* [PATCH] mm/readahead.c: fix incorrect comments for get_init_ra_size
@ 2021-10-19 10:48 Lin Feng
0 siblings, 0 replies; only message in thread
From: Lin Feng @ 2021-10-19 10:48 UTC (permalink / raw)
To: akpm; +Cc: linux-mm, linux-kernel, linf
In fact, formated values returned by get_init_ra_size are not that
intuitive. This patch make the comments reflect its truth.
Signed-off-by: Lin Feng <linf@wangsu.com>
---
mm/readahead.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/readahead.c b/mm/readahead.c
index 41b75d76d36e..88a84f254ed6 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -309,7 +309,7 @@ void force_page_cache_ra(struct readahead_control *ractl,
* Set the initial window size, round to next power of 2 and square
* for small size, x 4 for medium, and x 2 for large
* for 128k (32 page) max ra
- * 1-8 page = 32k initial, > 8 page = 128k initial
+ * 1-2 page = 16k, 3-4 page 32k, 5-8 page = 64k, > 8 page = 128k initial
*/
static unsigned long get_init_ra_size(unsigned long size, unsigned long max)
{
--
2.31.1
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