Author: kib Date: Sun May 5 11:06:19 2019 New Revision: 347150 URL: https://svnweb.freebsd.org/changeset/base/347150
Log: Do not collapse objects with OBJ_NOSPLIT backing swap object. NOSPLIT swap objects are not anonymous, they are used by tmpfs regular files and POSIX shared memory. For such objects, collapse is not permitted. Reported by: mjg Reviewed by: markj, trasz Tested by: mjg, pho Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D19923 Modified: head/sys/vm/vm_object.c Modified: head/sys/vm/vm_object.c ============================================================================== --- head/sys/vm/vm_object.c Sun May 5 11:05:36 2019 (r347149) +++ head/sys/vm/vm_object.c Sun May 5 11:06:19 2019 (r347150) @@ -1748,7 +1748,8 @@ vm_object_collapse(vm_object_t object) VM_OBJECT_WLOCK(backing_object); if (backing_object->handle != NULL || (backing_object->type != OBJT_DEFAULT && - backing_object->type != OBJT_SWAP) || + (backing_object->type != OBJT_SWAP || + (backing_object->flags & OBJ_NOSPLIT) != 0)) || (backing_object->flags & OBJ_DEAD) || object->handle != NULL || (object->type != OBJT_DEFAULT && _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
