diff options
Diffstat (limited to 'include/linux/raid/raid1.h')
| -rw-r--r-- | include/linux/raid/raid1.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/raid/raid1.h b/include/linux/raid/raid1.h index 9d93cf12e890..60e19b667548 100644 --- a/include/linux/raid/raid1.h +++ b/include/linux/raid/raid1.h @@ -80,6 +80,9 @@ struct r1bio_s { atomic_t remaining; /* 'have we finished' count, * used from IRQ handlers */ + atomic_t behind_remaining; /* number of write-behind ios remaining + * in this BehindIO request + */ sector_t sector; int sectors; unsigned long state; @@ -107,4 +110,14 @@ struct r1bio_s { #define R1BIO_Uptodate 0 #define R1BIO_IsSync 1 #define R1BIO_Degraded 2 +#define R1BIO_BehindIO 3 +/* For write-behind requests, we call bi_end_io when + * the last non-write-behind device completes, providing + * any write was successful. Otherwise we call when + * any write-behind write succeeds, otherwise we call + * with failure when last write completes (and all failed). + * Record that bi_end_io was called with this flag... + */ +#define R1BIO_Returned 4 + #endif |