From: Lin Feng <linf@wangsu.com>
To: akpm@linux-foundation.org
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linf@wangsu.com
Subject: [PATCH] mm/readahead.c: fix incorrect comments for get_init_ra_size
Date: Tue, 19 Oct 2021 18:48:12 +0800 [thread overview]
Message-ID: <20211019104812.135602-1-linf@wangsu.com> (raw)
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
reply other threads:[~2021-10-19 10:48 UTC|newest]
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