X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fllite%2Fxattr_cache.c;h=c0ef7df204170672b310a13aad8a314ba06594fd;hp=d572f735d28fdccafa91b62c327c7ee5b1c3b23b;hb=14b37c763c5751faf18d00287c16bdcbe0f8d542;hpb=06e586016d3acc490f922e43e3aee6b8112a2803

diff --git a/lustre/llite/xattr_cache.c b/lustre/llite/xattr_cache.c
index d572f73..c0ef7df 100644
--- a/lustre/llite/xattr_cache.c
+++ b/lustre/llite/xattr_cache.c
@@ -315,6 +315,42 @@ int ll_xattr_cache_destroy(struct inode *inode)
 }
 
 /**
+ * ll_xattr_cache_empty - empty xattr cache for @ino
+ *
+ * Similar to ll_xattr_cache_destroy(), but preserves encryption context.
+ * So only LLIF_XATTR_CACHE_FILLED flag is cleared, but not LLIF_XATTR_CACHE.
+ */
+int ll_xattr_cache_empty(struct inode *inode)
+{
+	struct ll_inode_info *lli = ll_i2info(inode);
+	struct ll_xattr_entry *entry, *n;
+
+	ENTRY;
+
+	down_write(&lli->lli_xattrs_list_rwsem);
+	if (!ll_xattr_cache_valid(lli) ||
+	    !ll_xattr_cache_filled(lli))
+		GOTO(out_empty, 0);
+
+	list_for_each_entry_safe(entry, n, &lli->lli_xattrs, xe_list) {
+		if (strcmp(entry->xe_name,
+			   LL_XATTR_NAME_ENCRYPTION_CONTEXT) == 0)
+			continue;
+
+		CDEBUG(D_CACHE, "delete: %s\n", entry->xe_name);
+		list_del(&entry->xe_list);
+		OBD_FREE(entry->xe_name, entry->xe_namelen);
+		OBD_FREE(entry->xe_value, entry->xe_vallen);
+		OBD_SLAB_FREE_PTR(entry, xattr_kmem);
+	}
+	clear_bit(LLIF_XATTR_CACHE_FILLED, &lli->lli_flags);
+
+out_empty:
+	up_write(&lli->lli_xattrs_list_rwsem);
+	RETURN(0);
+}
+
+/**
  * Match or enqueue a PR lock.
  *
  * Find or request an LDLM lock with xattr data.