bdev->bd_part = NULL;
+ module_put(disk->fops->owner);
+ put_disk(disk);
+ bdev->bd_disk = NULL;
+ mutex_unlock(&bdev->bd_mutex);
+ goto restart;
+ }
if (ret)
goto out_clear;
}