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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/dsl_crypt.c
+2 -2
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@@ -1497,7 +1497,7 @@ spa_keystore_change_key_sync_impl(uint64_t rddobj, uint64_t ddobj,
}
zc = kmem_alloc(sizeof (zap_cursor_t), KM_SLEEP);
za = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP);
za = zap_attribute_alloc();
/* Recurse into all child dsl dirs. */
for (zap_cursor_init(zc, dp->dp_meta_objset,
@@ -1529,7 +1529,7 @@ spa_keystore_change_key_sync_impl(uint64_t rddobj, uint64_t ddobj,
}
zap_cursor_fini(zc);
kmem_free(za, sizeof (zap_attribute_t));
zap_attribute_free(za);
kmem_free(zc, sizeof (zap_cursor_t));
dsl_dir_rele(dd, FTAG);