* [Qemu-devel] [PATCH 0/8] qcow2 cleanup for coroutine-block branch
@ 2011-07-28 7:40 Frediano Ziglio
2011-07-28 7:40 ` [Qemu-devel] [PATCH 1/8] qcow2: removed unused fields Frediano Ziglio
` (7 more replies)
0 siblings, 8 replies; 9+ messages in thread
From: Frediano Ziglio @ 2011-07-28 7:40 UTC (permalink / raw)
To: Kevin Wolf; +Cc: qemu-devel, Frediano Ziglio
This is a collection of patches that remove QCowAIOCB, useless with
coroutines.
It apply to Kevin coroutine-block branch.
I leave all step I did to remove the structure, feel free to collapse
some of them.
I tested with iotests and got no changes (026 fails like coroutine-block
branch).
Frediano Ziglio (8):
qcow2: removed unused fields
qcow2: removed cur_nr_sectors field in QCowAIOCB
qcow2: remove l2meta from QCowAIOCB
qcow2: remove cluster_offset from QCowAIOCB
qcow2: remove common from QCowAIOCB
qcow2: reindent and use while before the big jump
qcow2: removed QCowAIOCB entirely
qcow2: remove memory leak
block/qcow2.c | 396 ++++++++++++++++++++++++---------------------------------
1 files changed, 167 insertions(+), 229 deletions(-)
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Qemu-devel] [PATCH 1/8] qcow2: removed unused fields
2011-07-28 7:40 [Qemu-devel] [PATCH 0/8] qcow2 cleanup for coroutine-block branch Frediano Ziglio
@ 2011-07-28 7:40 ` Frediano Ziglio
2011-07-28 7:40 ` [Qemu-devel] [PATCH 2/8] qcow2: removed cur_nr_sectors field in QCowAIOCB Frediano Ziglio
` (6 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Frediano Ziglio @ 2011-07-28 7:40 UTC (permalink / raw)
To: Kevin Wolf; +Cc: qemu-devel, Frediano Ziglio
Signed-off-by: Frediano Ziglio <freddy77@gmail.com>
---
block/qcow2.c | 10 +++-------
1 files changed, 3 insertions(+), 7 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index edc068e..5c454bb 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -381,11 +381,8 @@ typedef struct QCowAIOCB {
uint64_t bytes_done;
uint64_t cluster_offset;
uint8_t *cluster_data;
- bool is_write;
QEMUIOVector hd_qiov;
- QEMUBH *bh;
QCowL2Meta l2meta;
- QLIST_ENTRY(QCowAIOCB) next_depend;
} QCowAIOCB;
/*
@@ -517,13 +514,12 @@ static int qcow2_aio_read_cb(QCowAIOCB *acb)
static QCowAIOCB *qcow2_aio_setup(BlockDriverState *bs, int64_t sector_num,
QEMUIOVector *qiov, int nb_sectors,
BlockDriverCompletionFunc *cb,
- void *opaque, int is_write, QCowAIOCB *acb)
+ void *opaque, QCowAIOCB *acb)
{
memset(acb, 0, sizeof(*acb));
acb->common.bs = bs;
acb->sector_num = sector_num;
acb->qiov = qiov;
- acb->is_write = is_write;
qemu_iovec_init(&acb->hd_qiov, qiov->niov);
@@ -543,7 +539,7 @@ static int qcow2_co_readv(BlockDriverState *bs, int64_t sector_num,
QCowAIOCB acb;
int ret;
- qcow2_aio_setup(bs, sector_num, qiov, nb_sectors, NULL, NULL, 0, &acb);
+ qcow2_aio_setup(bs, sector_num, qiov, nb_sectors, NULL, NULL, &acb);
qemu_co_mutex_lock(&s->lock);
do {
@@ -658,7 +654,7 @@ static int qcow2_co_writev(BlockDriverState *bs,
QCowAIOCB acb;
int ret;
- qcow2_aio_setup(bs, sector_num, qiov, nb_sectors, NULL, NULL, 1, &acb);
+ qcow2_aio_setup(bs, sector_num, qiov, nb_sectors, NULL, NULL, &acb);
s->cluster_cache_offset = -1; /* disable compressed cache */
qemu_co_mutex_lock(&s->lock);
--
1.7.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [Qemu-devel] [PATCH 2/8] qcow2: removed cur_nr_sectors field in QCowAIOCB
2011-07-28 7:40 [Qemu-devel] [PATCH 0/8] qcow2 cleanup for coroutine-block branch Frediano Ziglio
2011-07-28 7:40 ` [Qemu-devel] [PATCH 1/8] qcow2: removed unused fields Frediano Ziglio
@ 2011-07-28 7:40 ` Frediano Ziglio
2011-07-28 7:40 ` [Qemu-devel] [PATCH 3/8] qcow2: remove l2meta from QCowAIOCB Frediano Ziglio
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Frediano Ziglio @ 2011-07-28 7:40 UTC (permalink / raw)
To: Kevin Wolf; +Cc: qemu-devel, Frediano Ziglio
Signed-off-by: Frediano Ziglio <freddy77@gmail.com>
---
block/qcow2.c | 98 +++++++++++++++++++++++++--------------------------------
1 files changed, 43 insertions(+), 55 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index 5c454bb..0cf4465 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -377,7 +377,6 @@ typedef struct QCowAIOCB {
int64_t sector_num;
QEMUIOVector *qiov;
int remaining_sectors;
- int cur_nr_sectors; /* number of sectors in current iteration */
uint64_t bytes_done;
uint64_t cluster_offset;
uint8_t *cluster_data;
@@ -395,42 +394,22 @@ static int qcow2_aio_read_cb(QCowAIOCB *acb)
BDRVQcowState *s = bs->opaque;
int index_in_cluster, n1;
int ret;
-
- /* post process the read buffer */
- if (!acb->cluster_offset) {
- /* nothing to do */
- } else if (acb->cluster_offset & QCOW_OFLAG_COMPRESSED) {
- /* nothing to do */
- } else {
- if (s->crypt_method) {
- qcow2_encrypt_sectors(s, acb->sector_num, acb->cluster_data,
- acb->cluster_data, acb->cur_nr_sectors, 0, &s->aes_decrypt_key);
- qemu_iovec_reset(&acb->hd_qiov);
- qemu_iovec_copy(&acb->hd_qiov, acb->qiov, acb->bytes_done,
- acb->cur_nr_sectors * 512);
- qemu_iovec_from_buffer(&acb->hd_qiov, acb->cluster_data,
- 512 * acb->cur_nr_sectors);
- }
- }
-
- acb->remaining_sectors -= acb->cur_nr_sectors;
- acb->sector_num += acb->cur_nr_sectors;
- acb->bytes_done += acb->cur_nr_sectors * 512;
+ int cur_nr_sectors; /* number of sectors in current iteration */
if (acb->remaining_sectors == 0) {
/* request completed */
return 0;
}
- /* prepare next AIO request */
- acb->cur_nr_sectors = acb->remaining_sectors;
+ /* prepare next request */
+ cur_nr_sectors = acb->remaining_sectors;
if (s->crypt_method) {
- acb->cur_nr_sectors = MIN(acb->cur_nr_sectors,
+ cur_nr_sectors = MIN(cur_nr_sectors,
QCOW_MAX_CRYPT_CLUSTERS * s->cluster_sectors);
}
ret = qcow2_get_cluster_offset(bs, acb->sector_num << 9,
- &acb->cur_nr_sectors, &acb->cluster_offset);
+ &cur_nr_sectors, &acb->cluster_offset);
