block/dirty-bitmap.c | 81 +++++++++++++++++++--------------------------------- 1 file changed, 30 insertions(+), 51 deletions(-)
QLIST_REMOVE does not require walking the list, and once the "bitmap"
argument is removed from bdrv_do_release_matching_dirty_bitmap_locked
the code simplifies a lot and it is worth inlining everything in the
callers of bdrv_do_release_matching_dirty_bitmap.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
block/dirty-bitmap.c | 81 +++++++++++++++++++---------------------------------
1 file changed, 30 insertions(+), 51 deletions(-)
diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c
index 13bb5066a4..c0fb49bf7b 100644
--- a/block/dirty-bitmap.c
+++ b/block/dirty-bitmap.c
@@ -250,48 +250,15 @@ void bdrv_dirty_bitmap_enable_successor(BdrvDirtyBitmap *bitmap)
}
/* Called within bdrv_dirty_bitmap_lock..unlock */
-static void bdrv_do_release_matching_dirty_bitmap_locked(
- BlockDriverState *bs, BdrvDirtyBitmap *bitmap,
- bool (*cond)(BdrvDirtyBitmap *bitmap))
+static void bdrv_release_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap)
{
- BdrvDirtyBitmap *bm, *next;
-
- QLIST_FOREACH_SAFE(bm, &bs->dirty_bitmaps, list, next) {
- if ((!bitmap || bm == bitmap) && (!cond || cond(bm))) {
- assert(!bm->active_iterators);
- assert(!bdrv_dirty_bitmap_frozen(bm));
- assert(!bm->meta);
- QLIST_REMOVE(bm, list);
- hbitmap_free(bm->bitmap);
- g_free(bm->name);
- g_free(bm);
-
- if (bitmap) {
- return;
- }
- }
- }
-
- if (bitmap) {
- abort();
- }
-}
-
-/* Called with BQL taken. */
-static void bdrv_do_release_matching_dirty_bitmap(
- BlockDriverState *bs, BdrvDirtyBitmap *bitmap,
- bool (*cond)(BdrvDirtyBitmap *bitmap))
-{
- bdrv_dirty_bitmaps_lock(bs);
- bdrv_do_release_matching_dirty_bitmap_locked(bs, bitmap, cond);
- bdrv_dirty_bitmaps_unlock(bs);
-}
-
-/* Called within bdrv_dirty_bitmap_lock..unlock */
-static void bdrv_release_dirty_bitmap_locked(BlockDriverState *bs,
- BdrvDirtyBitmap *bitmap)
-{
- bdrv_do_release_matching_dirty_bitmap_locked(bs, bitmap, NULL);
+ assert(!bitmap->active_iterators);
+ assert(!bdrv_dirty_bitmap_frozen(bitmap));
+ assert(!bitmap->meta);
+ QLIST_REMOVE(bitmap, list);
+ hbitmap_free(bitmap->bitmap);
+ g_free(bitmap->name);
+ g_free(bitmap);
}
/**
@@ -344,7 +311,7 @@ BdrvDirtyBitmap *bdrv_reclaim_dirty_bitmap_locked(BlockDriverState *bs,
error_setg(errp, "Merging of parent and successor bitmap failed");
return NULL;
}
- bdrv_release_dirty_bitmap_locked(bs, successor);
+ bdrv_release_dirty_bitmap_locked(successor);
parent->successor = NULL;
return parent;
@@ -382,15 +349,12 @@ void bdrv_dirty_bitmap_truncate(BlockDriverState *bs, int64_t bytes)
bdrv_dirty_bitmaps_unlock(bs);
}
-static bool bdrv_dirty_bitmap_has_name(BdrvDirtyBitmap *bitmap)
-{
- return !!bdrv_dirty_bitmap_name(bitmap);
-}
-
/* Called with BQL taken. */
void bdrv_release_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap)
{
- bdrv_do_release_matching_dirty_bitmap(bs, bitmap, NULL);
+ bdrv_dirty_bitmaps_lock(bs);
+ bdrv_release_dirty_bitmap_locked(bitmap);
+ bdrv_dirty_bitmaps_unlock(bs);
}
/**
@@ -401,7 +365,15 @@ void bdrv_release_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap)
*/
void bdrv_release_named_dirty_bitmaps(BlockDriverState *bs)
{
- bdrv_do_release_matching_dirty_bitmap(bs, NULL, bdrv_dirty_bitmap_has_name);
+ BdrvDirtyBitmap *bm, *next;
+
+ bdrv_dirty_bitmaps_lock(bs);
+ QLIST_FOREACH_SAFE(bm, &bs->dirty_bitmaps, list, next) {
