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From 145376957366516a0b47f4a83d93b6c0c026e469 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 08:14:44 +0200
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Subject: [PATCH 19/81] raw-posix: return get_block_status data and flags
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RH-Author: Paolo Bonzini <pbonzini@redhat.com>
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Message-id: <1382084091-16636-20-git-send-email-pbonzini@redhat.com>
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Patchwork-id: 55002
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O-Subject: [RHEL 7.0 qemu-kvm PATCH 19/26] raw-posix: return get_block_status data and flags
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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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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 63390a8d14c9006f42bdaab22291c9c97676322d)
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---
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block/raw-posix.c | 17 ++++++++++-------
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1 file changed, 10 insertions(+), 7 deletions(-)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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block/raw-posix.c | 17 ++++++++++-------
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1 files changed, 10 insertions(+), 7 deletions(-)
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diff --git a/block/raw-posix.c b/block/raw-posix.c
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index 9a7c5a8..a829ce0 100644
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--- a/block/raw-posix.c
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+++ b/block/raw-posix.c
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@@ -1089,7 +1089,7 @@ static int64_t coroutine_fn raw_co_get_block_status(BlockDriverState *bs,
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int nb_sectors, int *pnum)
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{
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off_t start, data, hole;
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- int ret;
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+ int64_t ret;
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ret = fd_open(bs);
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if (ret < 0) {
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@@ -1097,6 +1097,7 @@ static int64_t coroutine_fn raw_co_get_block_status(BlockDriverState *bs,
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}
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start = sector_num * BDRV_SECTOR_SIZE;
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+ ret = BDRV_BLOCK_DATA | BDRV_BLOCK_OFFSET_VALID | start;
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#ifdef CONFIG_FIEMAP
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@@ -1114,7 +1115,7 @@ static int64_t coroutine_fn raw_co_get_block_status(BlockDriverState *bs,
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if (ioctl(s->fd, FS_IOC_FIEMAP, &f) == -1) {
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/* Assume everything is allocated. */
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*pnum = nb_sectors;
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- return 1;
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+ return ret;
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}
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if (f.fm.fm_mapped_extents == 0) {
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@@ -1141,7 +1142,7 @@ static int64_t coroutine_fn raw_co_get_block_status(BlockDriverState *bs,
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/* Most likely EINVAL. Assume everything is allocated. */
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*pnum = nb_sectors;
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- return 1;
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+ return ret;
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}
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if (hole > start) {
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@@ -1154,19 +1155,21 @@ static int64_t coroutine_fn raw_co_get_block_status(BlockDriverState *bs,
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}
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}
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#else
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- *pnum = nb_sectors;
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- return 1;
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+ data = 0;
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+ hole = start + nb_sectors * BDRV_SECTOR_SIZE;
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#endif
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if (data <= start) {
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/* On a data extent, compute sectors to the end of the extent. */
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*pnum = MIN(nb_sectors, (hole - start) / BDRV_SECTOR_SIZE);
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- return 1;
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} else {
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/* On a hole, compute sectors to the beginning of the next extent. */
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*pnum = MIN(nb_sectors, (data - start) / BDRV_SECTOR_SIZE);
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- return 0;
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+ ret &= ~BDRV_BLOCK_DATA;
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+ ret |= BDRV_BLOCK_ZERO;
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}
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+
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+ return ret;
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}
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static coroutine_fn BlockDriverAIOCB *raw_aio_discard(BlockDriverState *bs,
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--
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1.7.1
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