if (ret < 0) {
return ret;
}
@@ -439,14 +418,14 @@ static int qcow2_aio_read_cb(QCowAIOCB *acb)
qemu_iovec_reset(&acb->hd_qiov);
qemu_iovec_copy(&acb->hd_qiov, acb->qiov, acb->bytes_done,
- acb->cur_nr_sectors * 512);
+ cur_nr_sectors * 512);
if (!acb->cluster_offset) {
if (bs->backing_hd) {
/* read from the base image */
n1 = qcow2_backing_read1(bs->backing_hd, &acb->hd_qiov,
- acb->sector_num, acb->cur_nr_sectors);
+ acb->sector_num, cur_nr_sectors);
if (n1 > 0) {
BLKDBG_EVENT(bs->file, BLKDBG_READ_BACKING_AIO);
qemu_co_mutex_unlock(&s->lock);
@@ -457,11 +436,9 @@ static int qcow2_aio_read_cb(QCowAIOCB *acb)
return ret;
}
}
- return 1;
} else {
/* Note: in this case, no need to wait */
- qemu_iovec_memset(&acb->hd_qiov, 0, 512 * acb->cur_nr_sectors);
- return 1;
+ qemu_iovec_memset(&acb->hd_qiov, 0, 512 * cur_nr_sectors);
}
} else if (acb->cluster_offset & QCOW_OFLAG_COMPRESSED) {
/* add AIO support for compressed blocks ? */
@@ -472,9 +449,7 @@ static int qcow2_aio_read_cb(QCowAIOCB *acb)
qemu_iovec_from_buffer(&acb->hd_qiov,
s->cluster_cache + index_in_cluster * 512,
- 512 * acb->cur_nr_sectors);
-
- return 1;
+ 512 * cur_nr_sectors);
} else {
if ((acb->cluster_offset & 511) != 0) {
return -EIO;
@@ -490,24 +465,37 @@ static int qcow2_aio_read_cb(QCowAIOCB *acb)
qemu_mallocz(QCOW_MAX_CRYPT_CLUSTERS * s->cluster_size);
}
- assert(acb->cur_nr_sectors <=
+ assert(cur_nr_sectors <=
QCOW_MAX_CRYPT_CLUSTERS * s->cluster_sectors);
qemu_iovec_reset(&acb->hd_qiov);
qemu_iovec_add(&acb->hd_qiov, acb->cluster_data,
- 512 * acb->cur_nr_sectors);
+ 512 * cur_nr_sectors);
}
BLKDBG_EVENT(bs->file, BLKDBG_READ_AIO);
qemu_co_mutex_unlock(&s->lock);
ret = bdrv_co_readv(bs->file,
(acb->cluster_offset >> 9) + index_in_cluster,
- acb->cur_nr_sectors, &acb->hd_qiov);
+ cur_nr_sectors, &acb->hd_qiov);
qemu_co_mutex_lock(&s->lock);
if (ret < 0) {
return ret;
}
+ if (s->crypt_method) {
+ qcow2_encrypt_sectors(s, acb->sector_num, acb->cluster_data,
+ acb->cluster_data, cur_nr_sectors, 0, &s->aes_decrypt_key);
+ qemu_iovec_reset(&acb->hd_qiov);
+ qemu_iovec_copy(&acb->hd_qiov, acb->qiov, acb->bytes_done,
+ cur_nr_sectors * 512);
+ qemu_iovec_from_buffer(&acb->hd_qiov, acb->cluster_data,
+ 512 * cur_nr_sectors);
+ }
}
+ acb->remaining_sectors -= cur_nr_sectors;
+ acb->sector_num += cur_nr_sectors;
+ acb->bytes_done += cur_nr_sectors * 512;
+
return 1;
}
@@ -525,7 +513,6 @@ static QCowAIOCB *qcow2_aio_setup(BlockDriverState *bs, int64_t sector_num,
acb->bytes_done = 0;
acb->remaining_sectors = nb_sectors;
- acb->cur_nr_sectors = 0;
acb->cluster_offset = 0;
acb->l2meta.nb_clusters = 0;
qemu_co_queue_init(&acb->l2meta.dependent_requests);
@@ -578,18 +565,7 @@ static int qcow2_aio_write_cb(QCowAIOCB *acb)
int index_in_cluster;
int n_end;
int ret;
-
- ret = qcow2_alloc_cluster_link_l2(bs, &acb->l2meta);
-
- run_dependent_requests(s, &acb->l2meta);
-
- if (ret < 0) {
- return ret;
- }
-
- acb->remaining_sectors -= acb->cur_nr_sectors;
- acb->sector_num += acb->cur_nr_sectors;
- acb->bytes_done += acb->cur_nr_sectors * 512;
+ int cur_nr_sectors; /* number of sectors in current iteration */
if (acb->remaining_sectors == 0) {
/* request completed */
@@ -603,7 +579,7 @@ static int qcow2_aio_write_cb(QCowAIOCB *acb)
n_end = QCOW_MAX_CRYPT_CLUSTERS * s->cluster_sectors;
ret = qcow2_alloc_cluster_offset(bs, acb->sector_num << 9,
- index_in_cluster, n_end, &acb->cur_nr_sectors, &acb->l2meta);
+ index_in_cluster, n_end, &cur_nr_sectors, &acb->l2meta);
if (ret < 0) {
return ret;
}
@@ -613,7 +589,7 @@ static int qcow2_aio_write_cb(QCowAIOCB *acb)
qemu_iovec_reset(&acb->hd_qiov);
qemu_iovec_copy(&acb->hd_qiov, acb->qiov, acb->bytes_done,
- acb->cur_nr_sectors * 512);
+ cur_nr_sectors * 512);
if (s->crypt_method) {
if (!acb->cluster_data) {
@@ -625,23 +601,35 @@ static int qcow2_aio_write_cb(QCowAIOCB *acb)
qemu_iovec_to_buffer(&acb->hd_qiov, acb->cluster_data);
qcow2_encrypt_sectors(s, acb->sector_num, acb->cluster_data,
- acb->cluster_data, acb->cur_nr_sectors, 1, &s->aes_encrypt_key);
+ acb->cluster_data, cur_nr_sectors, 1, &s->aes_encrypt_key);
qemu_iovec_reset(&acb->hd_qiov);
qemu_iovec_add(&acb->hd_qiov, acb->cluster_data,
- acb->cur_nr_sectors * 512);
+ cur_nr_sectors * 512);
}
BLKDBG_EVENT(bs->file, BLKDBG_WRITE_AIO);
qemu_co_mutex_unlock(&s->lock);
ret = bdrv_co_writev(bs->file,
(acb->cluster_offset >> 9) + index_in_cluster,
- acb->cur_nr_sectors, &acb->hd_qiov);
+ cur_nr_sectors, &acb->hd_qiov);
qemu_co_mutex_lock(&s->lock);
if (ret < 0) {
return ret;
}
+ ret = qcow2_alloc_cluster_link_l2(bs, &acb->l2meta);
+
+ run_dependent_requests(s, &acb->l2meta);
+
+ if (ret < 0) {
+ return ret;
+ }
+
+ acb->remaining_sectors -= cur_nr_sectors;
+ acb->sector_num += cur_nr_sectors;
+ acb->bytes_done += cur_nr_sectors * 512;
+
return 1;
}
--
1.7.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [Qemu-devel] [PATCH 3/8] qcow2: remove l2meta from QCowAIOCB
2011-07-28 7:40 [Qemu-devel] [PATCH 0/8] qcow2 cleanup for coroutine-block branch Frediano Ziglio
2011-07-28 7:40 ` [Qemu-devel] [PATCH 1/8] qcow2: removed unused fields Frediano Ziglio
2011-07-28 7:40 ` [Qemu-devel] [PATCH 2/8] qcow2: removed cur_nr_sectors field in QCowAIOCB Frediano Ziglio
@ 2011-07-28 7:40 ` Frediano Ziglio
2011-07-28 7:40 ` [Qemu-devel] [PATCH 4/8] qcow2: remove cluster_offset " Frediano Ziglio
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Frediano Ziglio @ 2011-07-28 7:40 UTC (permalink / raw)
To: Kevin Wolf; +Cc: qemu-devel, Frediano Ziglio
Signed-off-by: Frediano Ziglio <freddy77@gmail.com>
---
block/qcow2.c | 15 ++++++++-------
1 files changed, 8 insertions(+), 7 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index 0cf4465..adf31ce 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -381,7 +381,6 @@ typedef struct QCowAIOCB {
