diff options
Diffstat (limited to 'sys/uvm/uvm_map.h')
-rw-r--r-- | sys/uvm/uvm_map.h | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/sys/uvm/uvm_map.h b/sys/uvm/uvm_map.h index 48115624b59..bb511e2ed6e 100644 --- a/sys/uvm/uvm_map.h +++ b/sys/uvm/uvm_map.h @@ -1,4 +1,4 @@ -/* $OpenBSD: uvm_map.h,v 1.63 2019/11/01 19:18:29 mpi Exp $ */ +/* $OpenBSD: uvm_map.h,v 1.64 2019/11/02 09:36:08 mpi Exp $ */ /* $NetBSD: uvm_map.h,v 1.24 2001/02/18 21:19:08 chs Exp $ */ /* @@ -287,15 +287,19 @@ RBT_PROTOTYPE(uvm_map_addr, vm_map_entry, daddrs.addr_entry, * * * read_locks and write_locks are used in lock debugging code. + * + * Locks used to protect struct members in this file: + * I immutable after creation or exec(2) + * v `vm_map_lock' (this map `lock' or `mtx') */ struct vm_map { - struct pmap * pmap; /* Physical map */ + struct pmap *pmap; /* [I] Physical map */ struct rwlock lock; /* Lock for map data */ struct mutex mtx; - u_long sserial; /* counts stack changes */ - u_long wserial; /* counts PROT_WRITE increases */ + u_long sserial; /* [v] # stack changes */ + u_long wserial; /* [v] # PROT_WRITE increases */ - struct uvm_map_addr addr; /* Entry tree, by addr */ + struct uvm_map_addr addr; /* [v] Entry tree, by addr */ vsize_t size; /* virtual size */ int ref_count; /* Reference count */ @@ -303,16 +307,16 @@ struct vm_map { struct mutex flags_lock; /* flags lock */ unsigned int timestamp; /* Version number */ - vaddr_t min_offset; /* First address in map. */ - vaddr_t max_offset; /* Last address in map. */ + vaddr_t min_offset; /* [I] First address in map. */ + vaddr_t max_offset; /* [I] Last address in map. */ /* * Allocation overflow regions. */ - vaddr_t b_start; /* Start for brk() alloc. */ - vaddr_t b_end; /* End for brk() alloc. */ - vaddr_t s_start; /* Start for stack alloc. */ - vaddr_t s_end; /* End for stack alloc. */ + vaddr_t b_start; /* [v] Start for brk() alloc. */ + vaddr_t b_end; /* [v] End for brk() alloc. */ + vaddr_t s_start; /* [v] Start for stack alloc. */ + vaddr_t s_end; /* [v] End for stack alloc. */ /* * Special address selectors. |