From: Adrian Hunter Date: Wed, 20 Aug 2008 13:32:40 +0000 (+0300) Subject: UBIFS: always read hashed-key nodes under TNC mutex X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=761e29f3bb19b05bea55285dfdf2d28e001a63b8;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git UBIFS: always read hashed-key nodes under TNC mutex Leaf-nodes that have a hashed key are stored in the leaf-node-cache (LNC) which is protected by the TNC mutex. Consequently, when reading a leaf node with a hashed key (i.e. directory entries, xattr entries) the TNC mutex is always required. Signed-off-by: Adrian Hunter --- diff --git a/fs/ubifs/tnc.c b/fs/ubifs/tnc.c index e909f4a96443..4fbc5921688f 100644 --- a/fs/ubifs/tnc.c +++ b/fs/ubifs/tnc.c @@ -1498,7 +1498,6 @@ static int do_lookup_nm(struct ubifs_info *c, const union ubifs_key *key, { int found, n, err; struct ubifs_znode *znode; - struct ubifs_zbranch zbr; dbg_tnc("name '%.*s' key %s", nm->len, nm->name, DBGKEY(key)); mutex_lock(&c->tnc_mutex); @@ -1522,11 +1521,7 @@ static int do_lookup_nm(struct ubifs_info *c, const union ubifs_key *key, goto out_unlock; } - zbr = znode->zbranch[n]; - mutex_unlock(&c->tnc_mutex); - - err = tnc_read_node_nm(c, &zbr, node); - return err; + err = tnc_read_node_nm(c, &znode->zbranch[n], node); out_unlock: mutex_unlock(&c->tnc_mutex);