uint64_t cluster_offset;
uint8_t *cluster_data;
QEMUIOVector hd_qiov;
- QCowL2Meta l2meta;
} QCowAIOCB;
/*
@@ -514,8 +513,6 @@ static QCowAIOCB *qcow2_aio_setup(BlockDriverState *bs, int64_t sector_num,
acb->bytes_done = 0;
acb->remaining_sectors = nb_sectors;
acb->cluster_offset = 0;
- acb->l2meta.nb_clusters = 0;
- qemu_co_queue_init(&acb->l2meta.dependent_requests);
return acb;
}
@@ -566,6 +563,10 @@ static int qcow2_aio_write_cb(QCowAIOCB *acb)
int n_end;
int ret;
int cur_nr_sectors; /* number of sectors in current iteration */
+ QCowL2Meta l2meta;
+
+ l2meta.nb_clusters = 0;
+ qemu_co_queue_init(&l2meta.dependent_requests);
if (acb->remaining_sectors == 0) {
/* request completed */
@@ -579,12 +580,12 @@ static int qcow2_aio_write_cb(QCowAIOCB *acb)
n_end = QCOW_MAX_CRYPT_CLUSTERS * s->cluster_sectors;
ret = qcow2_alloc_cluster_offset(bs, acb->sector_num << 9,
- index_in_cluster, n_end, &cur_nr_sectors, &acb->l2meta);
+ index_in_cluster, n_end, &cur_nr_sectors, &l2meta);
if (ret < 0) {
return ret;
}
- acb->cluster_offset = acb->l2meta.cluster_offset;
+ acb->cluster_offset = l2meta.cluster_offset;
assert((acb->cluster_offset & 511) == 0);
qemu_iovec_reset(&acb->hd_qiov);
@@ -618,9 +619,9 @@ static int qcow2_aio_write_cb(QCowAIOCB *acb)
return ret;
}
- ret = qcow2_alloc_cluster_link_l2(bs, &acb->l2meta);
+ ret = qcow2_alloc_cluster_link_l2(bs, &l2meta);
- run_dependent_requests(s, &acb->l2meta);
+ run_dependent_requests(s, &l2meta);
if (ret < 0) {
return ret;
--
1.7.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [Qemu-devel] [PATCH 4/8] qcow2: remove cluster_offset from QCowAIOCB
2011-07-28 7:40 [Qemu-devel] [PATCH 0/8] qcow2 cleanup for coroutine-block branch Frediano Ziglio
` (2 preceding siblings ...)
2011-07-28 7:40 ` [Qemu-devel] [PATCH 3/8] qcow2: remove l2meta from QCowAIOCB Frediano Ziglio
@ 2011-07-28 7:40 ` Frediano Ziglio
2011-07-28 7:40 ` [Qemu-devel] [PATCH 5/8] qcow2: remove common " Frediano Ziglio
` (3 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Frediano Ziglio @ 2011-07-28 7:40 UTC (permalink / raw)
To: Kevin Wolf; +Cc: qemu-devel, Frediano Ziglio
Signed-off-by: Frediano Ziglio <freddy77@gmail.com>
---
block/qcow2.c | 22 +++++++++++-----------
1 files changed, 11 insertions(+), 11 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index adf31ce..446946e 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -378,7 +378,6 @@ typedef struct QCowAIOCB {
QEMUIOVector *qiov;
int remaining_sectors;
uint64_t bytes_done;
- uint64_t cluster_offset;
uint8_t *cluster_data;
QEMUIOVector hd_qiov;
} QCowAIOCB;
@@ -394,6 +393,7 @@ static int qcow2_aio_read_cb(QCowAIOCB *acb)
int index_in_cluster, n1;
int ret;
int cur_nr_sectors; /* number of sectors in current iteration */
+ uint64_t cluster_offset = 0;
if (acb->remaining_sectors == 0) {
/* request completed */
@@ -408,7 +408,7 @@ static int qcow2_aio_read_cb(QCowAIOCB *acb)
}
ret = qcow2_get_cluster_offset(bs, acb->sector_num << 9,
- &cur_nr_sectors, &acb->cluster_offset);
+ &cur_nr_sectors, &cluster_offset);
if (ret < 0) {
return ret;
}
@@ -419,7 +419,7 @@ static int qcow2_aio_read_cb(QCowAIOCB *acb)
qemu_iovec_copy(&acb->hd_qiov, acb->qiov, acb->bytes_done,
cur_nr_sectors * 512);
- if (!acb->cluster_offset) {
+ if (!cluster_offset) {
if (bs->backing_hd) {
/* read from the base image */
@@ -439,9 +439,9 @@ static int qcow2_aio_read_cb(QCowAIOCB *acb)
/* Note: in this case, no need to wait */
qemu_iovec_memset(&acb->hd_qiov, 0, 512 * cur_nr_sectors);
}
- } else if (acb->cluster_offset & QCOW_OFLAG_COMPRESSED) {
+ } else if (cluster_offset & QCOW_OFLAG_COMPRESSED) {
/* add AIO support for compressed blocks ? */
- ret = qcow2_decompress_cluster(bs, acb->cluster_offset);
+ ret = qcow2_decompress_cluster(bs, cluster_offset);
if (ret < 0) {
return ret;
}
@@ -450,7 +450,7 @@ static int qcow2_aio_read_cb(QCowAIOCB *acb)
s->cluster_cache + index_in_cluster * 512,
512 * cur_nr_sectors);
} else {
- if ((acb->cluster_offset & 511) != 0) {
+ if ((cluster_offset & 511) != 0) {
return -EIO;
}
@@ -474,7 +474,7 @@ static int qcow2_aio_read_cb(QCowAIOCB *acb)
BLKDBG_EVENT(bs->file, BLKDBG_READ_AIO);
qemu_co_mutex_unlock(&s->lock);
ret = bdrv_co_readv(bs->file,
- (acb->cluster_offset >> 9) + index_in_cluster,
+ (cluster_offset >> 9) + index_in_cluster,
cur_nr_sectors, &acb->hd_qiov);
qemu_co_mutex_lock(&s->lock);
if (ret < 0) {
@@ -512,7 +512,6 @@ static QCowAIOCB *qcow2_aio_setup(BlockDriverState *bs, int64_t sector_num,
acb->bytes_done = 0;
acb->remaining_sectors = nb_sectors;
- acb->cluster_offset = 0;
return acb;
}
@@ -564,6 +563,7 @@ static int qcow2_aio_write_cb(QCowAIOCB *acb)
int ret;
int cur_nr_sectors; /* number of sectors in current iteration */
QCowL2Meta l2meta;
+ uint64_t cluster_offset;
l2meta.nb_clusters = 0;
qemu_co_queue_init(&l2meta.dependent_requests);
@@ -585,8 +585,8 @@ static int qcow2_aio_write_cb(QCowAIOCB *acb)
return ret;
}
- acb->cluster_offset = l2meta.cluster_offset;
- assert((acb->cluster_offset & 511) == 0);
+ cluster_offset = l2meta.cluster_offset;
+ assert((cluster_offset & 511) == 0);
qemu_iovec_reset(&acb->hd_qiov);
qemu_iovec_copy(&acb->hd_qiov, acb->qiov, acb->bytes_done,
@@ -612,7 +612,7 @@ static int qcow2_aio_write_cb(QCowAIOCB *acb)
BLKDBG_EVENT(bs->file, BLKDBG_WRITE_AIO);
qemu_co_mutex_unlock(&s->lock);
ret = bdrv_co_writev(bs->file,
- (acb->cluster_offset >> 9) + index_in_cluster,
+ (cluster_offset >> 9) + index_in_cluster,
cur_nr_sectors, &acb->hd_qiov);
qemu_co_mutex_lock(&s->lock);
if (ret < 0) {
--
1.7.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [Qemu-devel] [PATCH 5/8] qcow2: remove common from QCowAIOCB
2011-07-28 7:40 [Qemu-devel] [PATCH 0/8] qcow2 cleanup for coroutine-block branch Frediano Ziglio
` (3 preceding siblings ...)
