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| author | Chris Mason <chris.mason@oracle.com> | 2011-05-23 14:37:47 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2011-05-23 14:37:47 -0400 |
| commit | d6c0cb379c5198487e4ac124728cbb2346d63b1f (patch) | |
| tree | 167a97ac58c7a2fbf7c4e94b6abbfe1e03af014a /fs/btrfs/disk-io.c | |
| parent | 8e531cdfeb75269c6c5aae33651cca39707848da (diff) | |
| parent | 1f78160ce1b1b8e657e2248118c4d91f881763f0 (diff) | |
| download | linux-d6c0cb379c5198487e4ac124728cbb2346d63b1f.tar.bz2 | |
Merge branch 'cleanups_and_fixes' into inode_numbers
Conflicts:
fs/btrfs/tree-log.c
fs/btrfs/volumes.c
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/disk-io.c')
| -rw-r--r-- | fs/btrfs/disk-io.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 29a2475b9b14..16d335b342a2 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -1053,7 +1053,6 @@ static int __setup_root(u32 nodesize, u32 leafsize, u32 sectorsize, INIT_LIST_HEAD(&root->dirty_list); INIT_LIST_HEAD(&root->orphan_list); INIT_LIST_HEAD(&root->root_list); - spin_lock_init(&root->node_lock); spin_lock_init(&root->orphan_lock); spin_lock_init(&root->inode_lock); spin_lock_init(&root->accounting_lock); @@ -1363,7 +1362,8 @@ static int btrfs_congested_fn(void *congested_data, int bdi_bits) struct btrfs_device *device; struct backing_dev_info *bdi; - list_for_each_entry(device, &info->fs_devices->devices, dev_list) { + rcu_read_lock(); + list_for_each_entry_rcu(device, &info->fs_devices->devices, dev_list) { if (!device->bdev) continue; bdi = blk_get_backing_dev_info(device->bdev); @@ -1372,6 +1372,7 @@ static int btrfs_congested_fn(void *congested_data, int bdi_bits) break; } } + rcu_read_unlock(); return ret; } @@ -2305,9 +2306,9 @@ int write_all_supers(struct btrfs_root *root, int max_mirrors) sb = &root->fs_info->super_for_commit; dev_item = &sb->dev_item; - mutex_lock(&root->fs_info->fs_devices->device_list_mutex); + rcu_read_lock(); head = &root->fs_info->fs_devices->devices; - list_for_each_entry(dev, head, dev_list) { + list_for_each_entry_rcu(dev, head, dev_list) { if (!dev->bdev) { total_errors++; continue; @@ -2340,7 +2341,7 @@ int write_all_supers(struct btrfs_root *root, int max_mirrors) } total_errors = 0; - list_for_each_entry(dev, head, dev_list) { + list_for_each_entry_rcu(dev, head, dev_list) { if (!dev->bdev) continue; if (!dev->in_fs_metadata || !dev->writeable) @@ -2350,7 +2351,7 @@ int write_all_supers(struct btrfs_root *root, int max_mirrors) if (ret) total_errors++; } - mutex_unlock(&root->fs_info->fs_devices->device_list_mutex); + rcu_read_unlock(); if (total_errors > max_errors) { printk(KERN_ERR "btrfs: %d errors while writing supers\n", total_errors); |