From 8f9d508fd050e44b1be1c1ddfded93b28049d084 Mon Sep 17 00:00:00 2001
From: pfg <pfg@ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
Date: Wed, 6 Jan 2016 16:25:00 +0000
Subject: [PATCH] MFC	r292872:

ext2: recognize ext4 INCOMPAT_RECOVER flag

This is a flag specific for journalling in ext4.
Add it to the list of ext4 features we ignore for
read-only purposes.

PR:		205668


git-svn-id: svn://svn.freebsd.org/base/stable/10@293236 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
---
 sys/fs/ext2fs/ext2fs.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sys/fs/ext2fs/ext2fs.h b/sys/fs/ext2fs/ext2fs.h
index 9985c4504..7eabc4715 100644
--- a/sys/fs/ext2fs/ext2fs.h
+++ b/sys/fs/ext2fs/ext2fs.h
@@ -187,6 +187,7 @@ struct csum {
 
 #define	EXT2F_INCOMPAT_COMP		0x0001
 #define	EXT2F_INCOMPAT_FTYPE		0x0002
+#define	EXT2F_INCOMPAT_RECOVER		0x0004
 #define	EXT2F_INCOMPAT_META_BG		0x0010
 #define	EXT2F_INCOMPAT_EXTENTS		0x0040
 #define	EXT2F_INCOMPAT_64BIT		0x0080
@@ -208,6 +209,7 @@ struct csum {
  *
  * We do not support these EXT4 features but they are irrelevant
  * for read-only support:
+ * - EXT2F_INCOMPAT_RECOVER
  * - EXT2F_INCOMPAT_FLEX_BG
  * - EXT2F_INCOMPAT_META_BG
  */
@@ -216,6 +218,7 @@ struct csum {
 					 EXT2F_ROCOMPAT_EXTRA_ISIZE)
 #define	EXT2F_INCOMPAT_SUPP		EXT2F_INCOMPAT_FTYPE
 #define	EXT4F_RO_INCOMPAT_SUPP		(EXT2F_INCOMPAT_EXTENTS | \
+					 EXT2F_INCOMPAT_RECOVER | \
 					 EXT2F_INCOMPAT_FLEX_BG | \
 					 EXT2F_INCOMPAT_META_BG )
 
-- 
2.45.0