Page MenuHomeFreeBSD
Differential D50242

mbuf: Allow clusters to fill an entire jumbo page.
ClosedPublic
Actions

Authored by des on May 7 2025, 5:54 PM.
Tags
None
Referenced Files
F173440971: D50242.diff
Fri, Sep 25, 11:09 PM
Unknown Object (File)
Thu, Sep 24, 7:40 AM
Unknown Object (File)
Thu, Sep 24, 4:41 AM
Unknown Object (File)
Sun, Sep 13, 10:36 AM
Unknown Object (File)
Fri, Aug 28, 3:17 PM
Unknown Object (File)
Thu, Aug 27, 7:16 PM
Unknown Object (File)
Aug 21 2026, 7:24 PM
Unknown Object (File)
Aug 14 2026, 1:33 AM
View All Files
Subscribers
ae
glebius
imp
olce
siderop1_netapp.com

Details

Reviewers
brooks
siderop1_netapp.com
kevans
Group Reviewers
Klara
Commits
rGcbc3efab49aa: mbuf: Allow clusters to fill an entire jumbo page.
rG271128b06986: mbuf: Allow clusters to fill an entire jumbo page.
Summary

The assumption that MCLBYTES == MJUMPAGESIZE can only happen if pages
are small is incorrect: it can also happen if MCLSHIFT is adjusted to
increase the size of clusters. Restore the ability to have clusters
fill a jumbo page, while still disallowing them from exceeding them.

MFC after: 1 week
Fixes: 840327e5ddf3, 9c3ad5ba932b
Sponsored by: NetApp, Inc.
Sponsored by: Klara, Inc.

Diff Detail

Repository
rG FreeBSD src repository
Lint
Lint Not Applicable
Unit
Tests Not Applicable

Revision Contents
Changeset List

PathSize
sys/
conf/
3 lines
dev/
cxgbe/
4 lines
8 lines
kern/
4 lines
sys/
6 lines

Diff 155075

View Options

sys/conf/NOTES

Loading...
View Options

sys/dev/cxgbe/adapter.h

Loading...
View Options

sys/dev/cxgbe/t4_sge.c

Loading...
View Options

sys/kern/kern_mbuf.c

Loading...
View Options

sys/sys/mbuf.h

Loading...