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authorAl Viro <viro@zeniv.linux.org.uk>2016-05-26 00:05:12 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2016-05-26 00:13:25 -0400
commit002354112f1e3cc7400ef48b853aefb90e801588 (patch)
tree42bc0b17b008fc65b359a06e6f991b5247e10705 /fs/btrfs
parent887bddfa90c79957d61067cd54a10087be0c8b23 (diff)
restore killability of old mutex_lock_killable(&inode->i_mutex) users
The ones that are taking it exclusive, that is... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/ioctl.c18
1 files changed, 7 insertions, 11 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 4e700694b741..c24473fac2fb 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -846,11 +846,9 @@ static noinline int btrfs_mksubvol(struct path *parent,
struct dentry *dentry;
int error;
- inode_lock_nested(dir, I_MUTEX_PARENT);
- // XXX: should've been
- // mutex_lock_killable_nested(&dir->i_mutex, I_MUTEX_PARENT);
- // if (error == -EINTR)
- // return error;
+ error = down_write_killable_nested(&dir->i_rwsem, I_MUTEX_PARENT);
+ if (error == -EINTR)
+ return error;
dentry = lookup_one_len(name, parent->dentry, namelen);
error = PTR_ERR(dentry);
@@ -2377,11 +2375,9 @@ static noinline int btrfs_ioctl_snap_destroy(struct file *file,
goto out;
- inode_lock_nested(dir, I_MUTEX_PARENT);
- // XXX: should've been
- // err = mutex_lock_killable_nested(&dir->i_mutex, I_MUTEX_PARENT);
- // if (err == -EINTR)
- // goto out_drop_write;
+ err = down_write_killable_nested(&dir->i_rwsem, I_MUTEX_PARENT);
+ if (err == -EINTR)
+ goto out_drop_write;
dentry = lookup_one_len(vol_args->name, parent, namelen);
if (IS_ERR(dentry)) {
err = PTR_ERR(dentry);
@@ -2571,7 +2567,7 @@ out_dput:
dput(dentry);
out_unlock_dir:
inode_unlock(dir);
-//out_drop_write:
+out_drop_write:
mnt_drop_write_file(file);
out:
kfree(vol_args);