svn commit: r292872 - head/sys/fs/ext2fs

[Pedro F. Giffuni]

Author: pfg
Date: Tue Dec 29 15:51:52 2015
New Revision: 292872
URL: https://svnweb.freebsd.org/changeset/base/292872

Log:
  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
  MFC after:	1 week

Modified:
  head/sys/fs/ext2fs/ext2fs.h

Modified: head/sys/fs/ext2fs/ext2fs.h
==============================================================================
--- head/sys/fs/ext2fs/ext2fs.h	Tue Dec 29 15:36:46 2015	(r292871)
+++ head/sys/fs/ext2fs/ext2fs.h	Tue Dec 29 15:51:52 2015	(r292872)
@@ -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 )