page_cache_next_miss() should return value outside of the specified
range when no hole is found. However currently it will return the last
index *in* the specified range confusing ondemand_readahead() to think
there's a hole in the searched range and upsetting readahead logic.
Signed-off-by: Jan Kara <jack@xxxxxxx>
---
mm/filemap.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/mm/filemap.c b/mm/filemap.c
index 876cc64aadd7..015efc261468 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1752,12 +1752,12 @@ pgoff_t page_cache_next_miss(struct address_space *mapping,
while (max_scan--) {
void *entry = xas_next(&xas);
if (!entry || xa_is_value(entry))
- break;
+ return xas.xa_index;
if (xas.xa_index == 0)
- break;
+ return 0;
}
- return xas.xa_index;
+ return index + max_scan;
}
EXPORT_SYMBOL(page_cache_next_miss);
--
2.35.3
