linux-kernel - [PATCH 05/38] vfs: Convert bdev to fs

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Date:   Thu, 14 Mar 2019 16:09:39 +0000
From:   David Howells <dhowells@...hat.com>
To:     viro@...iv.linux.org.uk
Cc:     Jens Axboe <axboe@...nel.dk>, linux-fsdevel@...r.kernel.org,
        dhowells@...hat.com, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 05/38] vfs: Convert bdev to fs_context

Signed-off-by: David Howells <dhowells@...hat.com>
cc: Jens Axboe <axboe@...nel.dk>
cc: linux-fsdevel@...r.kernel.org
---

 fs/block_dev.c |   14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/fs/block_dev.c b/fs/block_dev.c
index e9faa52bb489..2846970b5415 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -25,6 +25,7 @@
 #include <linux/writeback.h>
 #include <linux/mpage.h>
 #include <linux/mount.h>
+#include <linux/fs_context.h>
 #include <linux/uio.h>
 #include <linux/namei.h>
 #include <linux/log2.h>
@@ -842,19 +843,16 @@ static const struct super_operations bdev_sops = {
 	.evict_inode = bdev_evict_inode,
 };
 
-static struct dentry *bd_mount(struct file_system_type *fs_type,
-	int flags, const char *dev_name, void *data)
+static int bd_init_fs_context(struct fs_context *fc)
 {
-	struct dentry *dent;
-	dent = mount_pseudo(fs_type, "bdev:", &bdev_sops, NULL, BDEVFS_MAGIC);
-	if (!IS_ERR(dent))
-		dent->d_sb->s_iflags |= SB_I_CGROUPWB;
-	return dent;
+	fc->s_iflags |= SB_I_CGROUPWB;
+	return vfs_init_pseudo_fs_context(fc, "bdev:",
+					  &bdev_sops, NULL, NULL, BDEVFS_MAGIC);
 }
 
 static struct file_system_type bd_type = {
 	.name		= "bdev",
-	.mount		= bd_mount,
+	.init_fs_context = bd_init_fs_context,
 	.kill_sb	= kill_anon_super,
 };