From 68adb0af51ebccb72ffb14d49cb8121b1afc4259 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 10 Aug 2006 17:51:46 -0400 Subject: [PATCH] SUNRPC: rpc_unlink() must check for unhashed dentries A prior call to rpc_depopulate() by rpc_rmdir() on the parent directory may have already called simple_unlink() on this entry. Add the same check to rpc_rmdir(). Also remove a redundant call to rpc_close_pipes() in rpc_rmdir. Signed-off-by: Trond Myklebust (cherry picked from 0bbfb9d20f6437c4031aa3bf9b4d311a053e58e3 commit) --- net/sunrpc/rpc_pipe.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c index 9c355e1ae61..0b1a1ac8a4b 100644 --- a/net/sunrpc/rpc_pipe.c +++ b/net/sunrpc/rpc_pipe.c @@ -539,6 +539,7 @@ repeat: rpc_close_pipes(dentry->d_inode); simple_unlink(dir, dentry); } + inode_dir_notify(dir, DN_DELETE); dput(dentry); } while (n); goto repeat; @@ -610,8 +611,8 @@ __rpc_rmdir(struct inode *dir, struct dentry *dentry) int error; shrink_dcache_parent(dentry); - if (dentry->d_inode) - rpc_close_pipes(dentry->d_inode); + if (d_unhashed(dentry)) + return 0; if ((error = simple_rmdir(dir, dentry)) != 0) return error; if (!error) { @@ -747,13 +748,15 @@ rpc_unlink(struct dentry *dentry) parent = dget_parent(dentry); dir = parent->d_inode; mutex_lock_nested(&dir->i_mutex, I_MUTEX_PARENT); - d_drop(dentry); - if (dentry->d_inode) { - rpc_close_pipes(dentry->d_inode); - error = simple_unlink(dir, dentry); + if (!d_unhashed(dentry)) { + d_drop(dentry); + if (dentry->d_inode) { + rpc_close_pipes(dentry->d_inode); + error = simple_unlink(dir, dentry); + } + inode_dir_notify(dir, DN_DELETE); } dput(dentry); - inode_dir_notify(dir, DN_DELETE); mutex_unlock(&dir->i_mutex); dput(parent); return error; -- 2.20.1