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-rw-r--r--mm/page_io.c84
1 files changed, 43 insertions, 41 deletions
diff --git a/mm/page_io.c b/mm/page_io.c
index cb559ae324c6..ae2b49055e43 100644
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -201,7 +201,12 @@ int swap_writepage(struct page *page, struct writeback_control *wbc)
folio_end_writeback(folio);
return 0;
}
- __swap_writepage(&folio->page, wbc);
+ if (!mem_cgroup_zswap_writeback_enabled(folio_memcg(folio))) {
+ folio_mark_dirty(folio);
+ return AOP_WRITEPAGE_ACTIVATE;
+ }
+
+ __swap_writepage(folio, wbc);
return 0;
}
@@ -288,16 +293,16 @@ static void sio_write_complete(struct kiocb *iocb, long ret)
mempool_free(sio, sio_pool);
}
-static void swap_writepage_fs(struct page *page, struct writeback_control *wbc)
+static void swap_writepage_fs(struct folio *folio, struct writeback_control *wbc)
{
struct swap_iocb *sio = NULL;
- struct swap_info_struct *sis = page_swap_info(page);
+ struct swap_info_struct *sis = swp_swap_info(folio->swap);
struct file *swap_file = sis->swap_file;
- loff_t pos = page_file_offset(page);
+ loff_t pos = folio_file_pos(folio);
- count_swpout_vm_event(page_folio(page));
- set_page_writeback(page);
- unlock_page(page);
+ count_swpout_vm_event(folio);
+ folio_start_writeback(folio);
+ folio_unlock(folio);
if (wbc->swap_plug)
sio = *wbc->swap_plug;
if (sio) {
@@ -315,8 +320,8 @@ static void swap_writepage_fs(struct page *page, struct writeback_control *wbc)
sio->pages = 0;
sio->len = 0;
}
- bvec_set_page(&sio->bvec[sio->pages], page, thp_size(page), 0);
- sio->len += thp_size(page);
+ bvec_set_folio(&sio->bvec[sio->pages], folio, folio_size(folio), 0);
+ sio->len += folio_size(folio);
sio->pages += 1;
if (sio->pages == ARRAY_SIZE(sio->bvec) || !wbc->swap_plug) {
swap_write_unplug(sio);
@@ -326,17 +331,16 @@ static void swap_writepage_fs(struct page *page, struct writeback_control *wbc)
*wbc->swap_plug = sio;
}
-static void swap_writepage_bdev_sync(struct page *page,
+static void swap_writepage_bdev_sync(struct folio *folio,
struct writeback_control *wbc, struct swap_info_struct *sis)
{
struct bio_vec bv;
struct bio bio;
- struct folio *folio = page_folio(page);
bio_init(&bio, sis->bdev, &bv, 1,
REQ_OP_WRITE | REQ_SWAP | wbc_to_write_flags(wbc));
- bio.bi_iter.bi_sector = swap_page_sector(page);
- __bio_add_page(&bio, page, thp_size(page), 0);
+ bio.bi_iter.bi_sector = swap_folio_sector(folio);
+ bio_add_folio_nofail(&bio, folio, folio_size(folio), 0);
bio_associate_blkg_from_page(&bio, folio);
count_swpout_vm_event(folio);
@@ -348,18 +352,17 @@ static void swap_writepage_bdev_sync(struct page *page,
__end_swap_bio_write(&bio);
}
-static void swap_writepage_bdev_async(struct page *page,
+static void swap_writepage_bdev_async(struct folio *folio,
struct writeback_control *wbc, struct swap_info_struct *sis)
{
struct bio *bio;
- struct folio *folio = page_folio(page);
bio = bio_alloc(sis->bdev, 1,
REQ_OP_WRITE | REQ_SWAP | wbc_to_write_flags(wbc),
GFP_NOIO);
- bio->bi_iter.bi_sector = swap_page_sector(page);
+ bio->bi_iter.bi_sector = swap_folio_sector(folio);
bio->bi_end_io = end_swap_bio_write;
- __bio_add_page(bio, page, thp_size(page), 0);
+ bio_add_folio_nofail(bio, folio, folio_size(folio), 0);
bio_associate_blkg_from_page(bio, folio);
count_swpout_vm_event(folio);
@@ -368,22 +371,22 @@ static void swap_writepage_bdev_async(struct page *page,
submit_bio(bio);
}
-void __swap_writepage(struct page *page, struct writeback_control *wbc)
+void __swap_writepage(struct folio *folio, struct writeback_control *wbc)
{
- struct swap_info_struct *sis = page_swap_info(page);
+ struct swap_info_struct *sis = swp_swap_info(folio->swap);
- VM_BUG_ON_PAGE(!PageSwapCache(page), page);
+ VM_BUG_ON_FOLIO(!folio_test_swapcache(folio), folio);
/*
* ->flags can be updated non-atomicially (scan_swap_map_slots),
* but that will never affect SWP_FS_OPS, so the data_race
* is safe.
