f2fs: reorganize f2fs_setxattr

make use of F2FS_NAME_LEN for name length checking,
change return conditions at few places, by assigning
storing the errorvalue in 'error' and making a common
exit path.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c
index 8038c04..3bfea80 100644 (file)
--- a/fs/f2fs/xattr.c
+++ b/fs/f2fs/xattr.c
@@ -310,12 +310,13 @@ int f2fs_setxattr(struct inode *inode, int name_index, const char *name,
 
        if (name == NULL)
                return -EINVAL;
-       name_len = strlen(name);
 
        if (value == NULL)
                value_len = 0;
 
-       if (name_len > 255 || value_len > MAX_VALUE_LEN)
+       name_len = strlen(name);
+
+       if (name_len > F2FS_NAME_LEN || value_len > MAX_VALUE_LEN)
                return -ERANGE;
 
        f2fs_balance_fs(sbi);
@@ -326,8 +327,8 @@ int f2fs_setxattr(struct inode *inode, int name_index, const char *name,
                struct dnode_of_data dn;
 
                if (!alloc_nid(sbi, &fi->i_xattr_nid)) {
-                       mutex_unlock_op(sbi, NODE_NEW);
-                       return -ENOSPC;
+                       error = -ENOSPC;
+                       goto exit;
                }
                set_new_dnode(&dn, inode, NULL, NULL, fi->i_xattr_nid);
                mark_inode_dirty(inode);
@@ -336,8 +337,8 @@ int f2fs_setxattr(struct inode *inode, int name_index, const char *name,
                if (IS_ERR(page)) {
                        alloc_nid_failed(sbi, fi->i_xattr_nid);
                        fi->i_xattr_nid = 0;
-                       mutex_unlock_op(sbi, NODE_NEW);
-                       return PTR_ERR(page);
+                       error = PTR_ERR(page);
+                       goto exit;
                }
 
                alloc_nid_done(sbi, fi->i_xattr_nid);
@@ -349,8 +350,8 @@ int f2fs_setxattr(struct inode *inode, int name_index, const char *name,
                /* The inode already has an extended attribute block. */
                page = get_node_page(sbi, fi->i_xattr_nid);
                if (IS_ERR(page)) {
-                       mutex_unlock_op(sbi, NODE_NEW);
-                       return PTR_ERR(page);
+                       error = PTR_ERR(page);
+                       goto exit;
                }
 
                base_addr = page_address(page);
@@ -438,6 +439,7 @@ int f2fs_setxattr(struct inode *inode, int name_index, const char *name,
        return 0;
 cleanup:
        f2fs_put_page(page, 1);
+exit:
        mutex_unlock_op(sbi, NODE_NEW);
        return error;
 }