From a2b6f2ab3e144f8e23666aafeba0e4d9ea4b7975 Mon Sep 17 00:00:00 2001 From: "Vishal Moola (Oracle)" Date: Wed, 7 Jun 2023 13:41:19 -0700 Subject: [PATCH] afs: Fix dangling folio ref counts in writeback Commit acc8d8588cb7 converted afs_writepages_region() to write back a folio batch. If writeback needs rescheduling, the function exits without dropping the references to the folios in fbatch. This patch fixes that. [DH: Moved the added line before the _leave()] Fixes: acc8d8588cb7 ("afs: convert afs_writepages_region() to use filemap_get_folios_tag()") Signed-off-by: Vishal Moola (Oracle) Signed-off-by: David Howells cc: Marc Dionne cc: linux-afs@lists.infradead.org Link: https://lore.kernel.org/r/20230607204120.89416-1-vishal.moola@gmail.com/ --- fs/afs/write.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/afs/write.c b/fs/afs/write.c index c822d60..fd43302 100644 --- a/fs/afs/write.c +++ b/fs/afs/write.c @@ -763,6 +763,7 @@ static int afs_writepages_region(struct address_space *mapping, if (wbc->sync_mode == WB_SYNC_NONE) { if (skips >= 5 || need_resched()) { *_next = start; + folio_batch_release(&fbatch); _leave(" = 0 [%llx]", *_next); return 0; } -- 2.7.4