Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755933AbbEEFaI (ORCPT ); Tue, 5 May 2015 01:30:08 -0400 Received: from zeniv.linux.org.uk ([195.92.253.2]:40092 "EHLO ZenIV.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755687AbbEEFXU (ORCPT ); Tue, 5 May 2015 01:23:20 -0400 From: Al Viro To: Linus Torvalds Cc: Neil Brown , Christoph Hellwig , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH 10/79] jffs2: switch to simple_follow_link() Date: Tue, 5 May 2015 06:21:44 +0100 Message-Id: <1430803373-4948-10-git-send-email-viro@ZenIV.linux.org.uk> X-Mailer: git-send-email 1.7.7.6 In-Reply-To: <20150505052205.GS889@ZenIV.linux.org.uk> References: <20150505052205.GS889@ZenIV.linux.org.uk> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3107 Lines: 105 From: Al Viro Signed-off-by: Al Viro --- fs/jffs2/dir.c | 1 + fs/jffs2/fs.c | 1 + fs/jffs2/symlink.c | 45 +-------------------------------------------- 3 files changed, 3 insertions(+), 44 deletions(-) diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c index 1ba5c97..8118002 100644 --- a/fs/jffs2/dir.c +++ b/fs/jffs2/dir.c @@ -354,6 +354,7 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char ret = -ENOMEM; goto fail; } + inode->i_link = f->target; jffs2_dbg(1, "%s(): symlink's target '%s' cached\n", __func__, (char *)f->target); diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c index fe5ea08..60d86e8 100644 --- a/fs/jffs2/fs.c +++ b/fs/jffs2/fs.c @@ -294,6 +294,7 @@ struct inode *jffs2_iget(struct super_block *sb, unsigned long ino) case S_IFLNK: inode->i_op = &jffs2_symlink_inode_operations; + inode->i_link = f->target; break; case S_IFDIR: diff --git a/fs/jffs2/symlink.c b/fs/jffs2/symlink.c index 1fefa25..8ce2f24 100644 --- a/fs/jffs2/symlink.c +++ b/fs/jffs2/symlink.c @@ -9,58 +9,15 @@ * */ -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include -#include -#include #include "nodelist.h" -static void *jffs2_follow_link(struct dentry *dentry, struct nameidata *nd); - const struct inode_operations jffs2_symlink_inode_operations = { .readlink = generic_readlink, - .follow_link = jffs2_follow_link, + .follow_link = simple_follow_link, .setattr = jffs2_setattr, .setxattr = jffs2_setxattr, .getxattr = jffs2_getxattr, .listxattr = jffs2_listxattr, .removexattr = jffs2_removexattr }; - -static void *jffs2_follow_link(struct dentry *dentry, struct nameidata *nd) -{ - struct jffs2_inode_info *f = JFFS2_INODE_INFO(d_inode(dentry)); - char *p = (char *)f->target; - - /* - * We don't acquire the f->sem mutex here since the only data we - * use is f->target. - * - * 1. If we are here the inode has already built and f->target has - * to point to the target path. - * 2. Nobody uses f->target (if the inode is symlink's inode). The - * exception is inode freeing function which frees f->target. But - * it can't be called while we are here and before VFS has - * stopped using our f->target string which we provide by means of - * nd_set_link() call. - */ - - if (!p) { - pr_err("%s(): can't find symlink target\n", __func__); - p = ERR_PTR(-EIO); - } - jffs2_dbg(1, "%s(): target path is '%s'\n", - __func__, (char *)f->target); - - nd_set_link(nd, p); - - /* - * We will unlock the f->sem mutex but VFS will use the f->target string. This is safe - * since the only way that may cause f->target to be changed is iput() operation. - * But VFS will not use f->target after iput() has been called. - */ - return NULL; -} - -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/