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zio: rename io_reexecute as io_post; use it for the direct IO checksum error flag

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We're not supposed to modify someone else's io_flags, so we need another
way to propagate DIO_CHKSUM_ERR.

If we squint, we can see that io_reexecute is really just recording
exceptional events that a parent (or its parents) will need to do
something about. It just happens that the only things we've had
historically are two forms of reexecution: now or later (suspend).

So, rename it to io_post, as in, post-IO info/events/actions. And now we
have a few spare bits for other conditions.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #17507
This commit is contained in:
Rob Norris
2025-07-05 13:16:14 +10:00
committed by GitHub
parent ee0cb4cb89
commit 92d3b4ee2c
8 changed files with 50 additions and 52 deletions
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module/zfs/vdev_mirror.c
+1 -1
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@@ -779,7 +779,7 @@ vdev_mirror_io_done(zio_t *zio)
* being written out during self healing.
*/
if ((zio->io_flags & ZIO_FLAG_DIO_READ) &&
(zio->io_flags & ZIO_FLAG_DIO_CHKSUM_ERR)) {
(zio->io_post & ZIO_POST_DIO_CHKSUM_ERR)) {
zio_dio_chksum_verify_error_report(zio);
zio->io_error = vdev_mirror_worst_error(mm);
ASSERT3U(zio->io_error, ==, ECKSUM);