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afs: Fix dangling folio ref counts in writeback 

Commit acc8d8588c 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: acc8d8588c ("afs: convert afs_writepages_region() to use filemap_get_folios_tag()")
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Link: https://lore.kernel.org/r/20230607204120.89416-1-vishal.moola@gmail.com/
This commit is contained in:
Vishal Moola (Oracle) 2023-06-07 13:41:19 -07:00 committed by David Howells
parent 45a3e24f65
commit a2b6f2ab3e
1 changed files with 1 additions and 0 deletions
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1
fs/afs/write.c
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@ -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;
}