The commit is pushed to "branch-rh7-3.10.0-1127.18.2.vz7.163.x-ovz" and will
appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-1127.18.2.vz7.163.26
------>
commit e1db1508a16ee2ac6636b7ce1a11b4b5c50a2318
Author: Kirill Tkhai <ktk...@virtuozzo.com>
Date: Sun Sep 20 12:02:23 2020 +0300
ploop: Do not do useless preallocation in kaio_submit_alloc()
io->prealloced_size == end_pos means desired cluster
is already preallocated.
https://jira.sw.ru/browse/PSBM-108008
Signed-off-by: Kirill Tkhai <ktk...@virtuozzo.com>
---
drivers/block/ploop/io_kaio.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/block/ploop/io_kaio.c b/drivers/block/ploop/io_kaio.c
index 00316e7..19d9b0a 100644
--- a/drivers/block/ploop/io_kaio.c
+++ b/drivers/block/ploop/io_kaio.c
@@ -582,7 +582,7 @@ kaio_submit_alloc(struct ploop_io *io, struct ploop_request
* preq,
BUG_ON(preq->prealloc_size);
- if (unlikely(io->prealloced_size < end_pos + clu_siz)) {
+ if (unlikely(io->prealloced_size < end_pos)) {
isize = i_size_read(io->files.inode);
/*
* FIXME: We never initialize io->prealloced_size,
@@ -591,13 +591,12 @@ kaio_submit_alloc(struct ploop_io *io, struct
ploop_request * preq,
*/
if (unlikely(io->prealloced_size < isize)) {
io->prealloced_size = isize;
- if (io->prealloced_size >= end_pos + clu_siz)
+ if (io->prealloced_size >= end_pos)
goto submit;
}
if (!io->prealloc_preq) {
- loff_t pos = (((loff_t)(iblk + 1) << log) |
- (KAIO_PREALLOC - 1)) + 1;
+ loff_t pos = (end_pos | (KAIO_PREALLOC - 1)) + 1;
BUG_ON(preq->prealloc_size);
preq->prealloc_size = pos;
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