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Mon, 13 Oct 2025 00:30:15 GMT (envelope-from git) Date: Mon, 13 Oct 2025 00:30:15 GMT Message-Id: <202510130030.59D0UFtZ047223@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Konstantin Belousov Subject: git: 0c7c1c27ea9e - stable/14 - vm_fault_busy_sleep(): update comment after addition of allocflags arg List-Id: Commits to the stable branches of the FreeBSD src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-branches List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-branches@freebsd.org Sender: owner-dev-commits-src-branches@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kib X-Git-Repository: src X-Git-Refname: refs/heads/stable/14 X-Git-Reftype: branch X-Git-Commit: 0c7c1c27ea9eed8aefa236daa13eabb5bd050cfc Auto-Submitted: auto-generated The branch stable/14 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=0c7c1c27ea9eed8aefa236daa13eabb5bd050cfc commit 0c7c1c27ea9eed8aefa236daa13eabb5bd050cfc Author: Konstantin Belousov AuthorDate: 2025-09-15 00:52:47 +0000 Commit: Konstantin Belousov CommitDate: 2025-10-13 00:23:46 +0000 vm_fault_busy_sleep(): update comment after addition of allocflags arg (cherry picked from commit f1b656f14464c2e3ec4ab2eeade3b00dce4bd459) --- sys/vm/vm_fault.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/sys/vm/vm_fault.c b/sys/vm/vm_fault.c index aad112a652ed..9f7176eebabb 100644 --- a/sys/vm/vm_fault.c +++ b/sys/vm/vm_fault.c @@ -1440,11 +1440,10 @@ vm_fault_getpages(struct faultstate *fs, int *behindp, int *aheadp) * and we could end up trying to pagein and pageout the same page * simultaneously. * - * We can theoretically allow the busy case on a read fault if the page - * is marked valid, but since such pages are typically already pmap'd, - * putting that special case in might be more effort then it is worth. - * We cannot under any circumstances mess around with a shared busied - * page except, perhaps, to pmap it. + * We allow the busy case on a read fault if the page is valid. We + * cannot under any circumstances mess around with a shared busied + * page except, perhaps, to pmap it. This is controlled by the + * VM_ALLOC_SBUSY bit in the allocflags argument. */ static void vm_fault_busy_sleep(struct faultstate *fs, int allocflags)