[prev in list] [next in list] [prev in thread] [next in thread]
List: linux-fsdevel
Subject: [PATCH 22/26] sysfs: Normalize error handling in sysfs_fill_inode
From: "Eric W. Biederman" <ebiederm () xmission ! com>
Date: 2009-05-29 20:19:32
Message-ID: 1243628376-22905-22-git-send-email-ebiederm () xmission ! com
[Download RAW message or body]
From: Eric W. Biederman <ebiederm@xmission.com>
Use a single error exit path instead of doing whatever
is the required cleanup at each point we find the error.
Ultimately this should make the code more maintainable.
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
---
fs/sysfs/mount.c | 16 +++++++++++-----
1 files changed, 11 insertions(+), 5 deletions(-)
diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c
index 0cb1088..1dd023a 100644
--- a/fs/sysfs/mount.c
+++ b/fs/sysfs/mount.c
@@ -41,8 +41,9 @@ struct sysfs_dirent sysfs_root = {
static int sysfs_fill_super(struct super_block *sb, void *data, int silent)
{
- struct inode *inode;
- struct dentry *root;
+ struct inode *inode = NULL;
+ struct dentry *root = NULL;
+ int error;
sb->s_blocksize = PAGE_CACHE_SIZE;
sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
@@ -51,24 +52,29 @@ static int sysfs_fill_super(struct super_block *sb, void *data, int silent)
sb->s_time_gran = 1;
/* get root inode, initialize and unlock it */
+ error = -ENOMEM;
mutex_lock(&sysfs_mutex);
inode = sysfs_get_inode(sb, &sysfs_root);
mutex_unlock(&sysfs_mutex);
if (!inode) {
pr_debug("sysfs: could not get root inode\n");
- return -ENOMEM;
+ goto err_out;
}
/* instantiate and link root dentry */
+ error = -ENOMEM;
root = d_alloc_root(inode);
if (!root) {
pr_debug("%s: could not get root dentry!\n",__func__);
- iput(inode);
- return -ENOMEM;
+ goto err_out;
}
root->d_fsdata = &sysfs_root;
sb->s_root = root;
return 0;
+err_out:
+ dput(root);
+ iput(inode);
+ return error;
}
static int sysfs_get_sb(struct file_system_type *fs_type,
--
1.6.3.1.54.g99dd.dirty
--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
[prev in list] [next in list] [prev in thread] [next in thread]
Configure |
About |
News |
Add a list |
Sponsored by KoreLogic