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OpenCloudOS-Kernel
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dm: use vzalloc 

Use vzalloc() instead of vmalloc()+memset().

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Joe Perches 2011-08-02 12:32:02 +01:00 committed by Alasdair G Kergon
parent 6c9b27ab08
commit e29e65aacb
3 changed files with 3 additions and 7 deletions
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3
drivers/md/dm-log.c
View File

@ -492,7 +492,7 @@ static int create_log_context(struct dm_dirty_log *log, struct dm_target *ti,
memset(lc->sync_bits, (sync == NOSYNC) ? -1 : 0, bitset_size);
lc->sync_count = (sync == NOSYNC) ? region_count : 0;
lc->recovering_bits = vmalloc(bitset_size);
lc->recovering_bits = vzalloc(bitset_size);
if (!lc->recovering_bits) {
DMWARN("couldn't allocate sync bitset");
vfree(lc->sync_bits);
@ -504,7 +504,6 @@ static int create_log_context(struct dm_dirty_log *log, struct dm_target *ti,
kfree(lc);
return -ENOMEM;
}
memset(lc->recovering_bits, 0, bitset_size);
lc->sync_search = 0;
log->context = lc;

3
drivers/md/dm-snap-persistent.c
View File

@ -174,10 +174,9 @@ static int alloc_area(struct pstore *ps)
if (!ps->area)
goto err_area;
ps->zero_area = vmalloc(len);
ps->zero_area = vzalloc(len);
if (!ps->zero_area)
goto err_zero_area;
memset(ps->zero_area, 0, len);
ps->header_area = vmalloc(len);
if (!ps->header_area)

4
drivers/md/dm-table.c
View File

@ -153,9 +153,7 @@ void *dm_vcalloc(unsigned long nmemb, unsigned long elem_size)
return NULL;
size = nmemb * elem_size;
addr = vmalloc(size);
if (addr)
memset(addr, 0, size);
addr = vzalloc(size);
return addr;
}