2011-07-28 7:40 ` [Qemu-devel] [PATCH 4/8] qcow2: remove cluster_offset " Frediano Ziglio
@ 2011-07-28 7:40 ` Frediano Ziglio
2011-07-28 7:40 ` [Qemu-devel] [PATCH 6/8] qcow2: reindent and use while before the big jump Frediano Ziglio
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: Frediano Ziglio @ 2011-07-28 7:40 UTC (permalink / raw)
To: Kevin Wolf; +Cc: qemu-devel, Frediano Ziglio
Signed-off-by: Frediano Ziglio <freddy77@gmail.com>
---
block/qcow2.c | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index 446946e..c7445cc 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -373,7 +373,7 @@ int qcow2_backing_read1(BlockDriverState *bs, QEMUIOVector *qiov,
}
typedef struct QCowAIOCB {
- BlockDriverAIOCB common;
+ BlockDriverState *bs;
int64_t sector_num;
QEMUIOVector *qiov;
int remaining_sectors;
@@ -388,7 +388,7 @@ typedef struct QCowAIOCB {
*/
static int qcow2_aio_read_cb(QCowAIOCB *acb)
{
- BlockDriverState *bs = acb->common.bs;
+ BlockDriverState *bs = acb->bs;
BDRVQcowState *s = bs->opaque;
int index_in_cluster, n1;
int ret;
@@ -504,7 +504,7 @@ static QCowAIOCB *qcow2_aio_setup(BlockDriverState *bs, int64_t sector_num,
void *opaque, QCowAIOCB *acb)
{
memset(acb, 0, sizeof(*acb));
- acb->common.bs = bs;
+ acb->bs = bs;
acb->sector_num = sector_num;
acb->qiov = qiov;
@@ -556,7 +556,7 @@ static void run_dependent_requests(BDRVQcowState *s, QCowL2Meta *m)
*/
static int qcow2_aio_write_cb(QCowAIOCB *acb)
{
- BlockDriverState *bs = acb->common.bs;
+ BlockDriverState *bs = acb->bs;
BDRVQcowState *s = bs->opaque;
int index_in_cluster;
int n_end;
--
1.7.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [Qemu-devel] [PATCH 6/8] qcow2: reindent and use while before the big jump
2011-07-28 7:40 [Qemu-devel] [PATCH 0/8] qcow2 cleanup for coroutine-block branch Frediano Ziglio
` (4 preceding siblings ...)
2011-07-28 7:40 ` [Qemu-devel] [PATCH 5/8] qcow2: remove common " Frediano Ziglio
@ 2011-07-28 7:40 ` Frediano Ziglio
2011-07-28 7:40 ` [Qemu-devel] [PATCH 7/8] qcow2: removed QCowAIOCB entirely Frediano Ziglio
2011-07-28 7:40 ` [Qemu-devel] [PATCH 8/8] qcow2: remove memory leak Frediano Ziglio
7 siblings, 0 replies; 9+ messages in thread
From: Frediano Ziglio @ 2011-07-28 7:40 UTC (permalink / raw)
To: Kevin Wolf; +Cc: qemu-devel, Frediano Ziglio
prepare to remove read/write callbacks
Signed-off-by: Frediano Ziglio <freddy77@gmail.com>
---
block/qcow2.c | 272 ++++++++++++++++++++++++++++-----------------------------
1 files changed, 135 insertions(+), 137 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index c7445cc..dfb969e 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -395,107 +395,105 @@ static int qcow2_aio_read_cb(QCowAIOCB *acb)
int cur_nr_sectors; /* number of sectors in current iteration */
uint64_t cluster_offset = 0;
- if (acb->remaining_sectors == 0) {
- /* request completed */
- return 0;
- }
-
- /* prepare next request */
- cur_nr_sectors = acb->remaining_sectors;
- if (s->crypt_method) {
- cur_nr_sectors = MIN(cur_nr_sectors,
- QCOW_MAX_CRYPT_CLUSTERS * s->cluster_sectors);
- }
+ while (acb->remaining_sectors != 0) {
- ret = qcow2_get_cluster_offset(bs, acb->sector_num << 9,
- &cur_nr_sectors, &cluster_offset);
- if (ret < 0) {
- return ret;
- }
-
- index_in_cluster = acb->sector_num & (s->cluster_sectors - 1);
-
- qemu_iovec_reset(&acb->hd_qiov);
- qemu_iovec_copy(&acb->hd_qiov, acb->qiov, acb->bytes_done,
- cur_nr_sectors * 512);
-
- if (!cluster_offset) {
-
- if (bs->backing_hd) {
- /* read from the base image */
- n1 = qcow2_backing_read1(bs->backing_hd, &acb->hd_qiov,
- acb->sector_num, cur_nr_sectors);
- if (n1 > 0) {
- BLKDBG_EVENT(bs->file, BLKDBG_READ_BACKING_AIO);
- qemu_co_mutex_unlock(&s->lock);
- ret = bdrv_co_readv(bs->backing_hd, acb->sector_num,
- n1, &acb->hd_qiov);
- qemu_co_mutex_lock(&s->lock);
- if (ret < 0) {
- return ret;
- }
- }
- } else {
- /* Note: in this case, no need to wait */
- qemu_iovec_memset(&acb->hd_qiov, 0, 512 * cur_nr_sectors);
+ /* prepare next request */
+ cur_nr_sectors = acb->remaining_sectors;
+ if (s->crypt_method) {
+ cur_nr_sectors = MIN(cur_nr_sectors,
+ QCOW_MAX_CRYPT_CLUSTERS * s->cluster_sectors);
}
- } else if (cluster_offset & QCOW_OFLAG_COMPRESSED) {
- /* add AIO support for compressed blocks ? */
- ret = qcow2_decompress_cluster(bs, cluster_offset);
+
+ ret = qcow2_get_cluster_offset(bs, acb->sector_num << 9,
+ &cur_nr_sectors, &cluster_offset);
if (ret < 0) {
return ret;
}
- qemu_iovec_from_buffer(&acb->hd_qiov,
- s->cluster_cache + index_in_cluster * 512,
- 512 * cur_nr_sectors);
- } else {
- if ((cluster_offset & 511) != 0) {
- return -EIO;
- }
+ index_in_cluster = acb->sector_num & (s->cluster_sectors - 1);
- if (s->crypt_method) {
- /*
- * For encrypted images, read everything into a temporary
- * contiguous buffer on which the AES functions can work.
