diff options
| author | Mateusz Piotrowski <0mp@FreeBSD.org> | 2025-10-24 18:08:31 +0000 |
|---|---|---|
| committer | Mateusz Piotrowski <0mp@FreeBSD.org> | 2025-11-08 11:04:20 +0000 |
| commit | d8097cf79cfa1d74a3b38ca28f88f68d2e13f710 (patch) | |
| tree | 4dd8e23446a2885070a0263af29071b2480faf23 | |
| parent | f1424dfe45b8b0f05d5fda20c155bc8937d308fb (diff) | |
deadfs.9: Document
Reviewed by: kib
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D53334
(cherry picked from commit daa6660f899309f832bba0c7ac72dada125cfed5)
| -rw-r--r-- | share/man/man9/Makefile | 1 | ||||
| -rw-r--r-- | share/man/man9/deadfs.9 | 36 |
2 files changed, 37 insertions, 0 deletions
diff --git a/share/man/man9/Makefile b/share/man/man9/Makefile index a4d4a58c350d..4cea099b6c07 100644 --- a/share/man/man9/Makefile +++ b/share/man/man9/Makefile @@ -90,6 +90,7 @@ MAN= accept_filter.9 \ DECLARE_MODULE.9 \ DEFINE_IFUNC.9 \ DELAY.9 \ + deadfs.9 \ devclass.9 \ devclass_find.9 \ devclass_get_device.9 \ diff --git a/share/man/man9/deadfs.9 b/share/man/man9/deadfs.9 new file mode 100644 index 000000000000..360451266625 --- /dev/null +++ b/share/man/man9/deadfs.9 @@ -0,0 +1,36 @@ +.\" +.\" SPDX-License-Identifier: BSD-2-Clause +.\" +.\" Copyright (c) 2025 Mateusz Piotrowski <0mp@FreeBSD.org> +.\" +.Dd October 24, 2025 +.Dt DEADFS 9 +.Os +.Sh NAME +.Nm deadfs +.Nd pseudo-filesystem to own reclaimed vnodes +.Sh DESCRIPTION +The +.Nm +file system implements operations that do not modify any data +and instead return indications of invalid IO. +Its role is to provide a fallback vnode operations vector for reclaimed +.Xr vnode 9 Ap s . +.Pp +It is a kernel-only pseudo-file system and so cannot be mounted from userspace. +.Sh SEE ALSO +.Xr insmntque 9 , +.Xr vnode 9 , +.Xr VOP_RECLAIM 9 +.Sh HISTORY +UNIX System Manager's Manual (SMM) for +.Bx 4.4 +described +.Nm +as a file system +.Dq where rejected vnods go to die . +.Sh AUTHORS +The +.Nm +manual page was written by +.An Mateusz Piotrowski Aq Mt 0mp@FreeBSD.org . |