From d905fdaaa7d59abde1535075cca6774fd7f0ef0a Mon Sep 17 00:00:00 2001 From: Amir Goldstein Date: Thu, 4 May 2017 16:26:23 +0300 Subject: [PATCH] xfs: use the common helper uuid_is_null() Use the common helper uuid_is_null() and remove the xfs specific helper uuid_is_nil(). The common helper does not check for the NULL pointer value as xfs helper did, but xfs code never calls the helper with a pointer that can be NULL. Conform comments and warning strings to use the term 'null uuid' instead of 'nil uuid', because this is the terminology used by lib/uuid.c and its users. It is also the terminology used in userspace by libuuid and xfsprogs. Signed-off-by: Amir Goldstein [hch: remove now unused uuid.[ch]] Signed-off-by: Christoph Hellwig Reviewed-by: Brian Foster Reviewed-by: Andy Shevchenko --- fs/xfs/Makefile | 3 +-- fs/xfs/uuid.c | 32 -------------------------------- fs/xfs/uuid.h | 23 ----------------------- fs/xfs/xfs_linux.h | 1 - fs/xfs/xfs_log_recover.c | 6 +++--- fs/xfs/xfs_mount.c | 8 ++++---- 6 files changed, 8 insertions(+), 65 deletions(-) delete mode 100644 fs/xfs/uuid.c delete mode 100644 fs/xfs/uuid.h diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile index 5c90f82b8f6b..a6e955bfead8 100644 --- a/fs/xfs/Makefile +++ b/fs/xfs/Makefile @@ -98,8 +98,7 @@ xfs-y += xfs_aops.o \ xfs_sysfs.o \ xfs_trans.o \ xfs_xattr.o \ - kmem.o \ - uuid.o + kmem.o # low-level transaction/log code xfs-y += xfs_log.o \ diff --git a/fs/xfs/uuid.c b/fs/xfs/uuid.c deleted file mode 100644 index 737c186ea98b..000000000000 --- a/fs/xfs/uuid.c +++ /dev/null @@ -1,32 +0,0 @@ -/* - * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include - -int -uuid_is_nil(uuid_t *uuid) -{ - int i; - char *cp = (char *)uuid; - - if (uuid == NULL) - return 0; - /* implied check of version number here... */ - for (i = 0; i < sizeof *uuid; i++) - if (*cp++) return 0; /* not nil */ - return 1; /* is nil */ -} diff --git a/fs/xfs/uuid.h b/fs/xfs/uuid.h deleted file mode 100644 index 5aea49bf0963..000000000000 --- a/fs/xfs/uuid.h +++ /dev/null @@ -1,23 +0,0 @@ -/* - * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#ifndef __XFS_SUPPORT_UUID_H__ -#define __XFS_SUPPORT_UUID_H__ - -extern int uuid_is_nil(uuid_t *uuid); - -#endif /* __XFS_SUPPORT_UUID_H__ */ diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h index 2c33d915e550..2d167fe643ec 100644 --- a/fs/xfs/xfs_linux.h +++ b/fs/xfs/xfs_linux.h @@ -43,7 +43,6 @@ typedef __u32 xfs_nlink_t; #include "kmem.h" #include "mrlock.h" -#include "uuid.h" #include #include diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index cd0b077deb35..8cec1e5505a4 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -352,13 +352,13 @@ xlog_header_check_mount( { ASSERT(head->h_magicno == cpu_to_be32(XLOG_HEADER_MAGIC_NUM)); - if (uuid_is_nil(&head->h_fs_uuid)) { + if (uuid_is_null(&head->h_fs_uuid)) { /* * IRIX doesn't write the h_fs_uuid or h_fmt fields. If - * h_fs_uuid is nil, we assume this log was last mounted + * h_fs_uuid is null, we assume this log was last mounted * by IRIX and continue. */ - xfs_warn(mp, "nil uuid in log - IRIX style log"); + xfs_warn(mp, "null uuid in log - IRIX style log"); } else if (unlikely(!uuid_equal(&mp->m_sb.sb_uuid, &head->h_fs_uuid))) { xfs_warn(mp, "log has mismatched uuid - can't recover"); xlog_header_check_dump(mp, head); diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index 51f7d03ef86c..54452967e35e 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -80,14 +80,14 @@ xfs_uuid_mount( if (mp->m_flags & XFS_MOUNT_NOUUID) return 0; - if (uuid_is_nil(uuid)) { - xfs_warn(mp, "Filesystem has nil UUID - can't mount"); + if (uuid_is_null(uuid)) { + xfs_warn(mp, "Filesystem has null UUID - can't mount"); return -EINVAL; } mutex_lock(&xfs_uuid_table_mutex); for (i = 0, hole = -1; i < xfs_uuid_table_size; i++) { - if (uuid_is_nil(&xfs_uuid_table[i])) { + if (uuid_is_null(&xfs_uuid_table[i])) { hole = i; continue; } @@ -124,7 +124,7 @@ xfs_uuid_unmount( mutex_lock(&xfs_uuid_table_mutex); for (i = 0; i < xfs_uuid_table_size; i++) { - if (uuid_is_nil(&xfs_uuid_table[i])) + if (uuid_is_null(&xfs_uuid_table[i])) continue; if (!uuid_equal(uuid, &xfs_uuid_table[i])) continue;