* [PATCH] ext4: init pagevec in ext4_da_block_invalidatepages
@ 2012-11-11 21:33 Eric Sandeen
2012-11-11 21:50 ` [PATCH V2] " Eric Sandeen
0 siblings, 1 reply; 5+ messages in thread
From: Eric Sandeen @ 2012-11-11 21:33 UTC (permalink / raw)
To: ext4 development; +Cc: stable
ext4_da_block_invalidatepages is missing a pagevec_init(),
which means that pvec->cold contains random garbage.
This affects whether the page goes to the front or
back of the LRU when ->cold makes it to
free_hot_cold_page()
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
---
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index b3c243b..f89c0e5 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1503,6 +1503,8 @@ static void ext4_da_block_invalidatepages(struct mpage_da_data *mpd)
index = mpd->first_page;
end = mpd->next_page - 1;
+
+ pagevec_init(&pvec, 0);
while (index <= end) {
nr_pages = pagevec_lookup(&pvec, mapping, index, PAGEVEC_SIZE);
if (nr_pages == 0)
^ permalink raw reply related [flat|nested] 5+ messages in thread* [PATCH V2] ext4: init pagevec in ext4_da_block_invalidatepages
2012-11-11 21:33 [PATCH] ext4: init pagevec in ext4_da_block_invalidatepages Eric Sandeen
@ 2012-11-11 21:50 ` Eric Sandeen
2012-11-12 7:35 ` Lukáš Czerner
` (2 more replies)
0 siblings, 3 replies; 5+ messages in thread
From: Eric Sandeen @ 2012-11-11 21:50 UTC (permalink / raw)
To: ext4 development
ext4_da_block_invalidatepages is missing a pagevec_init(),
which means that pvec->cold contains random garbage.
This affects whether the page goes to the front or
back of the LRU when ->cold makes it to
free_hot_cold_page()
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Cc: stable@vger.kernel.org
---
(resend w/ stable in S-O-B area rather than fat-fingered
in email cc :/ )
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index b3c243b..f89c0e5 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1503,6 +1503,8 @@ static void ext4_da_block_invalidatepages(struct mpage_da_data *mpd)
index = mpd->first_page;
end = mpd->next_page - 1;
+
+ pagevec_init(&pvec, 0);
while (index <= end) {
nr_pages = pagevec_lookup(&pvec, mapping, index, PAGEVEC_SIZE);
if (nr_pages == 0)
--
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^ permalink raw reply related [flat|nested] 5+ messages in thread* Re: [PATCH V2] ext4: init pagevec in ext4_da_block_invalidatepages
2012-11-11 21:50 ` [PATCH V2] " Eric Sandeen
@ 2012-11-12 7:35 ` Lukáš Czerner
2012-11-12 14:12 ` Carlos Maiolino
2012-11-13 5:14 ` Theodore Ts'o
2 siblings, 0 replies; 5+ messages in thread
From: Lukáš Czerner @ 2012-11-12 7:35 UTC (permalink / raw)
To: Eric Sandeen; +Cc: ext4 development
On Sun, 11 Nov 2012, Eric Sandeen wrote:
> Date: Sun, 11 Nov 2012 15:50:37 -0600
> From: Eric Sandeen <sandeen@redhat.com>
> To: ext4 development <linux-ext4@vger.kernel.org>
> Subject: [PATCH V2] ext4: init pagevec in ext4_da_block_invalidatepages
>
> ext4_da_block_invalidatepages is missing a pagevec_init(),
> which means that pvec->cold contains random garbage.
>
> This affects whether the page goes to the front or
> back of the LRU when ->cold makes it to
> free_hot_cold_page()
Looks good.
Reviewed-by: Lukas Czerner <lczerner@redhat.com>
>
> Signed-off-by: Eric Sandeen <sandeen@redhat.com>
> Cc: stable@vger.kernel.org
> ---
>
> (resend w/ stable in S-O-B area rather than fat-fingered
> in email cc :/ )
>
> diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
> index b3c243b..f89c0e5 100644
> --- a/fs/ext4/inode.c
> +++ b/fs/ext4/inode.c
> @@ -1503,6 +1503,8 @@ static void ext4_da_block_invalidatepages(struct mpage_da_data *mpd)
>
> index = mpd->first_page;
> end = mpd->next_page - 1;
> +
> + pagevec_init(&pvec, 0);
> while (index <= end) {
> nr_pages = pagevec_lookup(&pvec, mapping, index, PAGEVEC_SIZE);
> if (nr_pages == 0)
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH V2] ext4: init pagevec in ext4_da_block_invalidatepages
2012-11-11 21:50 ` [PATCH V2] " Eric Sandeen
2012-11-12 7:35 ` Lukáš Czerner
@ 2012-11-12 14:12 ` Carlos Maiolino
2012-11-13 5:14 ` Theodore Ts'o
2 siblings, 0 replies; 5+ messages in thread
From: Carlos Maiolino @ 2012-11-12 14:12 UTC (permalink / raw)
To: Eric Sandeen; +Cc: ext4 development
On Sun, Nov 11, 2012 at 03:50:37PM -0600, Eric Sandeen wrote:
> ext4_da_block_invalidatepages is missing a pagevec_init(),
> which means that pvec->cold contains random garbage.
>
> This affects whether the page goes to the front or
> back of the LRU when ->cold makes it to
> free_hot_cold_page()
>
> Signed-off-by: Eric Sandeen <sandeen@redhat.com>
> Cc: stable@vger.kernel.org
> ---
>
> (resend w/ stable in S-O-B area rather than fat-fingered
> in email cc :/ )
>
> diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
> index b3c243b..f89c0e5 100644
> --- a/fs/ext4/inode.c
> +++ b/fs/ext4/inode.c
> @@ -1503,6 +1503,8 @@ static void ext4_da_block_invalidatepages(struct mpage_da_data *mpd)
>
> index = mpd->first_page;
> end = mpd->next_page - 1;
> +
> + pagevec_init(&pvec, 0);
> while (index <= end) {
> nr_pages = pagevec_lookup(&pvec, mapping, index, PAGEVEC_SIZE);
> if (nr_pages == 0)
>
Looks Good,
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
--
Carlos
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH V2] ext4: init pagevec in ext4_da_block_invalidatepages
2012-11-11 21:50 ` [PATCH V2] " Eric Sandeen
2012-11-12 7:35 ` Lukáš Czerner
2012-11-12 14:12 ` Carlos Maiolino
@ 2012-11-13 5:14 ` Theodore Ts'o
2 siblings, 0 replies; 5+ messages in thread
From: Theodore Ts'o @ 2012-11-13 5:14 UTC (permalink / raw)
To: Eric Sandeen; +Cc: ext4 development
On Sun, Nov 11, 2012 at 03:50:37PM -0600, Eric Sandeen wrote:
> ext4_da_block_invalidatepages is missing a pagevec_init(),
> which means that pvec->cold contains random garbage.
>
> This affects whether the page goes to the front or
> back of the LRU when ->cold makes it to
> free_hot_cold_page()
>
> Signed-off-by: Eric Sandeen <sandeen@redhat.com>
> Cc: stable@vger.kernel.org
Applied, thanks.
- Ted
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2012-11-13 5:15 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
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2012-11-11 21:33 [PATCH] ext4: init pagevec in ext4_da_block_invalidatepages Eric Sandeen
2012-11-11 21:50 ` [PATCH V2] " Eric Sandeen
2012-11-12 7:35 ` Lukáš Czerner
2012-11-12 14:12 ` Carlos Maiolino
2012-11-13 5:14 ` Theodore Ts'o
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