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configfs: Make configfs_new_dirent() return error code instead of NULL 

This patch makes configfs_new_dirent return negative error code instead of NULL,
which will be useful in the next patch to differentiate ENOMEM from ENOENT.

Signed-off-by: Louis Rilling <Louis.Rilling@kerlabs.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
This commit is contained in:
Louis Rilling 2008-06-16 19:01:00 +02:00 committed by Mark Fasheh
parent 5301a77da2
commit 107ed40bd0
1 changed files with 5 additions and 4 deletions
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9
fs/configfs/dir.c
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@ -30,6 +30,7 @@
#include <linux/mount.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/configfs.h>
#include "configfs_internal.h"
@ -83,7 +84,7 @@ static struct configfs_dirent *configfs_new_dirent(struct configfs_dirent * pare
sd = kmem_cache_zalloc(configfs_dir_cachep, GFP_KERNEL);
if (!sd)
return NULL;
return ERR_PTR(-ENOMEM);
atomic_set(&sd->s_count, 1);
INIT_LIST_HEAD(&sd->s_links);
@ -129,8 +130,8 @@ int configfs_make_dirent(struct configfs_dirent * parent_sd,
struct configfs_dirent * sd;
sd = configfs_new_dirent(parent_sd, element);
if (!sd)
return -ENOMEM;
if (IS_ERR(sd))
return PTR_ERR(sd);
sd->s_mode = mode;
sd->s_type = type;
@ -1277,7 +1278,7 @@ static int configfs_dir_open(struct inode *inode, struct file *file)
file->private_data = configfs_new_dirent(parent_sd, NULL);
mutex_unlock(&dentry->d_inode->i_mutex);
return file->private_data ? 0 : -ENOMEM;
return IS_ERR(file->private_data) ? PTR_ERR(file->private_data) : 0;
}