diff options
| author | Jan Kara <jack@suse.cz> | 2012-06-12 16:20:33 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-07-31 01:02:51 +0400 |
| commit | 4a55c1017b8dcfd0554734ce3f19374d5b522d59 (patch) | |
| tree | 11bb9456d121ff1cc0adad10da12b25083823a19 /fs/nfsd/nfs4recover.c | |
| parent | e7848683ae7ded0a4a8964122a47da9104a98337 (diff) | |
| download | linux-stable-4a55c1017b8dcfd0554734ce3f19374d5b522d59.tar.gz linux-stable-4a55c1017b8dcfd0554734ce3f19374d5b522d59.tar.bz2 linux-stable-4a55c1017b8dcfd0554734ce3f19374d5b522d59.zip | |
nfsd: Push mnt_want_write() outside of i_mutex
When mnt_want_write() starts to handle freezing it will get a full lock
semantics requiring proper lock ordering. So push mnt_want_write() call
consistently outside of i_mutex.
CC: linux-nfs@vger.kernel.org
CC: "J. Bruce Fields" <bfields@fieldses.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/nfsd/nfs4recover.c')
| -rw-r--r-- | fs/nfsd/nfs4recover.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c index 5ff0b7b9fc08..43295d45cc2b 100644 --- a/fs/nfsd/nfs4recover.c +++ b/fs/nfsd/nfs4recover.c @@ -154,6 +154,10 @@ nfsd4_create_clid_dir(struct nfs4_client *clp) if (status < 0) return; + status = mnt_want_write_file(rec_file); + if (status) + return; + dir = rec_file->f_path.dentry; /* lock the parent */ mutex_lock(&dir->d_inode->i_mutex); @@ -173,11 +177,7 @@ nfsd4_create_clid_dir(struct nfs4_client *clp) * as well be forgiving and just succeed silently. */ goto out_put; - status = mnt_want_write_file(rec_file); - if (status) - goto out_put; status = vfs_mkdir(dir->d_inode, dentry, S_IRWXU); - mnt_drop_write_file(rec_file); out_put: dput(dentry); out_unlock: @@ -189,6 +189,7 @@ out_unlock: " (err %d); please check that %s exists" " and is writeable", status, user_recovery_dirname); + mnt_drop_write_file(rec_file); nfs4_reset_creds(original_cred); } |