On 13.12.24 10:52, Andrey Zhadchenko wrote:
On 12/5/24 22:55, Alexander Atanasov wrote:
Prepare pios earlier in preparation to try to execute them earlier.
Convert more places to use lock less lists.
https://virtuozzo.atlassian.net/browse/VSTOR-91820
Signed-off-by: Alexander Atanasov <alexander.atana...@virtuozzo.com>
---
drivers/md/dm-ploop-map.c | 95 ++++++++++++++++++++++++---------------
1 file changed, 60 insertions(+), 35 deletions(-)
diff --git a/drivers/md/dm-ploop-map.c b/drivers/md/dm-ploop-map.c
index 8d165bd4fa9d..475494b951a3 100644
--- a/drivers/md/dm-ploop-map.c
+++ b/drivers/md/dm-ploop-map.c
@@ -292,11 +292,15 @@ static struct pio
*ploop_split_and_chain_pio(struct ploop *ploop,
ALLOW_ERROR_INJECTION(ploop_split_and_chain_pio, NULL);
static int ploop_split_pio_to_list(struct ploop *ploop, struct pio
*pio,
- struct list_head *ret_list)
+ struct llist_head *ret_list)
{
[...snip ....]
&deferred_pios);
+ llflush_pios = llist_del_all(&ploop->pios[PLOOP_LIST_FLUSH]);
+ smp_wmb(); /* */
For what do we need this memory barrier?
We do not need it, i've missed to remove it - it was part of something
that didn't worked out - i will remove it along with other barriers i
forgot.
--
Regards,
Alexander Atanasov
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