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From 48a9eea657b6533556026d5eda813736ab36844b Mon Sep 17 00:00:00 2001
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From: Paolo Bonzini <pbonzini@redhat.com>
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Date: Fri, 18 Oct 2013 08:14:28 +0200
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Subject: [PATCH 03/81] cow: do not call bdrv_co_is_allocated
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RH-Author: Paolo Bonzini <pbonzini@redhat.com>
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Message-id: <1382084091-16636-4-git-send-email-pbonzini@redhat.com>
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Patchwork-id: 54987
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O-Subject: [RHEL 7.0 qemu-kvm PATCH 03/26] cow: do not call bdrv_co_is_allocated
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Bugzilla: 989646
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
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As we change bdrv_is_allocated to gather more information from bs and
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bs->file, it will become a bit slower. It is still appropriate for online
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jobs, but not for reads/writes. Call the internal function instead.
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Reviewed-by: Eric Blake <eblake@redhat.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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(cherry picked from commit e641c1e81e54fc14908ff6785ef7d51e42c2e1bb)
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---
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block/cow.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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block/cow.c | 2 +-
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1 files changed, 1 insertions(+), 1 deletions(-)
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diff --git a/block/cow.c b/block/cow.c
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index 2f72334..21bceaa 100644
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--- a/block/cow.c
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+++ b/block/cow.c
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@@ -212,7 +212,7 @@ static int coroutine_fn cow_read(BlockDriverState *bs, int64_t sector_num,
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int ret, n;
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while (nb_sectors > 0) {
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- if (bdrv_co_is_allocated(bs, sector_num, nb_sectors, &n)) {
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+ if (cow_co_is_allocated(bs, sector_num, nb_sectors, &n)) {
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ret = bdrv_pread(bs->file,
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s->cow_sectors_offset + sector_num * 512,
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buf, n * 512);
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--
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1.7.1
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