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Fix memory allocation issue for BLAKE3 context

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The kmem_alloc(sizeof (*ctx), KM_NOSLEEP) call on FreeBSD can't be
used in this code segment. Work around this by pre-allocating a percpu
context array for later use.

Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tino Reichardt <milky-zfs@mcmilk.de>
Closes #13568
This commit is contained in:
Tino Reichardt
2022-06-21 23:32:09 +02:00
committed by GitHub
parent b17663f571
commit deb1213098
4 changed files with 48 additions and 4 deletions
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include/sys/blake3.h
+5
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@@ -92,6 +92,11 @@ void Blake3_Final(const BLAKE3_CTX *ctx, uint8_t *out);
void Blake3_FinalSeek(const BLAKE3_CTX *ctx, uint64_t seek, uint8_t *out,
size_t out_len);
/* these are pre-allocated contexts */
extern void **blake3_per_cpu_ctx;
extern void blake3_per_cpu_ctx_init(void);
extern void blake3_per_cpu_ctx_fini(void);
/* return number of supported implementations */
extern int blake3_get_impl_count(void);