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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH v2 6/7] block: Clean up local variable shadowing
Local variables shadowing other local variables or parameters make the
code needlessly hard to understand. Tracked down with -Wshadow=local.
Clean up: delete inner declarations when they are actually redundant,
else rename variables.
Signed-off-by: Markus Armbruster <armbru@xxxxxxxxxx>
Reviewed-by: Stefan Hajnoczi <stefanha@xxxxxxxxxx>
Acked-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
Acked-by: Ilya Dryomov <idryomov@xxxxxxxxx>
---
block.c | 9 +++++----
block/rbd.c | 2 +-
block/stream.c | 1 -
block/vvfat.c | 35 ++++++++++++++++++-----------------
hw/block/xen-block.c | 6 +++---
5 files changed, 27 insertions(+), 26 deletions(-)
diff --git a/block.c b/block.c
index 8da89aaa62..bb5dd17e9c 100644
--- a/block.c
+++ b/block.c
@@ -3035,18 +3035,19 @@ static BdrvChild
*bdrv_attach_child_common(BlockDriverState *child_bs,
&local_err);
if (ret < 0 && child_class->change_aio_ctx) {
- Transaction *tran = tran_new();
+ Transaction *aio_ctx_tran = tran_new();
GHashTable *visited = g_hash_table_new(NULL, NULL);
bool ret_child;
g_hash_table_add(visited, new_child);
ret_child = child_class->change_aio_ctx(new_child, child_ctx,
- visited, tran, NULL);
+ visited, aio_ctx_tran,
+ NULL);
if (ret_child == true) {
error_free(local_err);
ret = 0;
}
- tran_finalize(tran, ret_child == true ? 0 : -1);
+ tran_finalize(aio_ctx_tran, ret_child == true ? 0 : -1);
g_hash_table_destroy(visited);
}
@@ -6077,12 +6078,12 @@ void bdrv_iterate_format(void (*it)(void *opaque, const
char *name),
QLIST_FOREACH(drv, &bdrv_drivers, list) {
if (drv->format_name) {
bool found = false;
- int i = count;
if (use_bdrv_whitelist && !bdrv_is_whitelisted(drv, read_only)) {
continue;
}
+ i = count;
while (formats && i && !found) {
found = !strcmp(formats[--i], drv->format_name);
}
diff --git a/block/rbd.c b/block/rbd.c
index 978671411e..472ca05cba 100644
--- a/block/rbd.c
+++ b/block/rbd.c
@@ -1290,7 +1290,7 @@ static int coroutine_fn
qemu_rbd_start_co(BlockDriverState *bs,
* operations that exceed the current size.
*/
if (offset + bytes > s->image_size) {
- int r = qemu_rbd_resize(bs, offset + bytes);
+ r = qemu_rbd_resize(bs, offset + bytes);
if (r < 0) {
return r;
}
diff --git a/block/stream.c b/block/stream.c
index e522bbdec5..007253880b 100644
--- a/block/stream.c
+++ b/block/stream.c
@@ -282,7 +282,6 @@ void stream_start(const char *job_id, BlockDriverState *bs,
/* Make sure that the image is opened in read-write mode */
bs_read_only = bdrv_is_read_only(bs);
if (bs_read_only) {
- int ret;
/* Hold the chain during reopen */
if (bdrv_freeze_backing_chain(bs, above_base, errp) < 0) {
return;
diff --git a/block/vvfat.c b/block/vvfat.c
index 0ddc91fc09..856b479c91 100644
--- a/block/vvfat.c
+++ b/block/vvfat.c
@@ -777,7 +777,6 @@ static int read_directory(BDRVVVFATState* s, int
mapping_index)
while((entry=readdir(dir))) {
unsigned int length=strlen(dirname)+2+strlen(entry->d_name);
char* buffer;
- direntry_t* direntry;
struct stat st;
int is_dot=!strcmp(entry->d_name,".");
int is_dotdot=!strcmp(entry->d_name,"..");
@@ -857,7 +856,7 @@ static int read_directory(BDRVVVFATState* s, int
mapping_index)
/* fill with zeroes up to the end of the cluster */
while(s->directory.next%(0x10*s->sectors_per_cluster)) {
- direntry_t* direntry=array_get_next(&(s->directory));
+ direntry = array_get_next(&(s->directory));
memset(direntry,0,sizeof(direntry_t));
}
@@ -1962,24 +1961,24 @@ get_cluster_count_for_direntry(BDRVVVFATState* s,
direntry_t* direntry, const ch
* This is horribly inefficient, but that is okay, since
* it is rarely executed, if at all.
