Messages in this thread Patch in this message | | | Date | Thu, 14 Sep 2006 22:53:00 +0100 | From | Alasdair G Kergon <> | Subject | [PATCH 25/25] dm table: add target flush |
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From: Bryn Reeves <breeves@redhat.com>
This patch adds support for a per-target dm_flush_fn method. This is needed to allow dm-loop to invalidate page cache mappings in response to BLKFLSBUF ioctl commands.
Signed-off-by: Bryn Reeves <breeves@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Index: linux-2.6.18-rc7/drivers/md/dm-table.c =================================================================== --- linux-2.6.18-rc7.orig/drivers/md/dm-table.c 2006-09-14 21:36:09.000000000 +0100 +++ linux-2.6.18-rc7/drivers/md/dm-table.c 2006-09-14 21:36:49.000000000 +0100 @@ -1001,6 +1001,11 @@ int dm_table_flush_all(struct dm_table * { struct list_head *d, *devices = dm_table_get_devices(t); int ret = 0; + unsigned i; + + for (i = 0; i < t->num_targets; i++) + if (t->targets[i].type->flush) + t->targets[i].type->flush(&t->targets[i]); for (d = devices->next; d != devices; d = d->next) { struct dm_dev *dd = list_entry(d, struct dm_dev, list); Index: linux-2.6.18-rc7/include/linux/device-mapper.h =================================================================== --- linux-2.6.18-rc7.orig/include/linux/device-mapper.h 2006-09-14 21:36:09.000000000 +0100 +++ linux-2.6.18-rc7/include/linux/device-mapper.h 2006-09-14 21:36:49.000000000 +0100 @@ -55,6 +55,7 @@ typedef int (*dm_endio_fn) (struct dm_ta struct bio *bio, int error, union map_info *map_context); +typedef void (*dm_flush_fn) (struct dm_target *ti); typedef void (*dm_presuspend_fn) (struct dm_target *ti); typedef void (*dm_postsuspend_fn) (struct dm_target *ti); typedef int (*dm_preresume_fn) (struct dm_target *ti); @@ -96,6 +97,7 @@ struct target_type { dm_dtr_fn dtr; dm_map_fn map; dm_endio_fn end_io; + dm_flush_fn flush; dm_presuspend_fn presuspend; dm_postsuspend_fn postsuspend; dm_preresume_fn preresume; Index: linux-2.6.18-rc7/include/linux/dm-ioctl.h =================================================================== --- linux-2.6.18-rc7.orig/include/linux/dm-ioctl.h 2006-09-14 21:05:03.000000000 +0100 +++ linux-2.6.18-rc7/include/linux/dm-ioctl.h 2006-09-14 21:37:12.000000000 +0100 @@ -285,7 +285,7 @@ typedef char ioctl_struct[308]; #define DM_DEV_SET_GEOMETRY _IOWR(DM_IOCTL, DM_DEV_SET_GEOMETRY_CMD, struct dm_ioctl) #define DM_VERSION_MAJOR 4 -#define DM_VERSION_MINOR 9 +#define DM_VERSION_MINOR 10 #define DM_VERSION_PATCHLEVEL 0 #define DM_VERSION_EXTRA "-ioctl (2006-09-14)" - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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