The commit is pushed to "branch-rh8-4.18.0-240.1.1.vz8.5.x-ovz" and will appear
at https://src.openvz.org/scm/ovz/vzkernel.git
after rh8-4.18.0-240.1.1.vz8.5.30
------>
commit 69ec92a1a309fef9642b390160a2385d03ab3c18
Author: Kirill Tkhai <[email protected]>
Date: Mon May 17 19:04:55 2021 +0300
ploop: Introduce zero_fill_pio()
Signed-off-by: Kirill Tkhai <[email protected]>
=====================
Patchset description:
dm-ploop: Kill loop
Intermediate patches can't be base for bisect.
In scope of https://jira.sw.ru/browse/PSBM-123654
Signed-off-by: Kirill Tkhai <[email protected]>
---
drivers/md/dm-ploop-map.c | 23 +++++++++++++++++++++--
1 file changed, 21 insertions(+), 2 deletions(-)
diff --git a/drivers/md/dm-ploop-map.c b/drivers/md/dm-ploop-map.c
index 5c2b4e32e525..ae7c1e0b4fc7 100644
--- a/drivers/md/dm-ploop-map.c
+++ b/drivers/md/dm-ploop-map.c
@@ -223,6 +223,26 @@ static int ploop_map_discard(struct ploop *ploop, struct
pio *pio)
return DM_MAPIO_SUBMITTED;
}
+/* Zero @count bytes of @qio->bi_io_vec since @from byte */
+static void zero_fill_pio(struct pio *pio)
+{
+ struct bvec_iter bi = {
+ .bi_size = pio->bi_iter.bi_size,
+ .bi_bvec_done = pio->bi_iter.bi_bvec_done,
+ .bi_idx = pio->bi_iter.bi_idx,
+ };
+ struct bio_vec bv;
+ void *data;
+
+ for_each_bvec(bv, pio->bi_io_vec, bi, bi) {
+ if (!bv.bv_len)
+ continue;
+ data = kmap(bv.bv_page);
+ memset(data + bv.bv_offset, 0, bv.bv_len);
+ kunmap(bv.bv_page);
+ }
+}
+
struct pio *find_endio_hook_range(struct ploop *ploop, struct rb_root *root,
unsigned int left, unsigned int right)
{
@@ -988,9 +1008,8 @@ static void initiate_delta_read(struct ploop *ploop,
unsigned int level,
unsigned int dst_cluster, struct pio *pio)
{
if (dst_cluster == BAT_ENTRY_NONE) {
- struct bio *bio = dm_bio_from_per_bio_data(pio, sizeof(*pio));
/* No one delta contains dst_cluster. */
- zero_fill_bio(bio);
+ zero_fill_pio(pio);
pio_endio(pio);
return;
}
_______________________________________________
Devel mailing list
[email protected]
https://lists.openvz.org/mailman/listinfo/devel
