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authorChristoph Hellwig <hch@lst.de>2015-01-14 10:42:39 +0100
committerJens Axboe <axboe@fb.com>2015-01-20 14:03:09 -0700
commit7b14a213890a81473ec97ad7e322d5c2f19854ae (patch)
tree9115cee236cd2fb9ff3e471364ebe0d136260a38 /fs/nfs/super.c
parente4d2750909aa26129bd0bf1b0dc832e0845aae90 (diff)
downloadleg-kernel-7b14a213890a81473ec97ad7e322d5c2f19854ae.tar.gz
nfs: don't call bdi_unregister
bdi_destroy already does all the work, and if we delay freeing the anon bdev we can get away with just that single call. Addintionally remove the call during mount failure, as deactivate_super_locked will already call ->kill_sb and clean up the bdi for us. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'fs/nfs/super.c')
-rw-r--r--fs/nfs/super.c24
1 files changed, 6 insertions, 18 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 31a11b0e885d..6ec4fe23b756 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -311,7 +311,6 @@ const struct super_operations nfs_sops = {
.destroy_inode = nfs_destroy_inode,
.write_inode = nfs_write_inode,
.drop_inode = nfs_drop_inode,
- .put_super = nfs_put_super,
.statfs = nfs_statfs,
.evict_inode = nfs_evict_inode,
.umount_begin = nfs_umount_begin,
@@ -2569,7 +2568,7 @@ struct dentry *nfs_fs_mount_common(struct nfs_server *server,
error = nfs_bdi_register(server);
if (error) {
mntroot = ERR_PTR(error);
- goto error_splat_bdi;
+ goto error_splat_super;
}
server->super = s;
}
@@ -2601,9 +2600,6 @@ error_splat_root:
dput(mntroot);
mntroot = ERR_PTR(error);
error_splat_super:
- if (server && !s->s_root)
- bdi_unregister(&server->backing_dev_info);
-error_splat_bdi:
deactivate_locked_super(s);
goto out;
}
@@ -2651,27 +2647,19 @@ out:
EXPORT_SYMBOL_GPL(nfs_fs_mount);
/*
- * Ensure that we unregister the bdi before kill_anon_super
- * releases the device name
- */
-void nfs_put_super(struct super_block *s)
-{
- struct nfs_server *server = NFS_SB(s);
-
- bdi_unregister(&server->backing_dev_info);
-}
-EXPORT_SYMBOL_GPL(nfs_put_super);
-
-/*
* Destroy an NFS2/3 superblock
*/
void nfs_kill_super(struct super_block *s)
{
struct nfs_server *server = NFS_SB(s);
+ dev_t dev = s->s_dev;
+
+ generic_shutdown_super(s);
- kill_anon_super(s);
nfs_fscache_release_super_cookie(s);
+
nfs_free_server(server);
+ free_anon_bdev(dev);
}
EXPORT_SYMBOL_GPL(nfs_kill_super);