- */
- if (!acb->cluster_data) {
- acb->cluster_data =
- qemu_mallocz(QCOW_MAX_CRYPT_CLUSTERS * s->cluster_size);
+ qemu_iovec_reset(&acb->hd_qiov);
+ qemu_iovec_copy(&acb->hd_qiov, acb->qiov, acb->bytes_done,
+ cur_nr_sectors * 512);
+
+ if (!cluster_offset) {
+
+ if (bs->backing_hd) {
+ /* read from the base image */
+ n1 = qcow2_backing_read1(bs->backing_hd, &acb->hd_qiov,
+ acb->sector_num, cur_nr_sectors);
+ if (n1 > 0) {
+ BLKDBG_EVENT(bs->file, BLKDBG_READ_BACKING_AIO);
+ qemu_co_mutex_unlock(&s->lock);
+ ret = bdrv_co_readv(bs->backing_hd, acb->sector_num,
+ n1, &acb->hd_qiov);
+ qemu_co_mutex_lock(&s->lock);
+ if (ret < 0) {
+ return ret;
+ }
+ }
+ } else {
+ /* Note: in this case, no need to wait */
+ qemu_iovec_memset(&acb->hd_qiov, 0, 512 * cur_nr_sectors);
+ }
+ } else if (cluster_offset & QCOW_OFLAG_COMPRESSED) {
+ /* add AIO support for compressed blocks ? */
+ ret = qcow2_decompress_cluster(bs, cluster_offset);
+ if (ret < 0) {
+ return ret;
}
- assert(cur_nr_sectors <=
- QCOW_MAX_CRYPT_CLUSTERS * s->cluster_sectors);
- qemu_iovec_reset(&acb->hd_qiov);
- qemu_iovec_add(&acb->hd_qiov, acb->cluster_data,
+ qemu_iovec_from_buffer(&acb->hd_qiov,
+ s->cluster_cache + index_in_cluster * 512,
512 * cur_nr_sectors);
- }
+ } else {
+ if ((cluster_offset & 511) != 0) {
+ return -EIO;
+ }
- BLKDBG_EVENT(bs->file, BLKDBG_READ_AIO);
- qemu_co_mutex_unlock(&s->lock);
- ret = bdrv_co_readv(bs->file,
- (cluster_offset >> 9) + index_in_cluster,
- cur_nr_sectors, &acb->hd_qiov);
- qemu_co_mutex_lock(&s->lock);
- if (ret < 0) {
- return ret;
- }
- if (s->crypt_method) {
- qcow2_encrypt_sectors(s, acb->sector_num, acb->cluster_data,
- acb->cluster_data, cur_nr_sectors, 0, &s->aes_decrypt_key);
- qemu_iovec_reset(&acb->hd_qiov);
- qemu_iovec_copy(&acb->hd_qiov, acb->qiov, acb->bytes_done,
- cur_nr_sectors * 512);
- qemu_iovec_from_buffer(&acb->hd_qiov, acb->cluster_data,
- 512 * cur_nr_sectors);
+ if (s->crypt_method) {
+ /*
+ * For encrypted images, read everything into a temporary
+ * contiguous buffer on which the AES functions can work.
+ */
+ if (!acb->cluster_data) {
+ acb->cluster_data =
+ qemu_mallocz(QCOW_MAX_CRYPT_CLUSTERS * s->cluster_size);
+ }
+
+ assert(cur_nr_sectors <=
+ QCOW_MAX_CRYPT_CLUSTERS * s->cluster_sectors);
+ qemu_iovec_reset(&acb->hd_qiov);
+ qemu_iovec_add(&acb->hd_qiov, acb->cluster_data,
+ 512 * cur_nr_sectors);
+ }
+
+ BLKDBG_EVENT(bs->file, BLKDBG_READ_AIO);
+ qemu_co_mutex_unlock(&s->lock);
+ ret = bdrv_co_readv(bs->file,
+ (cluster_offset >> 9) + index_in_cluster,
+ cur_nr_sectors, &acb->hd_qiov);
+ qemu_co_mutex_lock(&s->lock);
+ if (ret < 0) {
+ return ret;
+ }
+ if (s->crypt_method) {
+ qcow2_encrypt_sectors(s, acb->sector_num, acb->cluster_data,
+ acb->cluster_data, cur_nr_sectors, 0, &s->aes_decrypt_key);
+ qemu_iovec_reset(&acb->hd_qiov);
+ qemu_iovec_copy(&acb->hd_qiov, acb->qiov, acb->bytes_done,
+ cur_nr_sectors * 512);
+ qemu_iovec_from_buffer(&acb->hd_qiov, acb->cluster_data,
+ 512 * cur_nr_sectors);
+ }
}
- }
- acb->remaining_sectors -= cur_nr_sectors;
- acb->sector_num += cur_nr_sectors;
- acb->bytes_done += cur_nr_sectors * 512;
+ acb->remaining_sectors -= cur_nr_sectors;
+ acb->sector_num += cur_nr_sectors;
+ acb->bytes_done += cur_nr_sectors * 512;
+ }
- return 1;
+ return 0;
}
static QCowAIOCB *qcow2_aio_setup(BlockDriverState *bs, int64_t sector_num,
@@ -568,70 +566,70 @@ static int qcow2_aio_write_cb(QCowAIOCB *acb)
l2meta.nb_clusters = 0;
qemu_co_queue_init(&l2meta.dependent_requests);
- if (acb->remaining_sectors == 0) {
- /* request completed */
- return 0;
- }
+ while (acb->remaining_sectors != 0) {
- index_in_cluster = acb->sector_num & (s->cluster_sectors - 1);
- n_end = index_in_cluster + acb->remaining_sectors;
- if (s->crypt_method &&
- n_end > QCOW_MAX_CRYPT_CLUSTERS * s->cluster_sectors)
- n_end = QCOW_MAX_CRYPT_CLUSTERS * s->cluster_sectors;
+ index_in_cluster = acb->sector_num & (s->cluster_sectors - 1);
+ n_end = index_in_cluster + acb->remaining_sectors;
+ if (s->crypt_method &&
+ n_end > QCOW_MAX_CRYPT_CLUSTERS * s->cluster_sectors) {
+ n_end = QCOW_MAX_CRYPT_CLUSTERS * s->cluster_sectors;
+ }
