[PATCH] ubifs: Fix build error without CONFIG_UBIFS_FS_XATTR

[YueHaibing]

Fix gcc build error while CONFIG_UBIFS_FS_XATTR
is not set

fs/ubifs/dir.o: In function `ubifs_unlink':
dir.c:(.text+0x260): undefined reference to `ubifs_purge_xattrs'
fs/ubifs/dir.o: In function `do_rename':
dir.c:(.text+0x1edc): undefined reference to `ubifs_purge_xattrs'
fs/ubifs/dir.o: In function `ubifs_rmdir':
dir.c:(.text+0x2638): undefined reference to `ubifs_purge_xattrs'

Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Fixes: 9ca2d7326444 ("ubifs: Limit number of xattrs per inode")
Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
 fs/ubifs/ubifs.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index 379b9f7..fd7f399 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -2015,13 +2015,17 @@ int ubifs_xattr_set(struct inode *host, const char *name, const void *value,
 		    size_t size, int flags, bool check_lock);
 ssize_t ubifs_xattr_get(struct inode *host, const char *name, void *buf,
 			size_t size);
-int ubifs_purge_xattrs(struct inode *host);
 
 #ifdef CONFIG_UBIFS_FS_XATTR
 void ubifs_evict_xattr_inode(struct ubifs_info *c, ino_t xattr_inum);
+int ubifs_purge_xattrs(struct inode *host);
 #else
 static inline void ubifs_evict_xattr_inode(struct ubifs_info *c,
 					   ino_t xattr_inum) { }
+static inline int ubifs_purge_xattrs(struct inode *host)
+{
+	return 0;
+}
 #endif
 
 #ifdef CONFIG_UBIFS_FS_SECURITY
-- 
2.7.4