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| author | Pierre Morel <pmorel@linux.vnet.ibm.com> | 2016-10-04 10:53:40 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-10-05 14:35:13 -0600 |
| commit | 997198ba1ed691c09457120576c27dbd953d0557 (patch) | |
| tree | 142a251ae87c22234e8180f597e08dcb58d51ea3 /fs/block_dev.c | |
| parent | 1a6fe74dfd1bb10afb41cbbbdc14890604be42a6 (diff) | |
| download | op-kernel-dev-997198ba1ed691c09457120576c27dbd953d0557.zip op-kernel-dev-997198ba1ed691c09457120576c27dbd953d0557.tar.gz | |
fs/block_dev.c: return the right error in thaw_bdev()
When triggering thaw-filesystems via magic sysrq, the system enters a
loop in do_thaw_one(), as thaw_bdev() still returns success if
bd_fsfreeze_count == 0. To fix this, let thaw_bdev() always return
error (and simplify the code a bit at the same time).
Reviewed-by: Eric Farman <farman@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'fs/block_dev.c')
| -rw-r--r-- | fs/block_dev.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index a516568..376e4e4 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -299,14 +299,11 @@ int thaw_bdev(struct block_device *bdev, struct super_block *sb) error = sb->s_op->thaw_super(sb); else error = thaw_super(sb); - if (error) { + if (error) bdev->bd_fsfreeze_count++; - mutex_unlock(&bdev->bd_fsfreeze_mutex); - return error; - } out: mutex_unlock(&bdev->bd_fsfreeze_mutex); - return 0; + return error; } EXPORT_SYMBOL(thaw_bdev); |
