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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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include/sys/zap_impl.h
+2 -1
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@@ -191,7 +191,8 @@ typedef struct zap_name {
uint64_t zn_hash;
matchtype_t zn_matchtype;
int zn_normflags;
char zn_normbuf[ZAP_MAXNAMELEN];
int zn_normbuf_len;
char zn_normbuf[];
} zap_name_t;
#define zap_f zap_u.zap_fat