duff/android_kernel_motorola_sm6225
1
0 Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

mm/ksm: Remove reuse_ksm_page()

Browse Source 
Remove the function as the last reference has gone away with the do_wp_page()
changes.

Mot-CRs-fixed: (CR)
CVE-Fixed: CVE-2020-29374
Bug: 174737879

Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Git-commit: 1a0cf26323c80e2f1c58fc04f15686de61bfab0c
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Change-Id: Icd11ae747c4b0b9ddd81b8b3c5e463ed88abea9c
Signed-off-by: Zhenhua Huang <zhenhuah@codeaurora.org>
Signed-off-by: Gajjala Chakradhar <gajjalac@motorola.com>
Reviewed-on: https://gerrit.mot.com/2313291
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Konstantin Makariev <kmakariev@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
Peter Xu authored and Gilberto Gambugge committed 2023-06-01 00:51:08 -03:00
1 parent 9d2b9e1615
commit 4a77274788
2 files changed
-32
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

include/linux/ksm.h
-7
View File
@@ -53,8 +53,6 @@ struct page *ksm_might_need_to_copy(struct page *page,
void rmap_walk_ksm(struct page *page, struct rmap_walk_control *rwc);
void ksm_migrate_page(struct page *newpage, struct page *oldpage);
bool reuse_ksm_page(struct page *page,
struct vm_area_struct *vma, unsigned long address);
#else /* !CONFIG_KSM */
@@ -88,11 +86,6 @@ static inline void rmap_walk_ksm(struct page *page,
static inline void ksm_migrate_page(struct page *newpage, struct page *oldpage)
{
}
static inline bool reuse_ksm_page(struct page *page,
struct vm_area_struct *vma, unsigned long address)
{
return false;
}
#endif /* CONFIG_MMU */
#endif /* !CONFIG_KSM */
mm/ksm.c
-25
View File
@@ -2650,31 +2650,6 @@ again:
goto again;
}
bool reuse_ksm_page(struct page *page,
struct vm_area_struct *vma,
unsigned long address)
{
#ifdef CONFIG_DEBUG_VM
if (WARN_ON(is_zero_pfn(page_to_pfn(page))) ||
WARN_ON(!page_mapped(page)) ||
WARN_ON(!PageLocked(page))) {
dump_page(page, "reuse_ksm_page");
return false;
}
#endif
if (PageSwapCache(page) || !page_stable_node(page))
return false;
/* Prohibit parallel get_ksm_page() */
if (!page_ref_freeze(page, 1))
return false;
page_move_anon_rmap(page, vma);
page->index = linear_page_index(vma, address);
page_ref_unfreeze(page, 1);
return true;
}
#ifdef CONFIG_MIGRATION
void ksm_migrate_page(struct page *newpage, struct page *oldpage)
{