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* [PATCH] ext4: Delete redundant uptodate check for buffer
@ 2021-04-01  7:03 Shaokun Zhang
  2021-04-01 11:20 ` Ritesh Harjani
  0 siblings, 1 reply; 3+ messages in thread
From: Shaokun Zhang @ 2021-04-01  7:03 UTC (permalink / raw)
  To: linux-ext4, linux-kernel
  Cc: Yang Guo, Theodore Ts'o, Andreas Dilger, Shaokun Zhang

From: Yang Guo <guoyang2@huawei.com>

The buffer uptodate state has been checked in function set_buffer_uptodate,
there is no need use buffer_uptodate before calling set_buffer_uptodate and
delete it.

Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Signed-off-by: Yang Guo <guoyang2@huawei.com>
Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
---
 fs/ext4/inode.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 0948a43f1b3d..32fa3ad38797 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1066,8 +1066,7 @@ static int ext4_block_write_begin(struct page *page, loff_t pos, unsigned len,
 		block_end = block_start + blocksize;
 		if (block_end <= from || block_start >= to) {
 			if (PageUptodate(page)) {
-				if (!buffer_uptodate(bh))
-					set_buffer_uptodate(bh);
+				set_buffer_uptodate(bh);
 			}
 			continue;
 		}
@@ -1092,8 +1091,7 @@ static int ext4_block_write_begin(struct page *page, loff_t pos, unsigned len,
 			}
 		}
 		if (PageUptodate(page)) {
-			if (!buffer_uptodate(bh))
-				set_buffer_uptodate(bh);
+			set_buffer_uptodate(bh);
 			continue;
 		}
 		if (!buffer_uptodate(bh) && !buffer_delay(bh) &&
-- 
2.7.4


^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [PATCH] ext4: Delete redundant uptodate check for buffer
  2021-04-01  7:03 [PATCH] ext4: Delete redundant uptodate check for buffer Shaokun Zhang
@ 2021-04-01 11:20 ` Ritesh Harjani
  2021-04-09 16:55   ` Theodore Ts'o
  0 siblings, 1 reply; 3+ messages in thread
From: Ritesh Harjani @ 2021-04-01 11:20 UTC (permalink / raw)
  To: Shaokun Zhang
  Cc: linux-ext4, linux-kernel, Yang Guo, Theodore Ts'o,
	Andreas Dilger, Ritesh Harjani

On 21/04/01 03:03PM, Shaokun Zhang wrote:
> From: Yang Guo <guoyang2@huawei.com>
>
> The buffer uptodate state has been checked in function set_buffer_uptodate,
> there is no need use buffer_uptodate before calling set_buffer_uptodate and
> delete it.
>
> Cc: "Theodore Ts'o" <tytso@mit.edu>
> Cc: Andreas Dilger <adilger.kernel@dilger.ca>
> Signed-off-by: Yang Guo <guoyang2@huawei.com>
> Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
> ---
>  fs/ext4/inode.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)

Thanks for the patch. Changes looks good and trivial.

Feel free to add -
Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com>

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [PATCH] ext4: Delete redundant uptodate check for buffer
  2021-04-01 11:20 ` Ritesh Harjani
@ 2021-04-09 16:55   ` Theodore Ts'o
  0 siblings, 0 replies; 3+ messages in thread
From: Theodore Ts'o @ 2021-04-09 16:55 UTC (permalink / raw)
  To: Ritesh Harjani
  Cc: Shaokun Zhang, linux-ext4, linux-kernel, Yang Guo, Andreas Dilger

On Thu, Apr 01, 2021 at 04:50:01PM +0530, Ritesh Harjani wrote:
> On 21/04/01 03:03PM, Shaokun Zhang wrote:
> > From: Yang Guo <guoyang2@huawei.com>
> >
> > The buffer uptodate state has been checked in function set_buffer_uptodate,
> > there is no need use buffer_uptodate before calling set_buffer_uptodate and
> > delete it.
> >
> > Cc: "Theodore Ts'o" <tytso@mit.edu>
> > Cc: Andreas Dilger <adilger.kernel@dilger.ca>
> > Signed-off-by: Yang Guo <guoyang2@huawei.com>
> > Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
> > ---
> >  fs/ext4/inode.c | 6 ++----
> >  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> Thanks for the patch. Changes looks good and trivial.
> 
> Feel free to add -
> Reviewed-by: Ritesh Harjani <ritesh.list@gmail.com>

Thanks, applied.

					- Ted

^ permalink raw reply	[flat|nested] 3+ messages in thread

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2021-04-01  7:03 [PATCH] ext4: Delete redundant uptodate check for buffer Shaokun Zhang
2021-04-01 11:20 ` Ritesh Harjani
2021-04-09 16:55   ` Theodore Ts'o

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