From e836818bd9ec580b65d1970e588f9ba892a88f5c Mon Sep 17 00:00:00 2001
From: Jan Kara <jack@suse.cz>
Date: Wed, 12 Apr 2017 12:24:35 +0200
Subject: [PATCH] ecryptfs: Convert to separately allocated bdi
Allocate struct backing_dev_info separately instead of embedding it
inside the superblock. This unifies handling of bdi among users.
CC: Tyler Hicks <tyhicks@canonical.com>
CC: ecryptfs@vger.kernel.org
Acked-by: Tyler Hicks <tyhicks@canonical.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
---
fs/ecryptfs/ecryptfs_kernel.h | 1 -
fs/ecryptfs/main.c | 4 +---
2 files changed, 1 insertion(+), 4 deletions(-)
diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h
index 95c1c8d345392..9c351bf757b20 100644
--- a/fs/ecryptfs/ecryptfs_kernel.h
+++ b/fs/ecryptfs/ecryptfs_kernel.h
@@ -349,7 +349,6 @@ struct ecryptfs_mount_crypt_stat {
struct ecryptfs_sb_info {
struct super_block *wsi_sb;
struct ecryptfs_mount_crypt_stat mount_crypt_stat;
- struct backing_dev_info bdi;
};
/* file private data. */
diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index 151872dcc1f40..9014479d01600 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -519,12 +519,11 @@ static struct dentry *ecryptfs_mount(struct file_system_type *fs_type, int flags
goto out;
}
- rc = bdi_setup_and_register(&sbi->bdi, "ecryptfs");
+ rc = super_setup_bdi(s);
if (rc)
goto out1;
ecryptfs_set_superblock_private(s, sbi);
- s->s_bdi = &sbi->bdi;
/* ->kill_sb() will take care of sbi after that point */
sbi = NULL;
@@ -633,7 +632,6 @@ static void ecryptfs_kill_block_super(struct super_block *sb)
if (!sb_info)
return;
ecryptfs_destroy_mount_crypt_stat(&sb_info->mount_crypt_stat);
- bdi_destroy(&sb_info->bdi);
kmem_cache_free(ecryptfs_sb_info_cache, sb_info);
}