[PATCH 05/15] mm: allow read-ahead with IOCB_NOWAIT set

Jens Axboe
2020-06-18T14:44:23Z

The read-ahead shouldn't block, so allow it to be done even if
IOCB_NOWAIT is set in the kiocb.

Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
mm/filemap.c | 2 --
1 file changed, 2 deletions(-)

diff --git a/mm/filemap.c b/mm/filemap.c
index f0ae9a6308cb..3378d4fca883 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2028,8 +2028,6 @@ ssize_t generic_file_buffered_read(struct kiocb *iocb,

page = find_get_page(mapping, index);
if (!page) {
- if (iocb->ki_flags & IOCB_NOWAIT)
- goto would_block;
page_cache_sync_readahead(mapping,
ra, filp,
index, last_index - index);
--
2.27.0