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Allocate zap_attribute_t from kmem instead of stack

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This patch is preparatory work for long name feature. It changes all
users of zap_attribute_t to allocate it from kmem instead of stack. It
also make zap_attribute_t and zap_name_t structure variable length.

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Chunwei Chen <david.chen@nutanix.com>
Closes #15921
This commit is contained in:
Sanjeev Bagewadi
2021-02-02 13:54:15 +00:00
committed by Brian Behlendorf
parent 141368a4b6
commit 3cf2bfa570
35 changed files with 513 additions and 365 deletions
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cmd/zhack.c
+9 -8
View File
@@ -203,26 +203,27 @@ static void
dump_obj(objset_t *os, uint64_t obj, const char *name)
{
zap_cursor_t zc;
zap_attribute_t za;
zap_attribute_t *za = zap_attribute_alloc();
(void) printf("%s_obj:\n", name);
for (zap_cursor_init(&zc, os, obj);
zap_cursor_retrieve(&zc, &za) == 0;
zap_cursor_retrieve(&zc, za) == 0;
zap_cursor_advance(&zc)) {
if (za.za_integer_length == 8) {
ASSERT(za.za_num_integers == 1);
if (za->za_integer_length == 8) {
ASSERT(za->za_num_integers == 1);
(void) printf("\t%s = %llu\n",
za.za_name, (u_longlong_t)za.za_first_integer);
za->za_name, (u_longlong_t)za->za_first_integer);
} else {
ASSERT(za.za_integer_length == 1);
ASSERT(za->za_integer_length == 1);
char val[1024];
VERIFY(zap_lookup(os, obj, za.za_name,
VERIFY(zap_lookup(os, obj, za->za_name,
1, sizeof (val), val) == 0);
(void) printf("\t%s = %s\n", za.za_name, val);
(void) printf("\t%s = %s\n", za->za_name, val);
}
}
zap_cursor_fini(&zc);
zap_attribute_free(za);
}
static void