qemu-devel.nongnu.org archive mirror
 help / color / mirror / Atom feed
From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
To: qemu-block@nongnu.org
Cc: qemu-devel@nongnu.org, integration@gluster.org,
	namei.unix@gmail.com, dillaman@redhat.com, berto@igalia.com,
	eblake@redhat.com, pl@kamp.de, ronniesahlberg@gmail.com,
	fam@euphon.net, sw@weilnetz.de, stefanha@redhat.com,
	pbonzini@redhat.com, pavel.dovgaluk@ispras.ru, ari@tuxera.com,
	mreitz@redhat.com, kwolf@redhat.com, vsementsov@virtuozzo.com,
	jsnow@redhat.com
Subject: [PATCH v4 05/11] block: use int64_t instead of uint64_t in copy_range driver handlers
Date: Wed, 24 Mar 2021 23:51:26 +0300	[thread overview]
Message-ID: <20210324205132.464899-6-vsementsov@virtuozzo.com> (raw)
In-Reply-To: <20210324205132.464899-1-vsementsov@virtuozzo.com>

We are generally moving to int64_t for both offset and bytes parameters
on all io paths.

Main motivation is realization of 64-bit write_zeroes operation for
fast zeroing large disk chunks, up to the whole disk.

We chose signed type, to be consistent with off_t (which is signed) and
with possibility for signed return type (where negative value means
error).

So, convert driver copy_range handlers parameters which are already
64bit to signed type.

Now let's consider all callers. Simple

  git grep '\->bdrv_co_copy_range'

shows the only caller:

  bdrv_co_copy_range_internal(), which doesn bdrv_check_request32(),
  so everything is OK.

Still, the functions may be called directly, not only by drv->...
Let's check:

git grep '\.bdrv_co_copy_range_\(from\|to\)\s*=' | \
awk '{print $4}' | sed 's/,//' | sed 's/&//' | sort | uniq | \
while read func; do git grep "$func(" | \
grep -v "$func(BlockDriverState"; done

shows no more callers. So, we are done.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 include/block/block_int.h | 12 ++++++------
 block/file-posix.c        | 10 +++++-----
 block/iscsi.c             | 12 ++++++------
 block/qcow2.c             | 12 ++++++------
 block/raw-format.c        | 16 ++++++++--------
 5 files changed, 31 insertions(+), 31 deletions(-)

diff --git a/include/block/block_int.h b/include/block/block_int.h
index 928369e0bc..88b19db756 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -313,10 +313,10 @@ struct BlockDriver {
      */
     int coroutine_fn (*bdrv_co_copy_range_from)(BlockDriverState *bs,
                                                 BdrvChild *src,
-                                                uint64_t offset,
+                                                int64_t offset,
                                                 BdrvChild *dst,
-                                                uint64_t dst_offset,
-                                                uint64_t bytes,
+                                                int64_t dst_offset,
+                                                int64_t bytes,
                                                 BdrvRequestFlags read_flags,
                                                 BdrvRequestFlags write_flags);
 
@@ -330,10 +330,10 @@ struct BlockDriver {
      */
     int coroutine_fn (*bdrv_co_copy_range_to)(BlockDriverState *bs,
                                               BdrvChild *src,
-                                              uint64_t src_offset,
+                                              int64_t src_offset,
                                               BdrvChild *dst,
-                                              uint64_t dst_offset,
-                                              uint64_t bytes,
+                                              int64_t dst_offset,
+                                              int64_t bytes,
                                               BdrvRequestFlags read_flags,
                                               BdrvRequestFlags write_flags);
 
diff --git a/block/file-posix.c b/block/file-posix.c
index add56cab00..6faf7eb96e 100644
--- a/block/file-posix.c
+++ b/block/file-posix.c
@@ -3167,8 +3167,8 @@ static void raw_abort_perm_update(BlockDriverState *bs)
 }
 
 static int coroutine_fn raw_co_copy_range_from(
-        BlockDriverState *bs, BdrvChild *src, uint64_t src_offset,
-        BdrvChild *dst, uint64_t dst_offset, uint64_t bytes,
+        BlockDriverState *bs, BdrvChild *src, int64_t src_offset,
+        BdrvChild *dst, int64_t dst_offset, int64_t bytes,
         BdrvRequestFlags read_flags, BdrvRequestFlags write_flags)
 {
     return bdrv_co_copy_range_to(src, src_offset, dst, dst_offset, bytes,
@@ -3177,10 +3177,10 @@ static int coroutine_fn raw_co_copy_range_from(
 
