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authorSong Liu <songliubraving@fb.com>2015-10-08 21:54:09 -0700
committerNeilBrown <neilb@suse.com>2015-11-01 13:48:29 +1100
commita97b7896447a89749d9258fbb9d8c3faf48a7a4e (patch)
tree4d1718f235e90e20c7385097c307d56d343689ba /drivers/md/md.h
parent6e74a9cfb5a55b0a4214809321b67d7065e55555 (diff)
downloadlinux-a97b7896447a89749d9258fbb9d8c3faf48a7a4e.tar.gz
MD: add new bit to indicate raid array with journal
If a raid array has journal feature bit set, add a new bit to indicate
this. If the array is started without journal disk existing, we know
there is something wrong.

Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: NeilBrown <neilb@suse.com>
Diffstat (limited to 'drivers/md/md.h')
-rw-r--r--drivers/md/md.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/md.h b/drivers/md/md.h
index e14e667a20e9..2bea51edfab7 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -233,6 +233,7 @@ struct mddev {
 				 * md_ioctl checked on it.
 				 */
 #define MD_JOURNAL_CLEAN 5	/* A raid with journal is already clean */
+#define MD_HAS_JOURNAL	6	/* The raid array has journal feature set */
 
 	int				suspended;
 	atomic_t			active_io;