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[RFC PATCH] hugetlbfs: fix the hugetlbfs can not be mounted

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From: zhong jiang <zhongjiang@huawei.com>

Since 'commit 3e89e1c5ea84 ("hugetlb: make mm and fs code explicitly non-modular")'
bring in the mainline. mount hugetlbfs will result in the following issue.

mount: unknown filesystme type 'hugetlbfs'

because previous patch remove the module_alias_fs, when we mount the fs type,
the caller get_fs_type can not find the filesystem.

The patch just recover the module_alias_fs to identify the hugetlbfs.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
---
 fs/hugetlbfs/inode.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 4fb7b10..b63e7de 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -35,6 +35,7 @@
 #include <linux/security.h>
 #include <linux/magic.h>
 #include <linux/migrate.h>
+#include <linux/module.h>
 #include <linux/uio.h>
 
 #include <asm/uaccess.h>
@@ -1209,6 +1210,7 @@ static struct dentry *hugetlbfs_mount(struct file_system_type *fs_type,
 	.mount		= hugetlbfs_mount,
 	.kill_sb	= kill_litter_super,
 };
+MODULE_ALIAS_FS("hugetlbfs");
 
 static struct vfsmount *hugetlbfs_vfsmount[HUGE_MAX_HSTATE];
 
-- 
1.8.3.1

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[RFC PATCH] hugetlbfs: fix the hugetlbfs can not be mounted zhongjiang <zhongjiang@huawei.com> - 2016-10-29 08:20 +0200
  Re: [RFC PATCH] hugetlbfs: fix the hugetlbfs can not be mounted zhong jiang <zhongjiang@huawei.com> - 2016-10-29 09:50 +0200
  Re: [RFC PATCH] hugetlbfs: fix the hugetlbfs can not be mounted Andrew Morton <akpm@linux-foundation.org> - 2016-11-03 20:20 +0100
    Re: [RFC PATCH] hugetlbfs: fix the hugetlbfs can not be mounted Paul Gortmaker <paul.gortmaker@windriver.com> - 2016-11-03 22:00 +0100
    Re: [RFC PATCH] hugetlbfs: fix the hugetlbfs can not be mounted zhong jiang <zhongjiang@huawei.com> - 2016-11-04 03:30 +0100

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