diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-05-26 06:05:12 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-05-26 06:13:25 +0200 |
| commit | 002354112f1e3cc7400ef48b853aefb90e801588 (patch) | |
| tree | 42bc0b17b008fc65b359a06e6f991b5247e10705 /fs/btrfs | |
| parent | add down_write_killable_nested() (diff) | |
| download | linux-002354112f1e3cc7400ef48b853aefb90e801588.tar.xz linux-002354112f1e3cc7400ef48b853aefb90e801588.zip | |
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.c | 18 |
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); |