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[PATCH] dm table: add target flush

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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 <[email protected]>
Signed-off-by: Alasdair G Kergon <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Bryn Reeves 2006-10-03 01:15:43 -07:00 • committed by Linus Torvalds
commit 999d816851
3 changed files with 8 additions and 1 deletions
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5
drivers/md/dm-table.c
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@ -1001,6 +1001,11 @@ int dm_table_flush_all(struct dm_table *t)
{
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);