+ if (bdrv_dirty_bitmap_name(bm)) {
+ bdrv_release_dirty_bitmap_locked(bm);
+ }
+ }
+ bdrv_dirty_bitmaps_unlock(bs);
}
/**
@@ -412,8 +384,15 @@ void bdrv_release_named_dirty_bitmaps(BlockDriverState *bs)
*/
void bdrv_release_persistent_dirty_bitmaps(BlockDriverState *bs)
{
- bdrv_do_release_matching_dirty_bitmap(bs, NULL,
- bdrv_dirty_bitmap_get_persistance);
+ BdrvDirtyBitmap *bm, *next;
+
+ bdrv_dirty_bitmaps_lock(bs);
+ QLIST_FOREACH_SAFE(bm, &bs->dirty_bitmaps, list, next) {
+ if (bdrv_dirty_bitmap_get_persistance(bm)) {
+ bdrv_release_dirty_bitmap_locked(bm);
+ }
+ }
+ bdrv_dirty_bitmaps_unlock(bs);
}
/**
--
2.16.2
23.03.2018 19:42, Paolo Bonzini wrote: > QLIST_REMOVE does not require walking the list, and once the "bitmap" > argument is removed from bdrv_do_release_matching_dirty_bitmap_locked > the code simplifies a lot and it is worth inlining everything in the > callers of bdrv_do_release_matching_dirty_bitmap. > > Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> > --- > block/dirty-bitmap.c | 81 +++++++++++++++++++--------------------------------- > 1 file changed, 30 insertions(+), 51 deletions(-) > > diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c > index 13bb5066a4..c0fb49bf7b 100644 > --- a/block/dirty-bitmap.c > +++ b/block/dirty-bitmap.c > @@ -250,48 +250,15 @@ void bdrv_dirty_bitmap_enable_successor(BdrvDirtyBitmap *bitmap) > } > > /* Called within bdrv_dirty_bitmap_lock..unlock */ Worth adding "Called with BQL taken" to the comment? > -static void bdrv_do_release_matching_dirty_bitmap_locked( > - BlockDriverState *bs, BdrvDirtyBitmap *bitmap, > - bool (*cond)(BdrvDirtyBitmap *bitmap)) > +static void bdrv_release_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap) > { > - BdrvDirtyBitmap *bm, *next; > - > - QLIST_FOREACH_SAFE(bm, &bs->dirty_bitmaps, list, next) { > - if ((!bitmap || bm == bitmap) && (!cond || cond(bm))) { > - assert(!bm->active_iterators); > - assert(!bdrv_dirty_bitmap_frozen(bm)); > - assert(!bm->meta); > - QLIST_REMOVE(bm, list); > - hbitmap_free(bm->bitmap); > - g_free(bm->name); > - g_free(bm); > - > - if (bitmap) { > - return; > - } > - } > - } > - > - if (bitmap) { > - abort(); > - } > -} > - > -/* Called with BQL taken. */ > -static void bdrv_do_release_matching_dirty_bitmap( > - BlockDriverState *bs, BdrvDirtyBitmap *bitmap, > - bool (*cond)(BdrvDirtyBitmap *bitmap)) > -{ > - bdrv_dirty_bitmaps_lock(bs); > - bdrv_do_release_matching_dirty_bitmap_locked(bs, bitmap, cond); > - bdrv_dirty_bitmaps_unlock(bs); > -} > - > -/* Called within bdrv_dirty_bitmap_lock..unlock */ > -static void bdrv_release_dirty_bitmap_locked(BlockDriverState *bs, > - BdrvDirtyBitmap *bitmap) > -{ > - bdrv_do_release_matching_dirty_bitmap_locked(bs, bitmap, NULL); > + assert(!bitmap->active_iterators); > + assert(!bdrv_dirty_bitmap_frozen(bitmap)); > + assert(!bitmap->meta); > + QLIST_REMOVE(bitmap, list); > + hbitmap_free(bitmap->bitmap); > + g_free(bitmap->name); > + g_free(bitmap); > } > > /** > @@ -344,7 +311,7 @@ BdrvDirtyBitmap *bdrv_reclaim_dirty_bitmap_locked(BlockDriverState *bs, > error_setg(errp, "Merging of parent and successor bitmap failed"); > return NULL; > } > - bdrv_release_dirty_bitmap_locked(bs, successor); > + bdrv_release_dirty_bitmap_locked(successor); > parent->successor = NULL; > > return parent; > @@ -382,15 +349,12 @@ void bdrv_dirty_bitmap_truncate(BlockDriverState *bs, int64_t bytes) > bdrv_dirty_bitmaps_unlock(bs); > } > > -static