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Rob Norris 92da3e18c8 ZIL: flag crashed LWBs so we know not to process them

If the ZIL crashed, any outstanding LWBs are no longer interesting, so
if they return, we need to just clean them up and return, not try to do
any work on them. This is true even if they return success, as that may
be long after the pool suspended and resumed, depending on when/if the
kernel decides to return the IO to us. In particular, we must not try to
get the "next" LWB from zl_lwb_list, since they're no longer on that
list.

So, we put a flag on in-flight LWBs in zil_crash() when we move them
from zl_lwb_list to zl_lwb_crash_list, so we know what's going on when
they return.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #17622

2025-08-12 13:24:16 -07:00

avl

Prefer VERIFY0P(n) over VERIFY(n == NULL)

2025-08-07 11:41:37 -07:00

icp

Prefer VERIFY0(n) over VERIFY(n == 0)

2025-08-07 11:40:59 -07:00

lua

SPDX: license tags: MIT

2025-03-13 17:56:54 -07:00

nvpair

Prefer VERIFY0P(n) over VERIFY3P(n, ==, NULL)