The page is only used to get the mapping, so the folio will do just as
well. Both callers already have a folio available, so this saves a call
to compound_head().
Link: https://lkml.kernel.org/r/20240412193510.2356957-7-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Jane Chu <jane.chu@oracle.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
struct vm_area_struct *vma,
unsigned long address);
-struct address_space *hugetlb_page_mapping_lock_write(struct page *hpage);
+struct address_space *hugetlb_folio_mapping_lock_write(struct folio *folio);
extern int sysctl_hugetlb_shm_group;
extern struct list_head huge_boot_pages[MAX_NUMNODES];
return 0;
}
-static inline struct address_space *hugetlb_page_mapping_lock_write(
- struct page *hpage)
+static inline struct address_space *hugetlb_folio_mapping_lock_write(
+ struct folio *folio)
{
return NULL;
}
/*
* Find and lock address space (mapping) in write mode.
*
- * Upon entry, the page is locked which means that page_mapping() is
+ * Upon entry, the folio is locked which means that folio_mapping() is
* stable. Due to locking order, we can only trylock_write. If we can
* not get the lock, simply return NULL to caller.
*/
-struct address_space *hugetlb_page_mapping_lock_write(struct page *hpage)
+struct address_space *hugetlb_folio_mapping_lock_write(struct folio *folio)
{
- struct address_space *mapping = page_mapping(hpage);
+ struct address_space *mapping = folio_mapping(folio);
if (!mapping)
return mapping;
* TTU_RMAP_LOCKED to indicate we have taken the lock
* at this higher level.
*/
- mapping = hugetlb_page_mapping_lock_write(hpage);
+ mapping = hugetlb_folio_mapping_lock_write(folio);
if (mapping) {
try_to_unmap(folio, ttu|TTU_RMAP_LOCKED);
i_mmap_unlock_write(mapping);
* semaphore in write mode here and set TTU_RMAP_LOCKED
* to let lower levels know we have taken the lock.
*/
- mapping = hugetlb_page_mapping_lock_write(&src->page);
+ mapping = hugetlb_folio_mapping_lock_write(src);
if (unlikely(!mapping))
goto unlock_put_anon;