Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
uprobes: use new_folio in __replace_page()
Saves several calls to compound_head().
Link: https://lkml.kernel.org/r/20220902194653.1739778-57-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
authored by
Matthew Wilcox (Oracle)
and committed by
Andrew Morton
82e66bf7
0c826c0b
+5
-4
+5
-4
kernel/events/uprobes.c
+5
-4
kernel/events/uprobes.c
···
155
155
struct page *old_page, struct page *new_page)
156
156
{
157
157
struct folio *old_folio = page_folio(old_page);
158
+
struct folio *new_folio;
158
159
struct mm_struct *mm = vma->vm_mm;
159
160
DEFINE_FOLIO_VMA_WALK(pvmw, old_folio, vma, addr, 0);
160
161
int err;
···
165
164
addr + PAGE_SIZE);
166
165
167
166
if (new_page) {
168
-
err = mem_cgroup_charge(page_folio(new_page), vma->vm_mm,
169
-
GFP_KERNEL);
167
+
new_folio = page_folio(new_page);
168
+
err = mem_cgroup_charge(new_folio, vma->vm_mm, GFP_KERNEL);
170
169
if (err)
171
170
return err;
172
171
}
···
181
180
VM_BUG_ON_PAGE(addr != pvmw.address, old_page);
182
181
183
182
if (new_page) {
184
-
get_page(new_page);
183
+
folio_get(new_folio);
185
184
page_add_new_anon_rmap(new_page, vma, addr);
186
-
lru_cache_add_inactive_or_unevictable(new_page, vma);
185
+
folio_add_lru_vma(new_folio, vma);
187
186
} else
188
187
/* no new page, just dec_mm_counter for old_page */
189
188
dec_mm_counter(mm, MM_ANONPAGES);