 static int coroutine_fn raw_co_copy_range_to(BlockDriverState *bs,
                                              BdrvChild *src,
-                                             uint64_t src_offset,
+                                             int64_t src_offset,
                                              BdrvChild *dst,
-                                             uint64_t dst_offset,
-                                             uint64_t bytes,
+                                             int64_t dst_offset,
+                                             int64_t bytes,
                                              BdrvRequestFlags read_flags,
                                              BdrvRequestFlags write_flags)
 {
diff --git a/block/iscsi.c b/block/iscsi.c
index 4d2a416ce7..6bcde6ec6b 100644
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -2172,10 +2172,10 @@ static void coroutine_fn iscsi_co_invalidate_cache(BlockDriverState *bs,
 
 static int coroutine_fn iscsi_co_copy_range_from(BlockDriverState *bs,
                                                  BdrvChild *src,
-                                                 uint64_t src_offset,
+                                                 int64_t src_offset,
                                                  BdrvChild *dst,
-                                                 uint64_t dst_offset,
-                                                 uint64_t bytes,
+                                                 int64_t dst_offset,
+                                                 int64_t bytes,
                                                  BdrvRequestFlags read_flags,
                                                  BdrvRequestFlags write_flags)
 {
@@ -2313,10 +2313,10 @@ static void iscsi_xcopy_data(struct iscsi_data *data,
 
 static int coroutine_fn iscsi_co_copy_range_to(BlockDriverState *bs,
                                                BdrvChild *src,
-                                               uint64_t src_offset,
+                                               int64_t src_offset,
                                                BdrvChild *dst,
-                                               uint64_t dst_offset,
-                                               uint64_t bytes,
+                                               int64_t dst_offset,
+                                               int64_t bytes,
                                                BdrvRequestFlags read_flags,
                                                BdrvRequestFlags write_flags)
 {
diff --git a/block/qcow2.c b/block/qcow2.c
index 1e55ab52b3..c786601d52 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -3975,9 +3975,9 @@ static coroutine_fn int qcow2_co_pdiscard(BlockDriverState *bs,
 
 static int coroutine_fn
 qcow2_co_copy_range_from(BlockDriverState *bs,
-                         BdrvChild *src, uint64_t src_offset,
-                         BdrvChild *dst, uint64_t dst_offset,
-                         uint64_t bytes, BdrvRequestFlags read_flags,
+                         BdrvChild *src, int64_t src_offset,
+                         BdrvChild *dst, int64_t dst_offset,
+                         int64_t bytes, BdrvRequestFlags read_flags,
                          BdrvRequestFlags write_flags)
 {
     BDRVQcow2State *s = bs->opaque;
@@ -4058,9 +4058,9 @@ out:
 
 static int coroutine_fn
 qcow2_co_copy_range_to(BlockDriverState *bs,
-                       BdrvChild *src, uint64_t src_offset,
-                       BdrvChild *dst, uint64_t dst_offset,
-                       uint64_t bytes, BdrvRequestFlags read_flags,
+                       BdrvChild *src, int64_t src_offset,
+                       BdrvChild *dst, int64_t dst_offset,
+                       int64_t bytes, BdrvRequestFlags read_flags,
                        BdrvRequestFlags write_flags)
 {
     BDRVQcow2State *s = bs->opaque;
diff --git a/block/raw-format.c b/block/raw-format.c
index b0fe75f54a..051b00a4d4 100644
--- a/block/raw-format.c
+++ b/block/raw-format.c
@@ -532,16 +532,16 @@ static int raw_probe_geometry(BlockDriverState *bs, HDGeometry *geo)
 
 static int coroutine_fn raw_co_copy_range_from(BlockDriverState *bs,
                                                BdrvChild *src,
-                                               uint64_t src_offset,
+                                               int64_t src_offset,
                                                BdrvChild *dst,
-                                               uint64_t dst_offset,
-                                               uint64_t bytes,
+                                               int64_t dst_offset,
+                                               int64_t bytes,
                                                BdrvRequestFlags read_flags,
                                                BdrvRequestFlags write_flags)
 {
     int ret;
 