- ret = qcow2_alloc_cluster_offset(bs, acb->sector_num << 9,
- index_in_cluster, n_end, &cur_nr_sectors, &l2meta);
- if (ret < 0) {
- return ret;
- }
+ ret = qcow2_alloc_cluster_offset(bs, acb->sector_num << 9,
+ index_in_cluster, n_end, &cur_nr_sectors, &l2meta);
+ if (ret < 0) {
+ return ret;
+ }
- cluster_offset = l2meta.cluster_offset;
- assert((cluster_offset & 511) == 0);
+ cluster_offset = l2meta.cluster_offset;
+ assert((cluster_offset & 511) == 0);
- qemu_iovec_reset(&acb->hd_qiov);
- qemu_iovec_copy(&acb->hd_qiov, acb->qiov, acb->bytes_done,
- cur_nr_sectors * 512);
+ qemu_iovec_reset(&acb->hd_qiov);
+ qemu_iovec_copy(&acb->hd_qiov, acb->qiov, acb->bytes_done,
+ cur_nr_sectors * 512);
- if (s->crypt_method) {
- if (!acb->cluster_data) {
- acb->cluster_data = qemu_mallocz(QCOW_MAX_CRYPT_CLUSTERS *
- s->cluster_size);
- }
+ if (s->crypt_method) {
+ if (!acb->cluster_data) {
+ acb->cluster_data = qemu_mallocz(QCOW_MAX_CRYPT_CLUSTERS *
+ s->cluster_size);
+ }
- assert(acb->hd_qiov.size <= QCOW_MAX_CRYPT_CLUSTERS * s->cluster_size);
- qemu_iovec_to_buffer(&acb->hd_qiov, acb->cluster_data);
+ assert(acb->hd_qiov.size <=
+ QCOW_MAX_CRYPT_CLUSTERS * s->cluster_size);
+ qemu_iovec_to_buffer(&acb->hd_qiov, acb->cluster_data);
- qcow2_encrypt_sectors(s, acb->sector_num, acb->cluster_data,
- acb->cluster_data, cur_nr_sectors, 1, &s->aes_encrypt_key);
+ qcow2_encrypt_sectors(s, acb->sector_num, acb->cluster_data,
+ acb->cluster_data, cur_nr_sectors, 1, &s->aes_encrypt_key);
- qemu_iovec_reset(&acb->hd_qiov);
- qemu_iovec_add(&acb->hd_qiov, acb->cluster_data,
- cur_nr_sectors * 512);
- }
+ qemu_iovec_reset(&acb->hd_qiov);
+ qemu_iovec_add(&acb->hd_qiov, acb->cluster_data,
+ cur_nr_sectors * 512);
+ }
- BLKDBG_EVENT(bs->file, BLKDBG_WRITE_AIO);
- qemu_co_mutex_unlock(&s->lock);
- ret = bdrv_co_writev(bs->file,
- (cluster_offset >> 9) + index_in_cluster,
- cur_nr_sectors, &acb->hd_qiov);
- qemu_co_mutex_lock(&s->lock);
- if (ret < 0) {
- return ret;
- }
+ BLKDBG_EVENT(bs->file, BLKDBG_WRITE_AIO);
+ qemu_co_mutex_unlock(&s->lock);
+ ret = bdrv_co_writev(bs->file,
+ (cluster_offset >> 9) + index_in_cluster,
+ cur_nr_sectors, &acb->hd_qiov);
+ qemu_co_mutex_lock(&s->lock);
+ if (ret < 0) {
+ return ret;
+ }
- ret = qcow2_alloc_cluster_link_l2(bs, &l2meta);
+ ret = qcow2_alloc_cluster_link_l2(bs, &l2meta);
- run_dependent_requests(s, &l2meta);
+ run_dependent_requests(s, &l2meta);
- if (ret < 0) {
- return ret;
- }
+ if (ret < 0) {
+ return ret;
+ }
- acb->remaining_sectors -= cur_nr_sectors;
- acb->sector_num += cur_nr_sectors;
- acb->bytes_done += cur_nr_sectors * 512;
+ acb->remaining_sectors -= cur_nr_sectors;
+ acb->sector_num += cur_nr_sectors;
+ acb->bytes_done += cur_nr_sectors * 512;
+ }
- return 1;
+ return 0;
}
static int qcow2_co_writev(BlockDriverState *bs,
--
1.7.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [Qemu-devel] [PATCH 7/8] qcow2: removed QCowAIOCB entirely
2011-07-28 7:40 [Qemu-devel] [PATCH 0/8] qcow2 cleanup for coroutine-block branch Frediano Ziglio
` (5 preceding siblings ...)
2011-07-28 7:40 ` [Qemu-devel] [PATCH 6/8] qcow2: reindent and use while before the big jump Frediano Ziglio
@ 2011-07-28 7:40 ` Frediano Ziglio
2011-07-28 7:40 ` [Qemu-devel] [PATCH 8/8] qcow2: remove memory leak Frediano Ziglio
7 siblings, 0 replies; 9+ messages in thread
From: Frediano Ziglio @ 2011-07-28 7:40 UTC (permalink / raw)
To: Kevin Wolf; +Cc: qemu-devel, Frediano Ziglio
Signed-off-by: Frediano Ziglio <freddy77@gmail.com>
---
block/qcow2.c | 207 ++++++++++++++++++++++-----------------------------------
1 files changed, 80 insertions(+), 127 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index dfb969e..6073568 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -372,83 +372,77 @@ int qcow2_backing_read1(BlockDriverState *bs, QEMUIOVector *qiov,
return n1;
}
-typedef struct QCowAIOCB {
- BlockDriverState *bs;
- int64_t sector_num;
- QEMUIOVector *qiov;
- int remaining_sectors;
- uint64_t bytes_done;
- uint8_t *cluster_data;
- QEMUIOVector hd_qiov;
-} QCowAIOCB;
-
-/*
- * Returns 0 when the request is completed successfully, 1 when there is still
- * a part left to do and -errno in error cases.
