diff options
| author | Konstantin Belousov <kib@FreeBSD.org> | 2024-10-05 09:08:51 +0000 |
|---|---|---|
| committer | Konstantin Belousov <kib@FreeBSD.org> | 2024-10-07 08:22:12 +0000 |
| commit | f186252e0d6ef970a23c6af12ec34003df56055d (patch) | |
| tree | 1431a3655004fd4dceba7229aaa149673663585c | |
| parent | 34935a6b3723422ef27ce4eb80fbe52c3dab12fc (diff) | |
vm_object: add OBJ_SYSVSHM flag to indicate SysV shm backing object
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D46959
| -rw-r--r-- | sys/kern/sysv_shm.c | 4 | ||||
| -rw-r--r-- | sys/vm/vm_object.h | 1 |
2 files changed, 5 insertions, 0 deletions
diff --git a/sys/kern/sysv_shm.c b/sys/kern/sysv_shm.c index 90b95c7db8e7..4dbe77f19b07 100644 --- a/sys/kern/sysv_shm.c +++ b/sys/kern/sysv_shm.c @@ -742,6 +742,10 @@ shmget_allocate_segment(struct thread *td, key_t key, size_t size, int mode) return (ENOMEM); } + VM_OBJECT_WLOCK(shm_object); + vm_object_set_flag(shm_object, OBJ_SYSVSHM); + VM_OBJECT_WUNLOCK(shm_object); + shmseg->object = shm_object; shmseg->u.shm_perm.cuid = shmseg->u.shm_perm.uid = cred->cr_uid; shmseg->u.shm_perm.cgid = shmseg->u.shm_perm.gid = cred->cr_gid; diff --git a/sys/vm/vm_object.h b/sys/vm/vm_object.h index 3eaab1282fa6..73284fddd2a6 100644 --- a/sys/vm/vm_object.h +++ b/sys/vm/vm_object.h @@ -201,6 +201,7 @@ struct vm_object { mapping flag */ #define OBJ_PAGERPRIV1 0x00004000 /* Pager private */ #define OBJ_PAGERPRIV2 0x00008000 /* Pager private */ +#define OBJ_SYSVSHM 0x00010000 /* SysV SHM */ /* * Helpers to perform conversion between vm_object page indexes and offsets. |