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19bf54b764
Before this change ZAP called dnode_hold() for almost every block access, that was clearly visible in profiler under heavy load, such as BRT. This patch makes it always hold the dnode reference between zap_lockdir() and zap_unlockdir(). It allows to avoid most of dnode operations between those. It also adds several new _by_dnode() APIs to ZAP and uses them in BRT code. Also adds dmu_prefetch_by_dnode() variant and uses it in the ZAP code. After this there remains only one call to dmu_buf_dnode_enter(), which seems to be unneeded. So remove the call and the functions. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Closes #15951 |
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| .. | ||
| os | ||
| sys | ||
| .gitignore | ||
| cityhash.h | ||
| libnvpair.h | ||
| libuutil_common.h | ||
| libuutil_impl.h | ||
| libuutil.h | ||
| libzfs_core.h | ||
| libzfs.h | ||
| libzfsbootenv.h | ||
| libzutil.h | ||
| Makefile.am | ||
| thread_pool.h | ||
| zfeature_common.h | ||
| zfs_comutil.h | ||
| zfs_deleg.h | ||
| zfs_fletcher.h | ||
| zfs_namecheck.h | ||
| zfs_prop.h | ||