debug_fill_super():
return directly if failed to allocate debugfs_fs_info.
__create_file():
remove redundant initialization.
__debugfs_remove():
remove redundant check.
debugfs_positive() already checked dentry->inode is not NULL.
Signed-off-by: Yan Hong <clouds....@gmail.com>
---
fs/debugfs/inode.c | 37 ++++++++++++++++---------------------
1 file changed, 16 insertions(+), 21 deletions(-)
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index b607d92..58eadc1 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -262,10 +262,8 @@ static int debug_fill_super(struct super_block *sb, void
*data, int silent)
fsi = kzalloc(sizeof(struct debugfs_fs_info), GFP_KERNEL);
sb->s_fs_info = fsi;
- if (!fsi) {
- err = -ENOMEM;
- goto fail;
- }
+ if (!fsi)
+ return -ENOMEM;
err = debugfs_parse_options(data, &fsi->mount_opts);
if (err)
@@ -323,7 +321,6 @@ static struct dentry *__create_file(const char *name,
umode_t mode,
if (!parent)
parent = debugfs_mount->mnt_root;
- dentry = NULL;
mutex_lock(&parent->d_inode->i_mutex);
dentry = lookup_one_len(name, parent, strlen(name));
if (!IS_ERR(dentry)) {
@@ -466,23 +463,21 @@ static int __debugfs_remove(struct dentry *dentry, struct
dentry *parent)
int ret = 0;
if (debugfs_positive(dentry)) {
- if (dentry->d_inode) {
- dget(dentry);
- switch (dentry->d_inode->i_mode & S_IFMT) {
- case S_IFDIR:
- ret = simple_rmdir(parent->d_inode, dentry);
- break;
- case S_IFLNK:
- kfree(dentry->d_inode->i_private);
- /* fall through */
- default:
- simple_unlink(parent->d_inode, dentry);
- break;
- }
- if (!ret)
- d_delete(dentry);
- dput(dentry);
+ dget(dentry);
+ switch (dentry->d_inode->i_mode & S_IFMT) {
+ case S_IFDIR:
+ ret = simple_rmdir(parent->d_inode, dentry);
+ break;
+ case S_IFLNK:
+ kfree(dentry->d_inode->i_private);
+ /* fall through */
+ default:
+ simple_unlink(parent->d_inode, dentry);
+ break;
}
+ if (!ret)
+ d_delete(dentry);
+ dput(dentry);
}
return ret;
}
--
1.7.9.5
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