block/write-threshold: drop extra APIs

bdrv_write_threshold_exceeded() is unused.

bdrv_write_threshold_is_set() is used only to double check the value of
bs->write_threshold_offset in tests. No real sense in it (both tests do
check real value with help of bdrv_write_threshold_get())

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210506090621.11848-5-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
[mreitz: Adjusted commit message as per Eric's suggestion]
Signed-off-by: Max Reitz <mreitz@redhat.com>

diff --git a/block/write-threshold.c b/block/write-threshold.c
index 71df3c434f9c67f7f84b0fae8c9d9acde29f201a..65a6acd1427e69b20f40b17ccf2fd2eaf9f5a447 100644 (file)
--- a/block/write-threshold.c
+++ b/block/write-threshold.c
@@ -24,25 +24,6 @@ uint64_t bdrv_write_threshold_get(const BlockDriverState *bs)
     return bs->write_threshold_offset;
 }
 
-bool bdrv_write_threshold_is_set(const BlockDriverState *bs)
-{
-    return bs->write_threshold_offset > 0;
-}
-
-uint64_t bdrv_write_threshold_exceeded(const BlockDriverState *bs,
-                                       const BdrvTrackedRequest *req)
-{
-    if (bdrv_write_threshold_is_set(bs)) {
-        if (req->offset > bs->write_threshold_offset) {
-            return (req->offset - bs->write_threshold_offset) + req->bytes;
-        }
-        if ((req->offset + req->bytes) > bs->write_threshold_offset) {
-            return (req->offset + req->bytes) - bs->write_threshold_offset;
-        }
-    }
-    return 0;
-}
-
 void bdrv_write_threshold_set(BlockDriverState *bs, uint64_t threshold_bytes)
 {
     bs->write_threshold_offset = threshold_bytes;

diff --git a/include/block/write-threshold.h b/include/block/write-threshold.h
index 848a5dde8582cb1ee4940fbb33911a6aa2966025..a03ee1cacdbd8d68686740bf3aeb31bf14664e7b 100644 (file)
--- a/include/block/write-threshold.h
+++ b/include/block/write-threshold.h
@@ -35,30 +35,6 @@ void bdrv_write_threshold_set(BlockDriverState *bs, uint64_t threshold_bytes);
  */
 uint64_t bdrv_write_threshold_get(const BlockDriverState *bs);
 
-/*
- * bdrv_write_threshold_is_set
- *
- * Tell if a write threshold is set for a given BDS.
- */
-bool bdrv_write_threshold_is_set(const BlockDriverState *bs);
-
-/*
- * bdrv_write_threshold_exceeded
- *
- * Return the extent of a write request that exceeded the threshold,
- * or zero if the request is below the threshold.
- * Return zero also if the threshold was not set.
- *
- * NOTE: here we assume the following holds for each request this code
- * deals with:
- *
- * assert((req->offset + req->bytes) <= UINT64_MAX)
- *
- * Please not there is *not* an actual C assert().
- */
-uint64_t bdrv_write_threshold_exceeded(const BlockDriverState *bs,
-                                       const BdrvTrackedRequest *req);
-
 /*
  * bdrv_write_threshold_check_write
  *

diff --git a/tests/unit/test-write-threshold.c b/tests/unit/test-write-threshold.c
index fd40a815b821c6fafb691a58dd5f5cddcfb5ba7d..bb5c1a5217e9583589228d12f594e7c8cacb9876 100644 (file)
--- a/tests/unit/test-write-threshold.c
+++ b/tests/unit/test-write-threshold.c
@@ -18,8 +18,6 @@ static void test_threshold_not_set_on_init(void)
     BlockDriverState bs;
     memset(&bs, 0, sizeof(bs));
 
-    g_assert(!bdrv_write_threshold_is_set(&bs));
-
     res = bdrv_write_threshold_get(&bs);
     g_assert_cmpint(res, ==, 0);
 }
@@ -33,8 +31,6 @@ static void test_threshold_set_get(void)
 
     bdrv_write_threshold_set(&bs, threshold);
 
-    g_assert(bdrv_write_threshold_is_set(&bs));
-
     res = bdrv_write_threshold_get(&bs);
     g_assert_cmpint(res, ==, threshold);
 }