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Code Releases Activity

o Cut down number of vmallocs to increase speed and efficiency

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This commit is contained in:
Steven Whitehouse 2001-09-19 10:59:10 +00:00
parent 44206f5e75
commit e33e89637c
1 changed files with 4 additions and 6 deletions
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10
driver/device-mapper/dm-table.c
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@ -96,14 +96,13 @@ static int alloc_targets(struct dm_table *t, int num)
offset_t *n_highs; offset_t *n_highs;
struct target *n_targets; struct target *n_targets;
int n = t->num_targets; int n = t->num_targets;
int size = (sizeof(struct target) + sizeof(offset_t)) * num;
if (!(n_highs = vmalloc(sizeof(*n_highs) * num))) n_highs = vmalloc(size);
if (n_highs == NULL)
return -ENOMEM; return -ENOMEM;
if (!(n_targets = vmalloc(sizeof(*n_targets) * num))) { n_targets = (struct target *)(n_highs + num);
vfree(n_highs);
return -ENOMEM;
}
if (n) { if (n) {
memcpy(n_highs, t->highs, sizeof(*n_highs) * n); memcpy(n_highs, t->highs, sizeof(*n_highs) * n);
@ -111,7 +110,6 @@ static int alloc_targets(struct dm_table *t, int num)
} }
vfree(t->highs); vfree(t->highs);
vfree(t->targets);
t->num_allocated = num; t->num_allocated = num;
t->highs = n_highs; t->highs = n_highs;