- */
-static int qcow2_aio_read_cb(QCowAIOCB *acb)
+static int qcow2_co_readv(BlockDriverState *bs, int64_t sector_num,
+ int remaining_sectors, QEMUIOVector *qiov)
{
- BlockDriverState *bs = acb->bs;
BDRVQcowState *s = bs->opaque;
int index_in_cluster, n1;
int ret;
int cur_nr_sectors; /* number of sectors in current iteration */
uint64_t cluster_offset = 0;
+ uint64_t bytes_done = 0;
+ QEMUIOVector hd_qiov;
+ uint8_t *cluster_data = NULL;
- while (acb->remaining_sectors != 0) {
+ qemu_iovec_init(&hd_qiov, qiov->niov);
+
+ qemu_co_mutex_lock(&s->lock);
+
+ while (remaining_sectors != 0) {
/* prepare next request */
- cur_nr_sectors = acb->remaining_sectors;
+ cur_nr_sectors = remaining_sectors;
if (s->crypt_method) {
cur_nr_sectors = MIN(cur_nr_sectors,
QCOW_MAX_CRYPT_CLUSTERS * s->cluster_sectors);
}
- ret = qcow2_get_cluster_offset(bs, acb->sector_num << 9,
+ ret = qcow2_get_cluster_offset(bs, sector_num << 9,
&cur_nr_sectors, &cluster_offset);
if (ret < 0) {
- return ret;
+ goto fail;
}
- index_in_cluster = acb->sector_num & (s->cluster_sectors - 1);
+ index_in_cluster = sector_num & (s->cluster_sectors - 1);
- qemu_iovec_reset(&acb->hd_qiov);
- qemu_iovec_copy(&acb->hd_qiov, acb->qiov, acb->bytes_done,
+ qemu_iovec_reset(&hd_qiov);
+ qemu_iovec_copy(&hd_qiov, qiov, bytes_done,
cur_nr_sectors * 512);
if (!cluster_offset) {
if (bs->backing_hd) {
/* read from the base image */
- n1 = qcow2_backing_read1(bs->backing_hd, &acb->hd_qiov,
- acb->sector_num, cur_nr_sectors);
+ n1 = qcow2_backing_read1(bs->backing_hd, &hd_qiov,
+ sector_num, cur_nr_sectors);
if (n1 > 0) {
BLKDBG_EVENT(bs->file, BLKDBG_READ_BACKING_AIO);
qemu_co_mutex_unlock(&s->lock);
- ret = bdrv_co_readv(bs->backing_hd, acb->sector_num,
- n1, &acb->hd_qiov);
+ ret = bdrv_co_readv(bs->backing_hd, sector_num,
+ n1, &hd_qiov);
qemu_co_mutex_lock(&s->lock);
if (ret < 0) {
- return ret;
+ goto fail;
}
}
} else {
/* Note: in this case, no need to wait */
- qemu_iovec_memset(&acb->hd_qiov, 0, 512 * cur_nr_sectors);
+ qemu_iovec_memset(&hd_qiov, 0, 512 * cur_nr_sectors);
}
} else if (cluster_offset & QCOW_OFLAG_COMPRESSED) {
/* add AIO support for compressed blocks ? */
ret = qcow2_decompress_cluster(bs, cluster_offset);
if (ret < 0) {
- return ret;
+ goto fail;
}
- qemu_iovec_from_buffer(&acb->hd_qiov,
+ qemu_iovec_from_buffer(&hd_qiov,
s->cluster_cache + index_in_cluster * 512,
512 * cur_nr_sectors);
} else {
if ((cluster_offset & 511) != 0) {
- return -EIO;
+ ret = -EIO;
+ goto fail;
}
if (s->crypt_method) {
@@ -456,15 +450,15 @@ static int qcow2_aio_read_cb(QCowAIOCB *acb)
* For encrypted images, read everything into a temporary
* contiguous buffer on which the AES functions can work.
*/
- if (!acb->cluster_data) {
- acb->cluster_data =
+ if (!cluster_data) {
+ cluster_data =
qemu_mallocz(QCOW_MAX_CRYPT_CLUSTERS * s->cluster_size);
}
assert(cur_nr_sectors <=
QCOW_MAX_CRYPT_CLUSTERS * s->cluster_sectors);
- qemu_iovec_reset(&acb->hd_qiov);
- qemu_iovec_add(&acb->hd_qiov, acb->cluster_data,
+ qemu_iovec_reset(&hd_qiov);
+ qemu_iovec_add(&hd_qiov, cluster_data,
512 * cur_nr_sectors);
}
@@ -472,63 +466,32 @@ static int qcow2_aio_read_cb(QCowAIOCB *acb)
qemu_co_mutex_unlock(&s->lock);
ret = bdrv_co_readv(bs->file,
(cluster_offset >> 9) + index_in_cluster,
- cur_nr_sectors, &acb->hd_qiov);
+ cur_nr_sectors, &hd_qiov);
qemu_co_mutex_lock(&s->lock);
if (ret < 0) {
- return ret;
+ goto fail;
}
if (s->crypt_method) {
- qcow2_encrypt_sectors(s, acb->sector_num, acb->cluster_data,
- acb->cluster_data, cur_nr_sectors, 0, &s->aes_decrypt_key);
- qemu_iovec_reset(&acb->hd_qiov);
- qemu_iovec_copy(&acb->hd_qiov, acb->qiov, acb->bytes_done,
+ qcow2_encrypt_sectors(s, sector_num, cluster_data,
+ cluster_data, cur_nr_sectors, 0, &s->aes_decrypt_key);
+ qemu_iovec_reset(&hd_qiov);
+ qemu_iovec_copy(&hd_qiov, qiov, bytes_done,
cur_nr_sectors * 512);
- qemu_iovec_from_buffer(&acb->hd_qiov, acb->cluster_data,
+ qemu_iovec_from_buffer(&hd_qiov, cluster_data,
512 * cur_nr_sectors);
}
}
- acb->remaining_sectors -= cur_nr_sectors;
- acb->sector_num += cur_nr_sectors;
- acb->bytes_done += cur_nr_sectors * 512;
+ remaining_sectors -= cur_nr_sectors;
+ sector_num += cur_nr_sectors;
+ bytes_done += cur_nr_sectors * 512;
}
+ ret = 0;
- return 0;
-}
-
-static QCowAIOCB *qcow2_aio_setup(BlockDriverState *bs, int64_t sector_num,
- QEMUIOVector *qiov, int nb_sectors,
- BlockDriverCompletionFunc *cb,
- void *opaque, QCowAIOCB *acb)
-{
- memset(acb, 0, sizeof(*acb));
- acb->bs = bs;
- acb->sector_num = sector_num;
- acb->qiov = qiov;
-
- qemu_iovec_init(&acb->hd_qiov, qiov->niov);
-
- acb->bytes_done = 0;
- acb->remaining_sectors = nb_sectors;
- return acb;
-}
-
-static int qcow2_co_readv(BlockDriverState *bs, int64_t sector_num,
- int nb_sectors, QEMUIOVector *qiov)
-{
- BDRVQcowState *s = bs->opaque;
- QCowAIOCB acb;
- int ret;
-
- qcow2_aio_setup(bs, sector_num, qiov, nb_sectors, NULL, NULL, &acb);
-
- qemu_co_mutex_lock(&s->lock);
- do {
- ret = qcow2_aio_read_cb(&acb);
- } while (ret > 0);
+fail:
qemu_co_mutex_unlock(&s->lock);
- qemu_iovec_destroy(&acb.hd_qiov);
+ qemu_iovec_destroy(&hd_qiov);
return ret;
}
@@ -548,13 +511,11 @@ static void run_dependent_requests(BDRVQcowState *s, QCowL2Meta *m)
}
}
-/*
- * Returns 0 when the request is completed successfully, 1 when there is still
- * a part left to do and -errno in error cases.
