[PATCH] mark struct file_operations const 6

[karo-tx-linux.git] / fs / gfs2 / ops_dentry.c

diff --git a/fs/gfs2/ops_dentry.c b/fs/gfs2/ops_dentry.c
index d355899585d822b800d15f2d8826734bc2d02a6f..9187eb174b43a0c91547bbbe36760a8cd9d65789 100644 (file)
--- a/fs/gfs2/ops_dentry.c
+++ b/fs/gfs2/ops_dentry.c
@@ -46,6 +46,7 @@ static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd)
        struct gfs2_inum_host inum;
        unsigned int type;
        int error;
+       int had_lock=0;
 
        if (inode && is_bad_inode(inode))
                goto invalid;
@@ -53,9 +54,12 @@ static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd)
        if (sdp->sd_args.ar_localcaching)
                goto valid;
 
-       error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh);
-       if (error)
-               goto fail;
+       had_lock = gfs2_glock_is_locked_by_me(dip->i_gl);
+       if (!had_lock) {
+               error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh);
+               if (error)
+                       goto fail;
+       } 
 
        error = gfs2_dir_search(parent->d_inode, &dentry->d_name, &inum, &type);
        switch (error) {
@@ -82,13 +86,15 @@ static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd)
        }
 
 valid_gunlock:
-       gfs2_glock_dq_uninit(&d_gh);
+       if (!had_lock)
+               gfs2_glock_dq_uninit(&d_gh);
 valid:
        dput(parent);
        return 1;
 
 invalid_gunlock:
-       gfs2_glock_dq_uninit(&d_gh);
+       if (!had_lock)
+               gfs2_glock_dq_uninit(&d_gh);
 invalid:
        if (inode && S_ISDIR(inode->i_mode)) {
                if (have_submounts(dentry))