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authorAlasdair G Kergon <agk@redhat.com>2012-07-27 15:08:16 +0100
committerAlasdair G Kergon <agk@redhat.com>2012-07-27 15:08:16 +0100
commit1f4e0ff07980820977f45d6a5dbc81d3bb9ce4d3 (patch)
tree5b5a159add010d09ea58ca12fd079b16f05333b8 /drivers/md/dm-snap.c
parente49e582965b3694f07a106adc83ddb44aa4f0890 (diff)
downloadlinaro-lsk-1f4e0ff07980820977f45d6a5dbc81d3bb9ce4d3.tar.gz
dm thin: commit before gathering status
Commit outstanding metadata before returning the status for a dm thin pool so that the numbers reported are as up-to-date as possible. The commit is not performed if the device is suspended or if the DM_NOFLUSH_FLAG is supplied by userspace and passed to the target through a new 'status_flags' parameter in the target's dm_status_fn. The userspace dmsetup tool will support the --noflush flag with the 'dmsetup status' and 'dmsetup wait' commands from version 1.02.76 onwards. Tested-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm-snap.c')
-rw-r--r--drivers/md/dm-snap.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index 6c0f3e33923..a143921feaf 100644
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -1849,7 +1849,7 @@ static void snapshot_merge_resume(struct dm_target *ti)
}
static int snapshot_status(struct dm_target *ti, status_type_t type,
- char *result, unsigned int maxlen)
+ unsigned status_flags, char *result, unsigned maxlen)
{
unsigned sz = 0;
struct dm_snapshot *snap = ti->private;
@@ -2151,8 +2151,8 @@ static void origin_resume(struct dm_target *ti)
ti->max_io_len = get_origin_minimum_chunksize(dev->bdev);
}
-static int origin_status(struct dm_target *ti, status_type_t type, char *result,
- unsigned int maxlen)
+static int origin_status(struct dm_target *ti, status_type_t type,
+ unsigned status_flags, char *result, unsigned maxlen)
{
struct dm_dev *dev = ti->private;