linux-kernel - [PATCH 08/38] vfs: Convert zsmalloc to fs

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Date:   Thu, 14 Mar 2019 16:09:59 +0000
From:   David Howells <dhowells@...hat.com>
To:     viro@...iv.linux.org.uk
Cc:     Minchan Kim <minchan@...nel.org>, Nitin Gupta <ngupta@...are.org>,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        linux-mm@...ck.org, dhowells@...hat.com,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 08/38] vfs: Convert zsmalloc to fs_context

Signed-off-by: David Howells <dhowells@...hat.com>
cc: Minchan Kim <minchan@...nel.org>
cc: Nitin Gupta <ngupta@...are.org>
cc: Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
cc: linux-mm@...ck.org
---

 mm/zsmalloc.c |   19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 0787d33b80d8..02bfc7f70fab 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -52,6 +52,7 @@
 #include <linux/zsmalloc.h>
 #include <linux/zpool.h>
 #include <linux/mount.h>
+#include <linux/fs_context.h>
 #include <linux/migrate.h>
 #include <linux/pagemap.h>
 #include <linux/fs.h>
@@ -1814,19 +1815,21 @@ static void lock_zspage(struct zspage *zspage)
 	} while ((page = get_next_page(page)) != NULL);
 }
 
-static struct dentry *zs_mount(struct file_system_type *fs_type,
-				int flags, const char *dev_name, void *data)
-{
-	static const struct dentry_operations ops = {
-		.d_dname = simple_dname,
-	};
+static const struct dentry_operations zs_dentry_operations = {
+	.d_dname = simple_dname,
+};
 
-	return mount_pseudo(fs_type, "zsmalloc:", NULL, &ops, ZSMALLOC_MAGIC);
+
+static int zs_init_fs_context(struct fs_context *fc)
+{
+	return vfs_init_pseudo_fs_context(fc, "zsmalloc:",
+					  NULL, NULL,
+					  &zs_dentry_operations, ZSMALLOC_MAGIC);
 }
 
 static struct file_system_type zsmalloc_fs = {
 	.name		= "zsmalloc",
-	.mount		= zs_mount,
+	.init_fs_context = zs_init_fs_context,
 	.kill_sb	= kill_anon_super,
 };