- */
-static int qcow2_aio_write_cb(QCowAIOCB *acb)
+static int qcow2_co_writev(BlockDriverState *bs,
+ int64_t sector_num,
+ int remaining_sectors,
+ QEMUIOVector *qiov)
{
- BlockDriverState *bs = acb->bs;
BDRVQcowState *s = bs->opaque;
int index_in_cluster;
int n_end;
@@ -562,47 +523,56 @@ static int qcow2_aio_write_cb(QCowAIOCB *acb)
int cur_nr_sectors; /* number of sectors in current iteration */
QCowL2Meta l2meta;
uint64_t cluster_offset;
+ QEMUIOVector hd_qiov;
+ uint64_t bytes_done = 0;
+ uint8_t *cluster_data = NULL;
l2meta.nb_clusters = 0;
qemu_co_queue_init(&l2meta.dependent_requests);
- while (acb->remaining_sectors != 0) {
+ qemu_iovec_init(&hd_qiov, qiov->niov);
+
+ s->cluster_cache_offset = -1; /* disable compressed cache */
+
+ qemu_co_mutex_lock(&s->lock);
- index_in_cluster = acb->sector_num & (s->cluster_sectors - 1);
- n_end = index_in_cluster + acb->remaining_sectors;
+ while (remaining_sectors != 0) {
+
+ index_in_cluster = sector_num & (s->cluster_sectors - 1);
+ n_end = index_in_cluster + remaining_sectors;
if (s->crypt_method &&
n_end > QCOW_MAX_CRYPT_CLUSTERS * s->cluster_sectors) {
n_end = QCOW_MAX_CRYPT_CLUSTERS * s->cluster_sectors;
}
- ret = qcow2_alloc_cluster_offset(bs, acb->sector_num << 9,
+ ret = qcow2_alloc_cluster_offset(bs, sector_num << 9,
index_in_cluster, n_end, &cur_nr_sectors, &l2meta);
if (ret < 0) {
- return ret;
+ goto fail;
}
cluster_offset = l2meta.cluster_offset;
assert((cluster_offset & 511) == 0);
- qemu_iovec_reset(&acb->hd_qiov);
- qemu_iovec_copy(&acb->hd_qiov, acb->qiov, acb->bytes_done,
+ qemu_iovec_reset(&hd_qiov);
+ qemu_iovec_copy(&hd_qiov, qiov, bytes_done,
cur_nr_sectors * 512);
if (s->crypt_method) {
- if (!acb->cluster_data) {
- acb->cluster_data = qemu_mallocz(QCOW_MAX_CRYPT_CLUSTERS *
+ if (!cluster_data) {
+ cluster_data = qemu_mallocz(QCOW_MAX_CRYPT_CLUSTERS *
s->cluster_size);
}
- assert(acb->hd_qiov.size <=
+ assert(hd_qiov.size <=
QCOW_MAX_CRYPT_CLUSTERS * s->cluster_size);
- qemu_iovec_to_buffer(&acb->hd_qiov, acb->cluster_data);
+ qemu_iovec_to_buffer(&hd_qiov, cluster_data);
- qcow2_encrypt_sectors(s, acb->sector_num, acb->cluster_data,
- acb->cluster_data, cur_nr_sectors, 1, &s->aes_encrypt_key);
+ qcow2_encrypt_sectors(s, sector_num, cluster_data,
+ cluster_data, cur_nr_sectors, 1, &s->aes_encrypt_key);
- qemu_iovec_reset(&acb->hd_qiov);
- qemu_iovec_add(&acb->hd_qiov, acb->cluster_data,
+ qemu_iovec_reset(&hd_qiov);
+ qemu_iovec_add(&hd_qiov, cluster_data,
cur_nr_sectors * 512);
}
@@ -610,10 +580,10 @@ static int qcow2_aio_write_cb(QCowAIOCB *acb)
qemu_co_mutex_unlock(&s->lock);
ret = bdrv_co_writev(bs->file,
(cluster_offset >> 9) + index_in_cluster,
- cur_nr_sectors, &acb->hd_qiov);
+ cur_nr_sectors, &hd_qiov);
qemu_co_mutex_lock(&s->lock);
if (ret < 0) {
- return ret;
+ goto fail;
}
ret = qcow2_alloc_cluster_link_l2(bs, &l2meta);
@@ -621,36 +591,19 @@ static int qcow2_aio_write_cb(QCowAIOCB *acb)
run_dependent_requests(s, &l2meta);
if (ret < 0) {
- return ret;
+ goto fail;
}
- acb->remaining_sectors -= cur_nr_sectors;
- acb->sector_num += cur_nr_sectors;
- acb->bytes_done += cur_nr_sectors * 512;
+ remaining_sectors -= cur_nr_sectors;
+ sector_num += cur_nr_sectors;
+ bytes_done += cur_nr_sectors * 512;
}
+ ret = 0;
- return 0;
-}
-
-static int qcow2_co_writev(BlockDriverState *bs,
- int64_t sector_num,
- int nb_sectors,
- QEMUIOVector *qiov)
-{
- BDRVQcowState *s = bs->opaque;
- QCowAIOCB acb;
- int ret;
-
- qcow2_aio_setup(bs, sector_num, qiov, nb_sectors, NULL, NULL, &acb);
- s->cluster_cache_offset = -1; /* disable compressed cache */
-
- qemu_co_mutex_lock(&s->lock);
- do {
- ret = qcow2_aio_write_cb(&acb);
- } while (ret > 0);
+fail:
qemu_co_mutex_unlock(&s->lock);
- qemu_iovec_destroy(&acb.hd_qiov);
+ qemu_iovec_destroy(&hd_qiov);
return ret;
}
--
1.7.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
* [Qemu-devel] [PATCH 8/8] qcow2: remove memory leak
2011-07-28 7:40 [Qemu-devel] [PATCH 0/8] qcow2 cleanup for coroutine-block branch Frediano Ziglio
` (6 preceding siblings ...)
2011-07-28 7:40 ` [Qemu-devel] [PATCH 7/8] qcow2: removed QCowAIOCB entirely Frediano Ziglio
@ 2011-07-28 7:40 ` Frediano Ziglio
7 siblings, 0 replies; 9+ messages in thread
From: Frediano Ziglio @ 2011-07-28 7:40 UTC (permalink / raw)
To: Kevin Wolf; +Cc: qemu-devel, Frediano Ziglio
Signed-off-by: Frediano Ziglio <freddy77@gmail.com>
---
block/qcow2.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index 6073568..aed8da7 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -492,6 +492,7 @@ fail:
qemu_co_mutex_unlock(&s->lock);
qemu_iovec_destroy(&hd_qiov);
+ qemu_free(cluster_data);
return ret;
}
@@ -604,6 +605,7 @@ fail:
qemu_co_mutex_unlock(&s->lock);
qemu_iovec_destroy(&hd_qiov);
+ qemu_free(cluster_data);
return ret;
}
--
1.7.1
^ permalink raw reply related [flat|nested] 9+ messages in thread
end of thread, other threads:[~2011-07-28 7:41 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2011-07-28 7:40 [Qemu-devel] [PATCH 0/8] qcow2 cleanup for coroutine-block branch Frediano Ziglio
2011-07-28 7:40 ` [Qemu-devel] [PATCH 1/8] qcow2: removed unused fields Frediano Ziglio
2011-07-28 7:40 ` [Qemu-devel] [PATCH 2/8] qcow2: removed cur_nr_sectors field in QCowAIOCB Frediano Ziglio
2011-07-28 7:40 ` [Qemu-devel] [PATCH 3/8] qcow2: remove l2meta from QCowAIOCB Frediano Ziglio
2011-07-28 7:40 ` [Qemu-devel] [PATCH 4/8] qcow2: remove cluster_offset " Frediano Ziglio
2011-07-28 7:40 ` [Qemu-devel] [PATCH 5/8] qcow2: remove common " Frediano Ziglio
2011-07-28 7:40 ` [Qemu-devel] [PATCH 6/8] qcow2: reindent and use while before the big jump Frediano Ziglio
2011-07-28 7:40 ` [Qemu-devel] [PATCH 7/8] qcow2: removed QCowAIOCB entirely Frediano Ziglio
2011-07-28 7:40 ` [Qemu-devel] [PATCH 8/8] qcow2: remove memory leak Frediano Ziglio
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