diff options
Diffstat (limited to 'include/linux/drbd_limits.h')
| -rw-r--r-- | include/linux/drbd_limits.h | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/include/linux/drbd_limits.h b/include/linux/drbd_limits.h index 8ac8c5d9a3ad..ddac68422a96 100644 --- a/include/linux/drbd_limits.h +++ b/include/linux/drbd_limits.h @@ -126,8 +126,7 @@ #define DRBD_RESYNC_RATE_DEF 250 #define DRBD_RESYNC_RATE_SCALE 'k' /* kilobytes */ - /* less than 7 would hit performance unnecessarily. */ -#define DRBD_AL_EXTENTS_MIN 7 +#define DRBD_AL_EXTENTS_MIN 67 /* we use u16 as "slot number", (u16)~0 is "FREE". * If you use >= 292 kB on-disk ring buffer, * this is the maximum you can use: */ @@ -210,6 +209,12 @@ #define DRBD_MD_FLUSHES_DEF 1 #define DRBD_TCP_CORK_DEF 1 #define DRBD_AL_UPDATES_DEF 1 +/* We used to ignore the discard_zeroes_data setting. + * To not change established (and expected) behaviour, + * by default assume that, for discard_zeroes_data=0, + * we can make that an effective discard_zeroes_data=1, + * if we only explicitly zero-out unaligned partial chunks. */ +#define DRBD_DISCARD_ZEROES_IF_ALIGNED 1 #define DRBD_ALLOW_TWO_PRIMARIES_DEF 0 #define DRBD_ALWAYS_ASBP_DEF 0 @@ -230,4 +235,10 @@ #define DRBD_SOCKET_CHECK_TIMEO_MAX DRBD_PING_TIMEO_MAX #define DRBD_SOCKET_CHECK_TIMEO_DEF 0 #define DRBD_SOCKET_CHECK_TIMEO_SCALE '1' + +#define DRBD_RS_DISCARD_GRANULARITY_MIN 0 +#define DRBD_RS_DISCARD_GRANULARITY_MAX (1<<20) /* 1MiByte */ +#define DRBD_RS_DISCARD_GRANULARITY_DEF 0 /* disabled by default */ +#define DRBD_RS_DISCARD_GRANULARITY_SCALE '1' /* bytes */ + #endif |