-    ret = raw_adjust_offset(bs, (int64_t *)&src_offset, bytes, false);
+    ret = raw_adjust_offset(bs, &src_offset, bytes, false);
     if (ret) {
         return ret;
     }
@@ -551,16 +551,16 @@ static int coroutine_fn raw_co_copy_range_from(BlockDriverState *bs,
 
 static int coroutine_fn raw_co_copy_range_to(BlockDriverState *bs,
                                              BdrvChild *src,
-                                             uint64_t src_offset,
+                                             int64_t src_offset,
                                              BdrvChild *dst,
-                                             uint64_t dst_offset,
-                                             uint64_t bytes,
+                                             int64_t dst_offset,
+                                             int64_t bytes,
                                              BdrvRequestFlags read_flags,
                                              BdrvRequestFlags write_flags)
 {
     int ret;
 
-    ret = raw_adjust_offset(bs, (int64_t *)&dst_offset, bytes, true);
+    ret = raw_adjust_offset(bs, &dst_offset, bytes, true);
     if (ret) {
         return ret;
     }
-- 
2.29.2



  parent reply	other threads:[~2021-03-24 20:54 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-24 20:51 [PATCH v4 00/11] 64bit block-layer: part II Vladimir Sementsov-Ogievskiy
2021-03-24 20:51 ` [PATCH v4 01/11] block/io: bring request check to bdrv_co_{read, write}v_vmstate Vladimir Sementsov-Ogievskiy via
2021-05-11 17:54   ` [PATCH v4 01/11] block/io: bring request check to bdrv_co_{read,write}v_vmstate Eric Blake
2021-03-24 20:51 ` [PATCH v4 02/11] qcow2: check request on vmstate save/load path Vladimir Sementsov-Ogievskiy
2021-05-11 17:57   ` Eric Blake
2021-03-24 20:51 ` [PATCH v4 03/11] block: use int64_t instead of uint64_t in driver read handlers Vladimir Sementsov-Ogievskiy
2021-05-11 19:22   ` Eric Blake
2021-05-24 12:57     ` Vladimir Sementsov-Ogievskiy
2021-03-24 20:51 ` [PATCH v4 04/11] block: use int64_t instead of uint64_t in driver write handlers Vladimir Sementsov-Ogievskiy
2021-05-11 21:00   ` Eric Blake
2021-03-24 20:51 ` Vladimir Sementsov-Ogievskiy [this message]
2021-05-11 21:14   ` [PATCH v4 05/11] block: use int64_t instead of uint64_t in copy_range driver handlers Eric Blake
2021-03-24 20:51 ` [PATCH v4 06/11] block: make BlockLimits::max_pwrite_zeroes 64bit Vladimir Sementsov-Ogievskiy
2021-05-11 21:19   ` Eric Blake
2021-05-12  6:33     ` Vladimir Sementsov-Ogievskiy
2021-03-24 20:51 ` [PATCH v4 07/11] block: use int64_t instead of int in driver write_zeroes handlers Vladimir Sementsov-Ogievskiy
2021-03-24 20:51 ` [PATCH v4 08/11] block/io: allow 64bit write-zeroes requests Vladimir Sementsov-Ogievskiy
2021-03-24 20:51 ` [PATCH v4 09/11] block: make BlockLimits::max_pdiscard 64bit Vladimir Sementsov-Ogievskiy
2021-03-24 20:51 ` [PATCH v4 10/11] block: use int64_t instead of int in driver discard handlers Vladimir Sementsov-Ogievskiy
2021-03-24 20:51 ` [PATCH v4 11/11] block/io: allow 64bit discard requests Vladimir Sementsov-Ogievskiy
2021-03-24 21:13 ` [PATCH v4 00/11] 64bit block-layer: part II no-reply
2021-03-25  7:42   ` Vladimir Sementsov-Ogievskiy
2021-03-25  8:10     ` Vladimir Sementsov-Ogievskiy

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210324205132.464899-6-vsementsov@virtuozzo.com \
    --to=vsementsov@virtuozzo.com \
    --cc=ari@tuxera.com \
    --cc=berto@igalia.com \
    --cc=dillaman@redhat.com \
    --cc=eblake@redhat.com \
    --cc=fam@euphon.net \
    --cc=integration@gluster.org \
    --cc=jsnow@redhat.com \
    --cc=kwolf@redhat.com \
    --cc=mreitz@redhat.com \
    --cc=namei.unix@gmail.com \
    --cc=pavel.dovgaluk@ispras.ru \
    --cc=pbonzini@redhat.com \
    --cc=pl@kamp.de \
    --cc=qemu-block@nongnu.org \
    --cc=qemu-devel@nongnu.org \
    --cc=ronniesahlberg@gmail.com \
    --cc=stefanha@redhat.com \
    --cc=sw@weilnetz.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).