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| author | Christoph Hellwig <hch@infradead.org> | 2010-10-13 11:56:37 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2010-10-25 21:26:13 -0400 |
| commit | 0461ee2616252f1f6cec628990fa913a4282dcf7 (patch) | |
| tree | 05169e74aeccac9f2d35caeacc9dfa12e25b13c8 /fs/exportfs | |
| parent | 3825bdb7ed920845961f32f364454bee5f469abb (diff) | |
| download | lwn-0461ee2616252f1f6cec628990fa913a4282dcf7.tar.gz lwn-0461ee2616252f1f6cec628990fa913a4282dcf7.zip | |
exportfs: use dget_parent
Use dget_parent instead of opencoding it. This simplifies the code, but
more importanly prepares for the more complicated locking for a parent
dget in the dcache scale patch series.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/exportfs')
| -rw-r--r-- | fs/exportfs/expfs.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/fs/exportfs/expfs.c b/fs/exportfs/expfs.c index e9e175949a63..51b304056f10 100644 --- a/fs/exportfs/expfs.c +++ b/fs/exportfs/expfs.c @@ -74,21 +74,20 @@ static struct dentry * find_disconnected_root(struct dentry *dentry) { dget(dentry); - spin_lock(&dentry->d_lock); - while (!IS_ROOT(dentry) && - (dentry->d_parent->d_flags & DCACHE_DISCONNECTED)) { - struct dentry *parent = dentry->d_parent; - dget(parent); - spin_unlock(&dentry->d_lock); + while (!IS_ROOT(dentry)) { + struct dentry *parent = dget_parent(dentry); + + if (!(parent->d_flags & DCACHE_DISCONNECTED)) { + dput(parent); + break; + } + dput(dentry); dentry = parent; - spin_lock(&dentry->d_lock); } - spin_unlock(&dentry->d_lock); return dentry; } - /* * Make sure target_dir is fully connected to the dentry tree. * |