diff mbox series

[03/13] writeback: also update wbc->nr_to_write on writeback failure

Message ID 20240203071147.862076-4-hch@lst.de (mailing list archive)
State New
Headers show
Series [01/13] writeback: remove a duplicate prototype for tag_pages_for_writeback | expand

Commit Message

Christoph Hellwig Feb. 3, 2024, 7:11 a.m. UTC 
When exiting write_cache_pages early due to a non-integrity write
failure, wbc->nr_to_write currently doesn't account for the folio
we just failed to write.  This doesn't matter because the callers
always ingore the value on a failure, but moving the update to
common code will allow to simplify the code, so do it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Acked-by: Dave Chinner <dchinner@redhat.com>
---
 mm/page-writeback.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index b4d978f77b0b69..ee9eb347890cd3 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -2473,6 +2473,7 @@  int write_cache_pages(struct address_space *mapping,
 			trace_wbc_writepage(wbc, inode_to_bdi(mapping->host));
 			error = writepage(folio, wbc, data);
 			nr = folio_nr_pages(folio);
+			wbc->nr_to_write -= nr;
 			if (unlikely(error)) {
 				/*
 				 * Handle errors according to the type of
@@ -2506,7 +2507,6 @@  int write_cache_pages(struct address_space *mapping,
 			 * we tagged for writeback prior to entering this loop.
 			 */
 			done_index = folio->index + nr;
-			wbc->nr_to_write -= nr;
 			if (wbc->nr_to_write <= 0 &&
 			    wbc->sync_mode == WB_SYNC_NONE) {
 				done = 1;