Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1730614
| From | Minchan Kim <minchan@kernel.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 4/5] mm:swap: respect page_cluster for readahead |
| Date | 2017-09-12 04:40 +0200 |
| Message-ID | <uoJhf-3C9-3@gated-at.bofh.it> (permalink) |
| References | <uoJhf-3C9-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
page_cluster 0 means "we don't want readahead" so in the case,
let's skip the readahead detection logic.
Cc: "Huang, Ying" <ying.huang@intel.com>
Signed-off-by: Minchan Kim <minchan@kernel.org>
---
include/linux/swap.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 0f54b491e118..739d94397c47 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -427,7 +427,8 @@ extern bool has_usable_swap(void);
static inline bool swap_use_vma_readahead(void)
{
- return READ_ONCE(swap_vma_readahead) && !atomic_read(&nr_rotate_swap);
+ return page_cluster > 0 && READ_ONCE(swap_vma_readahead)
+ && !atomic_read(&nr_rotate_swap);
}
/* Swap 50% full? Release swapcache more aggressively.. */
--
2.7.4
Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread
[PATCH 4/5] mm:swap: respect page_cluster for readahead Minchan Kim <minchan@kernel.org> - 2017-09-12 04:40 +0200
Re: [PATCH 4/5] mm:swap: respect page_cluster for readahead "Huang\, Ying" <ying.huang@intel.com> - 2017-09-12 07:30 +0200
Re: [PATCH 4/5] mm:swap: respect page_cluster for readahead Minchan Kim <minchan@kernel.org> - 2017-09-12 08:30 +0200
Re: [PATCH 4/5] mm:swap: respect page_cluster for readahead "Huang\, Ying" <ying.huang@intel.com> - 2017-09-12 08:50 +0200
Re: [PATCH 4/5] mm:swap: respect page_cluster for readahead Minchan Kim <minchan@kernel.org> - 2017-09-12 09:00 +0200
Re: [PATCH 4/5] mm:swap: respect page_cluster for readahead "Huang\, Ying" <ying.huang@intel.com> - 2017-09-12 09:30 +0200
Re: [PATCH 4/5] mm:swap: respect page_cluster for readahead Minchan Kim <minchan@kernel.org> - 2017-09-12 10:00 +0200
Re: [PATCH 4/5] mm:swap: respect page_cluster for readahead "Huang\, Ying" <ying.huang@intel.com> - 2017-09-12 10:10 +0200
Re: [PATCH 4/5] mm:swap: respect page_cluster for readahead Minchan Kim <minchan@kernel.org> - 2017-09-12 10:30 +0200
Re: [PATCH 4/5] mm:swap: respect page_cluster for readahead "Huang\, Ying" <ying.huang@intel.com> - 2017-09-12 10:40 +0200
Re: [PATCH 4/5] mm:swap: respect page_cluster for readahead Minchan Kim <minchan@kernel.org> - 2017-09-13 01:40 +0200
Re: [PATCH 4/5] mm:swap: respect page_cluster for readahead "Huang\, Ying" <ying.huang@intel.com> - 2017-09-13 03:00 +0200
csiph-web