*/
if (data_race(sis->flags & SWP_FS_OPS))
- swap_writepage_fs(page, wbc);
+ swap_writepage_fs(folio, wbc);
else if (sis->flags & SWP_SYNCHRONOUS_IO)
- swap_writepage_bdev_sync(page, wbc, sis);
+ swap_writepage_bdev_sync(folio, wbc, sis);
else
- swap_writepage_bdev_async(page, wbc, sis);
+ swap_writepage_bdev_async(folio, wbc, sis);
}
void swap_write_unplug(struct swap_iocb *sio)
@@ -422,12 +425,11 @@ static void sio_read_complete(struct kiocb *iocb, long ret)
mempool_free(sio, sio_pool);
}
-static void swap_readpage_fs(struct page *page,
- struct swap_iocb **plug)
+static void swap_read_folio_fs(struct folio *folio, struct swap_iocb **plug)
{
- struct swap_info_struct *sis = page_swap_info(page);
+ struct swap_info_struct *sis = swp_swap_info(folio->swap);
struct swap_iocb *sio = NULL;
- loff_t pos = page_file_offset(page);
+ loff_t pos = folio_file_pos(folio);
if (plug)
sio = *plug;
@@ -446,8 +448,8 @@ static void swap_readpage_fs(struct page *page,
sio->pages = 0;
sio->len = 0;
}
- bvec_set_page(&sio->bvec[sio->pages], page, thp_size(page), 0);
- sio->len += thp_size(page);
+ bvec_set_folio(&sio->bvec[sio->pages], folio, folio_size(folio), 0);
+ sio->len += folio_size(folio);
sio->pages += 1;
if (sio->pages == ARRAY_SIZE(sio->bvec) || !plug) {
swap_read_unplug(sio);
@@ -457,15 +459,15 @@ static void swap_readpage_fs(struct page *page,
*plug = sio;
}
-static void swap_readpage_bdev_sync(struct page *page,
+static void swap_read_folio_bdev_sync(struct folio *folio,
struct swap_info_struct *sis)
{
struct bio_vec bv;
struct bio bio;
bio_init(&bio, sis->bdev, &bv, 1, REQ_OP_READ);
- bio.bi_iter.bi_sector = swap_page_sector(page);
- __bio_add_page(&bio, page, thp_size(page), 0);
+ bio.bi_iter.bi_sector = swap_folio_sector(folio);
+ bio_add_folio_nofail(&bio, folio, folio_size(folio), 0);
/*
* Keep this task valid during swap readpage because the oom killer may
* attempt to access it in the page fault retry time check.
@@ -477,23 +479,23 @@ static void swap_readpage_bdev_sync(struct page *page,
put_task_struct(current);
}
-static void swap_readpage_bdev_async(struct page *page,
+static void swap_read_folio_bdev_async(struct folio *folio,
struct swap_info_struct *sis)
{
struct bio *bio;
bio = bio_alloc(sis->bdev, 1, REQ_OP_READ, GFP_KERNEL);
- bio->bi_iter.bi_sector = swap_page_sector(page);
+ bio->bi_iter.bi_sector = swap_folio_sector(folio);
bio->bi_end_io = end_swap_bio_read;
- __bio_add_page(bio, page, thp_size(page), 0);
+ bio_add_folio_nofail(bio, folio, folio_size(folio), 0);
count_vm_event(PSWPIN);
submit_bio(bio);
}
-void swap_readpage(struct page *page, bool synchronous, struct swap_iocb **plug)
+void swap_read_folio(struct folio *folio, bool synchronous,
+ struct swap_iocb **plug)
{
- struct folio *folio = page_folio(page);
- struct swap_info_struct *sis = page_swap_info(page);
+ struct swap_info_struct *sis = swp_swap_info(folio->swap);
bool workingset = folio_test_workingset(folio);
unsigned long pflags;
bool in_thrashing;
@@ -517,11 +519,11 @@ void swap_readpage(struct page *page, bool synchronous, struct swap_iocb **plug)
folio_mark_uptodate(folio);
folio_unlock(folio);
} else if (data_race(sis->flags & SWP_FS_OPS)) {
- swap_readpage_fs(page, plug);
+ swap_read_folio_fs(folio, plug);
} else if (synchronous || (sis->flags & SWP_SYNCHRONOUS_IO)) {
- swap_readpage_bdev_sync(page, sis);
+ swap_read_folio_bdev_sync(folio, sis);
} else {
- swap_readpage_bdev_async(page, sis);
+ swap_read_folio_bdev_async(folio, sis);
}
if (workingset) {
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-05-01 05:51:01 +0000