From: Luis Chamberlain <[email protected]>
shmem uses the shem_info_inode alloced, swapped to account
for allocated pages and swapped pages. In preparation for large
order folios adjust the accounting to use folio_nr_pages().
This should produce no functional changes yet as larger order
folios are not yet used or supported in shmem.
Signed-off-by: Luis Chamberlain <[email protected]>
Signed-off-by: Daniel Gomez <[email protected]>
---
mm/shmem.c | 20 +++++++++++---------
1 file changed, 11 insertions(+), 9 deletions(-)
diff --git a/mm/shmem.c b/mm/shmem.c
index 5c9e80207cbf..d41ee5983fd4 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -871,16 +871,16 @@ unsigned long shmem_partial_swap_usage(struct address_space *mapping,
pgoff_t start, pgoff_t end)
{
XA_STATE(xas, &mapping->i_pages, start);
- struct page *page;
+ struct folio *folio;
unsigned long swapped = 0;
unsigned long max = end - 1;
rcu_read_lock();
- xas_for_each(&xas, page, max) {
- if (xas_retry(&xas, page))
+ xas_for_each(&xas, folio, max) {
+ if (xas_retry(&xas, folio))
continue;
- if (xa_is_value(page))
- swapped++;
+ if (xa_is_value(folio))
+ swapped += folio_nr_pages(folio);
if (xas.xa_index == max)
break;
if (need_resched()) {
@@ -1530,7 +1530,7 @@ static int shmem_writepage(struct page *page, struct writeback_control *wbc)
if (add_to_swap_cache(folio, swap,
__GFP_HIGH | __GFP_NOMEMALLOC | __GFP_NOWARN,
NULL) == 0) {
- shmem_recalc_inode(inode, 0, 1);
+ shmem_recalc_inode(inode, 0, folio_nr_pages(folio));
swap_shmem_alloc(swap);
shmem_delete_from_page_cache(folio, swp_to_radix_entry(swap));
@@ -1803,6 +1803,7 @@ static void shmem_set_folio_swapin_error(struct inode *inode, pgoff_t index,
struct address_space *mapping = inode->i_mapping;
swp_entry_t swapin_error;
void *old;
+ long num_swap_pages;
swapin_error = make_poisoned_swp_entry();
old = xa_cmpxchg_irq(&mapping->i_pages, index,
@@ -1812,13 +1813,14 @@ static void shmem_set_folio_swapin_error(struct inode *inode, pgoff_t index,
return;
folio_wait_writeback(folio);
+ num_swap_pages = folio_nr_pages(folio);
delete_from_swap_cache(folio);
/*
* Don't treat swapin error folio as alloced. Otherwise inode->i_blocks
* won't be 0 when inode is released and thus trigger WARN_ON(i_blocks)
* in shmem_evict_inode().
*/
- shmem_recalc_inode(inode, -1, -1);
+ shmem_recalc_inode(inode, -num_swap_pages, -num_swap_pages);
swap_free(swap);
}
@@ -1905,7 +1907,7 @@ static int shmem_swapin_folio(struct inode *inode, pgoff_t index,
if (error)
goto failed;
- shmem_recalc_inode(inode, 0, -1);
+ shmem_recalc_inode(inode, 0, -folio_nr_pages(folio));
if (sgp == SGP_WRITE)
folio_mark_accessed(folio);
@@ -2665,7 +2667,7 @@ int shmem_mfill_atomic_pte(pmd_t *dst_pmd,
if (ret)
goto out_delete_from_cache;
- shmem_recalc_inode(inode, 1, 0);
+ shmem_recalc_inode(inode, folio_nr_pages(folio), 0);
folio_unlock(folio);
return 0;
out_delete_from_cache:
--
2.39.2