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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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module/zfs/dmu_redact.c
+5 -3
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@@ -189,7 +189,7 @@ zfs_get_deleteq(objset_t *os)
objlist_t *deleteq_objlist = objlist_create();
uint64_t deleteq_obj;
zap_cursor_t zc;
zap_attribute_t za;
zap_attribute_t *za;
dmu_object_info_t doi;
ASSERT3U(os->os_phys->os_type, ==, DMU_OST_ZFS);
@@ -208,13 +208,15 @@ zfs_get_deleteq(objset_t *os)
avl_create(&at, objnode_compare, sizeof (struct objnode),
offsetof(struct objnode, node));
za = zap_attribute_alloc();
for (zap_cursor_init(&zc, os, deleteq_obj);
zap_cursor_retrieve(&zc, &za) == 0; zap_cursor_advance(&zc)) {
zap_cursor_retrieve(&zc, za) == 0; zap_cursor_advance(&zc)) {
struct objnode *obj = kmem_zalloc(sizeof (*obj), KM_SLEEP);
obj->obj = za.za_first_integer;
obj->obj = za->za_first_integer;
avl_add(&at, obj);
}
zap_cursor_fini(&zc);
zap_attribute_free(za);
struct objnode *next, *found = avl_first(&at);
while (found != NULL) {