From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Tue, 12 Apr 2011 22:21:04 +0000 (-0700)
Subject: vfs: Re-introduce s_uuid in the superblock
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0bba01695b74fdd2f9286243bb39f88544d81401;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

vfs: Re-introduce s_uuid in the superblock

Gaah.  When commit be85bccaa5aa reverted the export of file system uuid
via /proc/<pid>/mountinfo, it also unintentionally removed the s_uuid
field in struct super_block.

I didn't mean to do that, since filesystems have been taught to fill it
in (and we want to keep it for future re-introduction in the mountinfo
file).

Stupid of me. This adds it back in.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 5b14843af9f9..dbd860af0804 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1403,6 +1403,7 @@ struct super_block {
 	wait_queue_head_t	s_wait_unfrozen;
 
 	char s_id[32];				/* Informational name */
+	u8 s_uuid[16];				/* UUID */
 
 	void 			*s_fs_info;	/* Filesystem private info */
 	fmode_t			s_mode;