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-rw-r--r--fs/dcache.c38
1 files changed, 4 insertions, 34 deletions
diff --git a/fs/dcache.c b/fs/dcache.c
index 1f8e6acb0ea4..8150e4e9e88b 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -650,9 +650,8 @@ EXPORT_SYMBOL(dput);
* @dentry: dentry to invalidate
*
* Try to invalidate the dentry if it turns out to be
- * possible. If there are other dentries that can be
- * reached through this one we can't delete it and we
- * return -EBUSY. On success we return 0.
+ * possible. If there are reasons not to delete it
+ * return -EBUSY. On success return 0.
*
* no dcache lock.
*/
@@ -667,38 +666,9 @@ int d_invalidate(struct dentry * dentry)
spin_unlock(&dentry->d_lock);
return 0;
}
- /*
- * Check whether to do a partial shrink_dcache
- * to get rid of unused child entries.
- */
- if (!list_empty(&dentry->d_subdirs)) {
- spin_unlock(&dentry->d_lock);
- shrink_dcache_parent(dentry);
- spin_lock(&dentry->d_lock);
- }
-
- /*
- * Somebody else still using it?
- *
- * If it's a directory, we can't drop it
- * for fear of somebody re-populating it
- * with children (even though dropping it
- * would make it unreachable from the root,
- * we might still populate it if it was a
- * working directory or similar).
- * We also need to leave mountpoints alone,
- * directory or not.
- */
- if (dentry->d_lockref.count > 1 && dentry->d_inode) {
- if (S_ISDIR(dentry->d_inode->i_mode) || d_mountpoint(dentry)) {
- spin_unlock(&dentry->d_lock);
- return -EBUSY;
- }
- }
-
- __d_drop(dentry);
spin_unlock(&dentry->d_lock);
- return 0;
+
+ return check_submounts_and_drop(dentry);
}
EXPORT_SYMBOL(d_invalidate);