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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs 

Pull btrfs fixes from Chris Mason:
 "We have two more fixes in my for-linus branch.

  I was hoping to also include a fix for a btrfs deadlock with
  compression enabled, but we're still nailing that one down"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  btrfs: test for valid bdev before kobj removal in btrfs_rm_device
  Btrfs: fix abnormal long waiting in fsync
This commit is contained in:
Linus Torvalds 2014-07-20 20:21:05 -07:00
parent 90d51d5606 0bfaa9c5cb
commit da83fc6e0f
2 changed files with 15 additions and 4 deletions
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11
fs/btrfs/ordered-data.c
View File

@ -484,8 +484,19 @@ void btrfs_wait_logged_extents(struct btrfs_root *log, u64 transid)
log_list);
list_del_init(&ordered->log_list);
spin_unlock_irq(&log->log_extents_lock[index]);
if (!test_bit(BTRFS_ORDERED_IO_DONE, &ordered->flags) &&
!test_bit(BTRFS_ORDERED_DIRECT, &ordered->flags)) {
struct inode *inode = ordered->inode;
u64 start = ordered->file_offset;
u64 end = ordered->file_offset + ordered->len - 1;
WARN_ON(!inode);
filemap_fdatawrite_range(inode->i_mapping, start, end);
}
wait_event(ordered->wait, test_bit(BTRFS_ORDERED_IO_DONE,
&ordered->flags));
btrfs_put_ordered_extent(ordered);
spin_lock_irq(&log->log_extents_lock[index]);
}

8
fs/btrfs/volumes.c
View File

@ -1680,11 +1680,11 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path)
if (device->bdev == root->fs_info->fs_devices->latest_bdev)
root->fs_info->fs_devices->latest_bdev = next_device->bdev;
if (device->bdev)
if (device->bdev) {
device->fs_devices->open_devices--;
/* remove sysfs entry */
btrfs_kobj_rm_device(root->fs_info, device);
/* remove sysfs entry */
btrfs_kobj_rm_device(root->fs_info, device);
}
call_rcu(&device->rcu, free_device);