bfs: convert bfs to use the new mount api

Convert the bfs filesystem to use the new mount API.

Tested using mount and simple writes & reads on ro/rw bfs devices.

Signed-off-by: Pavel Reichl <preichl@redhat.com>
Link: https://lore.kernel.org/r/20250320204224.181403-1-preichl@redhat.com
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Pavel Reichl 2025-03-20 21:42:24 +01:00 committed by Christian Brauner
parent 0af2f6be1b
commit 9d5c8dc811
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@ -17,6 +17,7 @@
#include <linux/writeback.h>
#include <linux/uio.h>
#include <linux/uaccess.h>
#include <linux/fs_context.h>
#include "bfs.h"
MODULE_AUTHOR("Tigran Aivazian <aivazian.tigran@gmail.com>");
@ -305,7 +306,7 @@ void bfs_dump_imap(const char *prefix, struct super_block *s)
#endif
}
static int bfs_fill_super(struct super_block *s, void *data, int silent)
static int bfs_fill_super(struct super_block *s, struct fs_context *fc)
{
struct buffer_head *bh, *sbh;
struct bfs_super_block *bfs_sb;
@ -314,6 +315,7 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
struct bfs_sb_info *info;
int ret = -EINVAL;
unsigned long i_sblock, i_eblock, i_eoff, s_size;
int silent = fc->sb_flags & SB_SILENT;
info = kzalloc(sizeof(*info), GFP_KERNEL);
if (!info)
@ -446,16 +448,26 @@ out:
return ret;
}
static struct dentry *bfs_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *data)
static int bfs_get_tree(struct fs_context *fc)
{
return mount_bdev(fs_type, flags, dev_name, data, bfs_fill_super);
return get_tree_bdev(fc, bfs_fill_super);
}
static const struct fs_context_operations bfs_context_ops = {
.get_tree = bfs_get_tree,
};
static int bfs_init_fs_context(struct fs_context *fc)
{
fc->ops = &bfs_context_ops;
return 0;
}
static struct file_system_type bfs_fs_type = {
.owner = THIS_MODULE,
.name = "bfs",
.mount = bfs_mount,
.init_fs_context = bfs_init_fs_context,
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};