*/
- int64_t offset = cluster2sector(s, cluster_num);
+ int64_t offs = cluster2sector(s, cluster_num);
vvfat_close_current_file(s);
for (i = 0; i < s->sectors_per_cluster; i++) {
int res;
res = bdrv_is_allocated(s->qcow->bs,
- (offset + i) * BDRV_SECTOR_SIZE,
+ (offs + i) * BDRV_SECTOR_SIZE,
BDRV_SECTOR_SIZE, NULL);
if (res < 0) {
return -1;
}
if (!res) {
- res = vvfat_read(s->bs, offset, s->cluster_buffer, 1);
+ res = vvfat_read(s->bs, offs, s->cluster_buffer, 1);
if (res) {
return -1;
}
- res = bdrv_co_pwrite(s->qcow, offset *
BDRV_SECTOR_SIZE,
+ res = bdrv_co_pwrite(s->qcow, offs * BDRV_SECTOR_SIZE,
BDRV_SECTOR_SIZE,
s->cluster_buffer,
0);
if (res < 0) {
@@ -2467,8 +2466,9 @@ commit_direntries(BDRVVVFATState* s, int dir_index, int
parent_mapping_index)
for (c = first_cluster; !fat_eof(s, c); c = modified_fat_get(s, c)) {
direntry_t *first_direntry;
- void* direntry = array_get(&(s->directory), current_dir_index);
- int ret = vvfat_read(s->bs, cluster2sector(s, c), direntry,
+
+ direntry = array_get(&(s->directory), current_dir_index);
+ ret = vvfat_read(s->bs, cluster2sector(s, c), (uint8_t *)direntry,
s->sectors_per_cluster);
if (ret)
return ret;
@@ -2690,12 +2690,12 @@ static int handle_renames_and_mkdirs(BDRVVVFATState* s)
direntry_t* direntry = array_get(&(s->directory),
mapping->info.dir.first_dir_index);
uint32_t c = mapping->begin;
- int i = 0;
+ int j = 0;
/* recurse */
while (!fat_eof(s, c)) {
do {
- direntry_t* d = direntry + i;
+ direntry_t *d = direntry + j;
if (is_file(d) || (is_directory(d) && !is_dot(d))) {
int l;
@@ -2716,8 +2716,8 @@ static int handle_renames_and_mkdirs(BDRVVVFATState* s)
schedule_rename(s, m->begin, new_path);
}
- i++;
- } while((i % (0x10 * s->sectors_per_cluster)) != 0);
+ j++;
+ } while (j % (0x10 * s->sectors_per_cluster) != 0);
c = fat_get(s, c);
}
}
@@ -2804,16 +2804,16 @@ static int coroutine_fn GRAPH_RDLOCK
handle_commits(BDRVVVFATState* s)
int begin = commit->param.new_file.first_cluster;
mapping_t* mapping = find_mapping_for_cluster(s, begin);
direntry_t* entry;
- int i;
+ int j;
/* find direntry */
- for (i = 0; i < s->directory.next; i++) {
- entry = array_get(&(s->directory), i);
+ for (j = 0; j < s->directory.next; j++) {
+ entry = array_get(&(s->directory), j);
if (is_file(entry) && begin_of_direntry(entry) == begin)
break;
}
- if (i >= s->directory.next) {
+ if (j >= s->directory.next) {
fail = -6;
continue;
}
@@ -2833,8 +2833,9 @@ static int coroutine_fn GRAPH_RDLOCK
handle_commits(BDRVVVFATState* s)
mapping->mode = MODE_NORMAL;
mapping->info.file.offset = 0;
- if (commit_one_file(s, i, 0))
+ if (commit_one_file(s, j, 0)) {
fail = -7;
+ }
break;
}
diff --git a/hw/block/xen-block.c b/hw/block/xen-block.c
index 3906b9058b..a07cd7eb5d 100644
--- a/hw/block/xen-block.c
+++ b/hw/block/xen-block.c
@@ -369,7 +369,7 @@ static void xen_block_get_vdev(Object *obj, Visitor *v,
const char *name,
case XEN_BLOCK_VDEV_TYPE_XVD:
case XEN_BLOCK_VDEV_TYPE_HD:
case XEN_BLOCK_VDEV_TYPE_SD: {
- char *name = disk_to_vbd_name(vdev->disk);
+ char *vbd_name = disk_to_vbd_name(vdev->disk);
str = g_strdup_printf("%s%s%lu",
(vdev->type == XEN_BLOCK_VDEV_TYPE_XVD) ?
@@ -377,8 +377,8 @@ static void xen_block_get_vdev(Object *obj, Visitor *v,
const char *name,
(vdev->type == XEN_BLOCK_VDEV_TYPE_HD) ?
"hd" :
"sd",
- name, vdev->partition);
- g_free(name);
+ vbd_name, vdev->partition);
+ g_free(vbd_name);
break;
}
default:
--
2.41.0
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