Diffusion FreeBSD src repository 5bd4c04a4e7f

vm_fault: add vm_fault_might_be_cow() helper
5bd4c04a4e7f
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Description

vm_fault: add vm_fault_might_be_cow() helper

The helper checks that the object containing the fs->m page is not the
top object in the shadow chain.

Reviewed by: alc, markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D51474

Details

Provenance

kib	Authored on Aug 14 2025, 3:39 AM

Reviewer

alc

Differential Revision

D51474: vm_fault: try to only sbusy valid page that is not writeable

Parents

rGc6b79f587f27: vm_fault_busy_sleep(): pass explicit allocflags for vm_page_busy_sleep()

Branches

Unknown

Tags

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Event Timeline

kib committed rG5bd4c04a4e7f: vm_fault: add vm_fault_might_be_cow() helper (authored by kib).Sep 14 2025, 7:12 PM

kib added an edge: D51474: vm_fault: try to only sbusy valid page that is not writeable.Sep 14 2025, 8:15 PM

kib mentioned this in rG0188344fc3ec: vm_fault: add vm_fault_might_be_cow() helper.Oct 11 2025, 5:09 AM

kib mentioned this in rGe7422f7dfd0e: vm_fault: add vm_fault_might_be_cow() helper.Oct 13 2025, 12:32 AM

Changes (1)

Path

Size

sys/

vm/

vm_fault.c

rG5bd4c04a4e7f

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