diff options
author | Mark Johnston <markj@FreeBSD.org> | 2024-10-06 13:07:31 +0000 |
---|---|---|
committer | Mark Johnston <markj@FreeBSD.org> | 2024-10-15 13:45:28 +0000 |
commit | 8a5a9dbf389e86d278764ababf2f1eb8ee276680 (patch) | |
tree | f32aa00455dc1820ae343424e62b0791fb5bfbce | |
parent | 81da8e39f78956441a27eb6bb55ac16170a21a14 (diff) |
vm_object: Widen the flags field
Take advantage of a nearby 2-byte hole to avoid growing the struct.
This way, only the offsets of "flags" and "pg_color" change. Bump
__FreeBSD_version since some out-of-tree kernel modules may access these
fields, though I haven't found any examples so far.
Reviewed by: kib
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D35905
(cherry picked from commit 9d52823bf1dfac237e58b5208299aaa5e2df42e9)
-rw-r--r-- | sys/sys/param.h | 2 | ||||
-rw-r--r-- | sys/vm/vm_object.h | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/sys/sys/param.h b/sys/sys/param.h index 697a96cca916..a900131fe8ec 100644 --- a/sys/sys/param.h +++ b/sys/sys/param.h @@ -75,7 +75,7 @@ * cannot include sys/param.h and should only be updated here. */ #undef __FreeBSD_version -#define __FreeBSD_version 1401502 +#define __FreeBSD_version 1401503 /* * __FreeBSD_kernel__ indicates that this system uses the kernel of FreeBSD, diff --git a/sys/vm/vm_object.h b/sys/vm/vm_object.h index 3e82a5dc7430..1d00bee603f6 100644 --- a/sys/vm/vm_object.h +++ b/sys/vm/vm_object.h @@ -110,8 +110,8 @@ struct vm_object { int shadow_count; /* how many objects that this is a shadow for */ vm_memattr_t memattr; /* default memory attribute for pages */ objtype_t type; /* type of pager */ - u_short flags; /* see below */ u_short pg_color; /* (c) color of first page in obj */ + u_int flags; /* see below */ blockcount_t paging_in_progress; /* (a) Paging (in or out) so don't collapse or destroy */ blockcount_t busy; /* (a) object is busy, disallow page busy. */ int resident_page_count; /* number of resident pages */ |