mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2026-03-10 20:36:21 +03:00
21bbe7cb67
To avoid read errors with transaction open dmu_tx_check_ioerr() is used to read everything required in advance. But there seems to be a chance for the buffer to evicted from dbuf cache in between, which result in immediate eviction from ARC, which may require additional disk read later in a place where error handling is problematic. To partially workaround this introduce a new flag DMU_IS_PREFETCH, relayed to ARC as ARC_FLAG_PREFETCH | ARC_FLAG_PRESCIENT_PREFETCH, making ARC delay eviction by at least several seconds, or till the actual read inside the transaction, that will promote it to demand access. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Tony Hutter <hutter2@llnl.gov> Signed-off-by: Alexander Motin <alexander.motin@TrueNAS.com> Closes #18160 |
||
|---|---|---|
| .. | ||
| avl | ||
| icp | ||
| lua | ||
| nvpair | ||
| os | ||
| zcommon | ||
| zfs | ||
| zstd | ||
| .gitignore | ||
| Kbuild.in | ||
| Makefile.bsd | ||
| Makefile.in | ||