From bc98a42c1f7d0f886c0c1b75a92a004976a46d9f Mon Sep 17 00:00:00 2001
From: David Howells <dhowells@redhat.com>
Date: Mon, 17 Jul 2017 08:45:34 +0100
Subject: VFS: Convert sb->s_flags & MS_RDONLY to sb_rdonly(sb)

Firstly by applying the following with coccinelle's spatch:

	@@ expression SB; @@
	-SB->s_flags & MS_RDONLY
	+sb_rdonly(SB)

to effect the conversion to sb_rdonly(sb), then by applying:

	@@ expression A, SB; @@
	(
	-(!sb_rdonly(SB)) && A
	+!sb_rdonly(SB) && A
	|
	-A != (sb_rdonly(SB))
	+A != sb_rdonly(SB)
	|
	-A == (sb_rdonly(SB))
	+A == sb_rdonly(SB)
	|
	-!(sb_rdonly(SB))
	+!sb_rdonly(SB)
	|
	-A && (sb_rdonly(SB))
	+A && sb_rdonly(SB)
	|
	-A || (sb_rdonly(SB))
	+A || sb_rdonly(SB)
	|
	-(sb_rdonly(SB)) != A
	+sb_rdonly(SB) != A
	|
	-(sb_rdonly(SB)) == A
	+sb_rdonly(SB) == A
	|
	-(sb_rdonly(SB)) && A
	+sb_rdonly(SB) && A
	|
	-(sb_rdonly(SB)) || A
	+sb_rdonly(SB) || A
	)

	@@ expression A, B, SB; @@
	(
	-(sb_rdonly(SB)) ? 1 : 0
	+sb_rdonly(SB)
	|
	-(sb_rdonly(SB)) ? A : B
	+sb_rdonly(SB) ? A : B
	)

to remove left over excess bracketage and finally by applying:

	@@ expression A, SB; @@
	(
	-(A & MS_RDONLY) != sb_rdonly(SB)
	+(bool)(A & MS_RDONLY) != sb_rdonly(SB)
	|
	-(A & MS_RDONLY) == sb_rdonly(SB)
	+(bool)(A & MS_RDONLY) == sb_rdonly(SB)
	)

to make comparisons against the result of sb_rdonly() (which is a bool)
work correctly.

Signed-off-by: David Howells <dhowells@redhat.com>
---
 fs/btrfs/disk-io.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

(limited to 'fs/btrfs/disk-io.c')

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 080e2ebb8aa0..4a9b40f604fa 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2478,7 +2478,7 @@ static int btrfs_replay_log(struct btrfs_fs_info *fs_info,
 		return ret;
 	}
 
-	if (fs_info->sb->s_flags & MS_RDONLY) {
+	if (sb_rdonly(fs_info->sb)) {
 		ret = btrfs_commit_super(fs_info);
 		if (ret)
 			return ret;
@@ -2874,7 +2874,7 @@ int open_ctree(struct super_block *sb,
 
 	features = btrfs_super_compat_ro_flags(disk_super) &
 		~BTRFS_FEATURE_COMPAT_RO_SUPP;
-	if (!(sb->s_flags & MS_RDONLY) && features) {
+	if (!sb_rdonly(sb) && features) {
 		btrfs_err(fs_info,
 	"cannot mount read-write because of unsupported optional features (%llx)",
 		       features);
@@ -3039,7 +3039,7 @@ retry_root_backup:
 		btrfs_calc_num_tolerated_disk_barrier_failures(fs_info);
 	if (fs_info->fs_devices->missing_devices >
 	     fs_info->num_tolerated_disk_barrier_failures &&
-	    !(sb->s_flags & MS_RDONLY)) {
+	    !sb_rdonly(sb)) {
 		btrfs_warn(fs_info,
 "missing devices (%llu) exceeds the limit (%d), writeable mount is not allowed",
 			fs_info->fs_devices->missing_devices,
@@ -3102,7 +3102,7 @@ retry_root_backup:
 	if (ret)
 		goto fail_qgroup;
 
-	if (!(sb->s_flags & MS_RDONLY)) {
+	if (!sb_rdonly(sb)) {
 		ret = btrfs_cleanup_fs_roots(fs_info);
 		if (ret)
 			goto fail_qgroup;
@@ -3128,7 +3128,7 @@ retry_root_backup:
 		goto fail_qgroup;
 	}
 
-	if (sb->s_flags & MS_RDONLY)
+	if (sb_rdonly(sb))
 		return 0;
 
 	if (btrfs_test_opt(fs_info, CLEAR_CACHE) &&
@@ -3928,7 +3928,7 @@ void close_ctree(struct btrfs_fs_info *fs_info)
 
 	cancel_work_sync(&fs_info->async_reclaim_work);
 
-	if (!(fs_info->sb->s_flags & MS_RDONLY)) {
+	if (!sb_rdonly(fs_info->sb)) {
 		/*
 		 * If the cleaner thread is stopped and there are
 		 * block groups queued for removal, the deletion will be
-- 
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