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ddt: move entry compression into ddt_zap

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I think I can say with some confidence that anyone making a new storage
type in 2023 is doing their own thing with compression, not this.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Sponsored-by: Klara, Inc.
Sponsored-by: iXsystems, Inc.
Closes #15887
This commit is contained in:
Rob Norris
2023-06-30 12:48:45 +10:00
committed by Brian Behlendorf
parent d3bafe4554
commit 86e91c030c
3 changed files with 50 additions and 53 deletions
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module/zfs/ddt.c
-42
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@@ -35,7 +35,6 @@
#include <sys/arc.h>
#include <sys/dsl_pool.h>
#include <sys/zio_checksum.h>
#include <sys/zio_compress.h>
#include <sys/dsl_scan.h>
#include <sys/abd.h>
@@ -554,47 +553,6 @@ ddt_get_pool_dedup_ratio(spa_t *spa)
return (dds_total.dds_ref_dsize * 100 / dds_total.dds_dsize);
}
size_t
ddt_compress(void *src, uchar_t *dst, size_t s_len, size_t d_len)
{
uchar_t *version = dst++;
int cpfunc = ZIO_COMPRESS_ZLE;
zio_compress_info_t *ci = &zio_compress_table[cpfunc];
size_t c_len;
ASSERT3U(d_len, >=, s_len + 1); /* no compression plus version byte */
c_len = ci->ci_compress(src, dst, s_len, d_len - 1, ci->ci_level);
if (c_len == s_len) {
cpfunc = ZIO_COMPRESS_OFF;
memcpy(dst, src, s_len);
}
*version = cpfunc;
if (ZFS_HOST_BYTEORDER)
*version |= DDT_COMPRESS_BYTEORDER_MASK;
return (c_len + 1);
}
void
ddt_decompress(uchar_t *src, void *dst, size_t s_len, size_t d_len)
{
uchar_t version = *src++;
int cpfunc = version & DDT_COMPRESS_FUNCTION_MASK;
zio_compress_info_t *ci = &zio_compress_table[cpfunc];
if (ci->ci_decompress != NULL)
(void) ci->ci_decompress(src, dst, s_len, d_len, ci->ci_level);
else
memcpy(dst, src, d_len);
if (((version & DDT_COMPRESS_BYTEORDER_MASK) != 0) !=
(ZFS_HOST_BYTEORDER != 0))
byteswap_uint64_array(dst, d_len);
}
ddt_t *
ddt_select(spa_t *spa, const blkptr_t *bp)
{