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Refactor "do write back only MAP_SHARED pages"

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* free_process_memory_range() always passes memobj to
  ihk_mc_pt_free_range()
* clear_range_*() don't flush page in fileobj with MF_PRIVATE flag

Fujitsu: POSTK_DEBUG_TEMP_FIX_87
Change-Id: I8d46d029b3fc51ca6f0e59d748a2fe93e324a374
This commit is contained in:
Masamichi Takagi
2018-10-12 13:37:50 +09:00
committed by Dominique Martinet
parent fb24dcea2e
commit 9cfc373538
7 changed files with 28 additions and 15 deletions
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7
kernel/fileobj.c
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@ -28,6 +28,7 @@
#include <syscall.h>
#include <rusage_private.h>
#include <debug.h>
#include <mman.h>
//#define DEBUG_PRINT_FILEOBJ
@ -186,7 +187,8 @@ static struct fileobj *obj_list_lookup(uintptr_t handle)
/***********************************************************************
* fileobj
*/
int fileobj_create(int fd, struct memobj **objp, int *maxprotp, uintptr_t virt_addr)
int fileobj_create(int fd, struct memobj **objp, int *maxprotp, int flags,
uintptr_t virt_addr)
{
ihk_mc_user_context_t ctx;
struct pager_create_result result __attribute__((aligned(64)));
@ -234,7 +236,8 @@ int fileobj_create(int fd, struct memobj **objp, int *maxprotp, uintptr_t virt_a
}
memset(newobj, 0, sizeof(*newobj));
newobj->memobj.ops = &fileobj_ops;
newobj->memobj.flags = MF_HAS_PAGER | MF_REG_FILE;
newobj->memobj.flags = MF_HAS_PAGER | MF_REG_FILE |
((flags & MAP_PRIVATE) ? MF_PRIVATE : 0);
newobj->handle = result.handle;
fileobj_page_hash_init(newobj);