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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/spa_log_spacemap.c
+5 -4
View File
@@ -1020,16 +1020,17 @@ spa_ld_log_sm_metadata(spa_t *spa)
}
zap_cursor_t zc;
zap_attribute_t za;
zap_attribute_t *za = zap_attribute_alloc();
for (zap_cursor_init(&zc, spa_meta_objset(spa), spacemap_zap);
(error = zap_cursor_retrieve(&zc, &za)) == 0;
(error = zap_cursor_retrieve(&zc, za)) == 0;
zap_cursor_advance(&zc)) {
uint64_t log_txg = zfs_strtonum(za.za_name, NULL);
uint64_t log_txg = zfs_strtonum(za->za_name, NULL);
spa_log_sm_t *sls =
spa_log_sm_alloc(za.za_first_integer, log_txg);
spa_log_sm_alloc(za->za_first_integer, log_txg);
avl_add(&spa->spa_sm_logs_by_txg, sls);
}
zap_cursor_fini(&zc);
zap_attribute_free(za);
if (error != ENOENT) {
spa_load_failed(spa, "spa_ld_log_sm_metadata(): failed at "
"zap_cursor_retrieve(spacemap_zap) [error %d]",