c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-23 19:04:45 +03:00
Code Issues Packages Projects Releases Wiki Activity

ZIL: Avoid dbuf_read() before dmu_sync().

Browse Source 
In most cases dmu_sync() works with dirty records directly and does
not need actual data. The only exception is dmu_sync_late_arrival().
To save some CPU time use dmu_buf_hold_noread*() in z*_get_data()
and explicitly call dbuf_read() in dmu_sync_late_arrival(). There
is also a chance that by that time TXG will already be synced and
we won't have to do it at all.

Reviewed-by: Brian Atkinson <batkinson@lanl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by:	Alexander Motin <mav@FreeBSD.org>
Sponsored by:	iXsystems, Inc.
Closes #15153
This commit is contained in:
Alexander Motin
2023-08-11 12:04:08 -04:00
committed by GitHub
parent 8ce2eba9e6
commit bdb7df4245
5 changed files with 16 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/sys/dmu_impl.h
-2
View File
@@ -247,8 +247,6 @@ typedef struct dmu_sendstatus {
void dmu_object_zapify(objset_t *, uint64_t, dmu_object_type_t, dmu_tx_t *);
void dmu_object_free_zapified(objset_t *, uint64_t, dmu_tx_t *);
int dmu_buf_hold_noread(objset_t *, uint64_t, uint64_t,
const void *, dmu_buf_t **);
#ifdef __cplusplus
}