Date: Tue, 21 Jul 2026 18:28:06 +0000 From: Ed Maste <emaste@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: caabdb3aefdc - main - contigmalloc.9: Note that M_WAITOK may still return NULL Message-ID: <6a5fba36.3d93d.694b6c5c@gitrepo.freebsd.org>
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The branch main has been updated by emaste: URL: https://cgit.FreeBSD.org/src/commit/?id=caabdb3aefdc45cae90203210034086801fa9005 commit caabdb3aefdc45cae90203210034086801fa9005 Author: Ed Maste <emaste@FreeBSD.org> AuthorDate: 2026-07-21 18:10:00 +0000 Commit: Ed Maste <emaste@FreeBSD.org> CommitDate: 2026-07-21 18:27:47 +0000 contigmalloc.9: Note that M_WAITOK may still return NULL Reviewed by: markj, bapt Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D58382 --- share/man/man9/contigmalloc.9 | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/share/man/man9/contigmalloc.9 b/share/man/man9/contigmalloc.9 index 2e5d55ae8ba1..a9ebaf100eb9 100644 --- a/share/man/man9/contigmalloc.9 +++ b/share/man/man9/contigmalloc.9 @@ -23,7 +23,7 @@ .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE .\" POSSIBILITY OF SUCH DAMAGE. .\" -.Dd July 26, 2024 +.Dd July 21, 2026 .Dt CONTIGMALLOC 9 .Os .Sh NAME @@ -124,6 +124,15 @@ function returns a kernel virtual address if allocation succeeds, or .Dv NULL otherwise. +Note that in contrast with +.Xr malloc 9 , +.Fn contigmalloc +may return +.Dv NULL +even if +.Dv M_WAITOK +is specified, if no physically congiguous range is available that meets the +specified constraints. .Sh EXAMPLES .Bd -literal void *p;home | help
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