bool bdrv_dirty_bitmap_has_name(BdrvDirtyBitmap *bitmap) > -{ > - return !!bdrv_dirty_bitmap_name(bitmap); > -} > - > /* Called with BQL taken. */ > void bdrv_release_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap) > { > - bdrv_do_release_matching_dirty_bitmap(bs, bitmap, NULL); > + bdrv_dirty_bitmaps_lock(bs); > + bdrv_release_dirty_bitmap_locked(bitmap); > + bdrv_dirty_bitmaps_unlock(bs); > } > > /** > @@ -401,7 +365,15 @@ void bdrv_release_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap) > */ > void bdrv_release_named_dirty_bitmaps(BlockDriverState *bs) > { > - bdrv_do_release_matching_dirty_bitmap(bs, NULL, bdrv_dirty_bitmap_has_name); > + BdrvDirtyBitmap *bm, *next; > + > + bdrv_dirty_bitmaps_lock(bs); > + QLIST_FOREACH_SAFE(bm, &bs->dirty_bitmaps, list, next) { > + if (bdrv_dirty_bitmap_name(bm)) { > + bdrv_release_dirty_bitmap_locked(bm); > + } > + } > + bdrv_dirty_bitmaps_unlock(bs); > } > > /** > @@ -412,8 +384,15 @@ void bdrv_release_named_dirty_bitmaps(BlockDriverState *bs) > */ worth adding "Called with BQL taken." to the comment? bdrv_release_named_dirty_bitmaps functions has it. > void bdrv_release_persistent_dirty_bitmaps(BlockDriverState *bs) > { > - bdrv_do_release_matching_dirty_bitmap(bs, NULL, > - bdrv_dirty_bitmap_get_persistance); > + BdrvDirtyBitmap *bm, *next; > + > + bdrv_dirty_bitmaps_lock(bs); > + QLIST_FOREACH_SAFE(bm, &bs->dirty_bitmaps, list, next) { > + if (bdrv_dirty_bitmap_get_persistance(bm)) { > + bdrv_release_dirty_bitmap_locked(bm); > + } > + } > + bdrv_dirty_bitmaps_unlock(bs); > } > > /** anyway, Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> -- Best regards, Vladimir
On 26/03/2018 12:24, Vladimir Sementsov-Ogievskiy wrote: > 23.03.2018 19:42, Paolo Bonzini wrote: >> QLIST_REMOVE does not require walking the list, and once the "bitmap" >> argument is removed from bdrv_do_release_matching_dirty_bitmap_locked >> the code simplifies a lot and it is worth inlining everything in the >> callers of bdrv_do_release_matching_dirty_bitmap. >> >> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> >> --- >> block/dirty-bitmap.c | 81 >> +++++++++++++++++++--------------------------------- >> 1 file changed, 30 insertions(+), 51 deletions(-) >> >> diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c >> index 13bb5066a4..c0fb49bf7b 100644 >> --- a/block/dirty-bitmap.c >> +++ b/block/dirty-bitmap.c >> @@ -250,48 +250,15 @@ void >> bdrv_dirty_bitmap_enable_successor(BdrvDirtyBitmap *bitmap) >> } >> /* Called within bdrv_dirty_bitmap_lock..unlock */ > > Worth adding "Called with BQL taken" to the comment? Yes, good idea. >> +static void bdrv_release_dirty_bitmap_locked(BdrvDirtyBitmap *bitmap) > worth adding "Called with BQL taken." to the comment? > bdrv_release_named_dirty_bitmaps functions has it. > >> void bdrv_release_persistent_dirty_bitmaps(BlockDriverState *bs) This is pre-existing, but it's also a good idea. Paolo >> - bdrv_do_release_matching_dirty_bitmap(bs, NULL, >> - >> bdrv_dirty_bitmap_get_persistance); >> + BdrvDirtyBitmap *bm, *next; >> + >> + bdrv_dirty_bitmaps_lock(bs); >> + QLIST_FOREACH_SAFE(bm, &bs->dirty_bitmaps, list, next) { >> + if (bdrv_dirty_bitmap_get_persistance(bm)) { >> + bdrv_release_dirty_bitmap_locked(bm); >> + } >> + } >> + bdrv_dirty_bitmaps_unlock(bs); >> } >> /** > > anyway, > > Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> >
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