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authorDavid Howells <dhowells@redhat.com>2019-03-25 19:38:23 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2019-05-26 01:00:05 +0300
commit9030d16eb8adcbf9e80d20b909856c6fdabfdec4 (patch)
treeec2e62c9be9f8d577029c5272c6ac1a3c00d7a26
parent33cada40b51f083d8508e66f96c646640f773835 (diff)
downloadlinux-9030d16eb8adcbf9e80d20b909856c6fdabfdec4.tar.xz
vfs: Convert bdev to use the new mount API
Convert the bdev filesystem to the new internal mount API as the old one will be obsoleted and removed. This allows greater flexibility in communication of mount parameters between userspace, the VFS and the filesystem. See Documentation/filesystems/mount_api.txt for more information. Signed-off-by: David Howells <dhowells@redhat.com> cc: Jens Axboe <axboe@kernel.dk> cc: linux-fsdevel@vger.kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-rw-r--r--fs/block_dev.c17
1 files changed, 9 insertions, 8 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 3143da7b0998..1d051b962159 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/pseudo_fs.h>
#include <linux/uio.h>
#include <linux/namei.h>
#include <linux/log2.h>
@@ -833,19 +834,19 @@ 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_sops, NULL, BDEVFS_MAGIC);
- if (!IS_ERR(dent))
- dent->d_sb->s_iflags |= SB_I_CGROUPWB;
- return dent;
+ struct pseudo_fs_context *ctx = init_pseudo(fc, BDEVFS_MAGIC);
+ if (!ctx)
+ return -ENOMEM;
+ fc->s_iflags |= SB_I_CGROUPWB;
+ ctx->ops = &bdev_sops;
+ return 0;
}
static struct file_system_type bd_type = {
.name = "bdev",
- .mount = bd_mount,
+ .init_fs_context = bd_init_fs_context,
.kill_sb = kill_anon_super,
};