c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-25 03:37:45 +03:00
Code Issues Packages Projects Releases Wiki Activity

abd: lift ABD zero scan from zio_compress_data() to abd_cmp_zero()

Browse Source 
It's now the caller's responsibility do special handling for holes if
that's something it wants.

This also makes zio_compress_data() and zio_decompress_data() properly
the inverse of each other.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
Reviewed-by: Jason Lee <jasonlee@lanl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16326
This commit is contained in:
Rob Norris
2024-08-10 07:30:26 +10:00
committed by GitHub
parent f87fe67b44
commit b0bf14cdb5
4 changed files with 47 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files
module/zfs/zio.c
+12 -5
View File
@@ -1859,8 +1859,13 @@ zio_write_compress(zio_t *zio)
if (compress != ZIO_COMPRESS_OFF &&
!(zio->io_flags & ZIO_FLAG_RAW_COMPRESS)) {
void *cbuf = NULL;
psize = zio_compress_data(compress, zio->io_abd, &cbuf, lsize,
zp->zp_complevel);
if (abd_cmp_zero(zio->io_abd, lsize) == 0)
psize = 0;
else if (compress == ZIO_COMPRESS_EMPTY)
psize = lsize;
else
psize = zio_compress_data(compress, zio->io_abd, &cbuf,
lsize, zp->zp_complevel);
if (psize == 0) {
compress = ZIO_COMPRESS_OFF;
} else if (psize >= lsize) {
@@ -1924,10 +1929,12 @@ zio_write_compress(zio_t *zio)
* receive, we must check whether the block can be compressed
* to a hole.
*/
psize = zio_compress_data(ZIO_COMPRESS_EMPTY,
zio->io_abd, NULL, lsize, zp->zp_complevel);
if (psize == 0 || psize >= lsize)
if (abd_cmp_zero(zio->io_abd, lsize) == 0) {
psize = 0;
compress = ZIO_COMPRESS_OFF;
} else {
psize = lsize;
}
} else if (zio->io_flags & ZIO_FLAG_RAW_COMPRESS &&
!(zio->io_flags & ZIO_FLAG_RAW_ENCRYPT)) {
/*