* [PATCH] buffer: remove useless comment and WB_REASON_FREE_MORE_MEM, reason.
@ 2020-04-13 5:12 Zhiqiang Liu
2020-04-14 15:09 ` Jan Kara
2020-04-18 3:38 ` Jens Axboe
0 siblings, 2 replies; 4+ messages in thread
From: Zhiqiang Liu @ 2020-04-13 5:12 UTC (permalink / raw)
To: viro, rostedt, mingo, Jens Axboe, linux-kernel, linux-fsdevel
Cc: jack, tj, bigeasy, linfeilong, Yanxiaodan, Mingfangsen, renxudong
From: Zhiqiang Liu <liuzhiqiang26@huawei.com>
free_more_memory func has been completely removed in commit bc48f001de12
("buffer: eliminate the need to call free_more_memory() in __getblk_slow()")
So comment and `WB_REASON_FREE_MORE_MEM` reason about free_more_memory
are no longer needed.
Signed-off-by: Zhiqiang Liu <liuzhiqiang26@huawei.com>
---
fs/buffer.c | 2 +-
include/linux/backing-dev-defs.h | 1 -
include/trace/events/writeback.h | 1 -
3 files changed, 1 insertion(+), 3 deletions(-)
diff --git a/fs/buffer.c b/fs/buffer.c
index b8d28370cfd7..07ab0405f3f5 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -973,7 +973,7 @@ grow_dev_page(struct block_device *bdev, sector_t block,
struct page *page;
struct buffer_head *bh;
sector_t end_block;
- int ret = 0; /* Will call free_more_memory() */
+ int ret = 0;
gfp_t gfp_mask;
gfp_mask = mapping_gfp_constraint(inode->i_mapping, ~__GFP_FS) | gfp;
diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h
index 4fc87dee005a..ee577a83cfe6 100644
--- a/include/linux/backing-dev-defs.h
+++ b/include/linux/backing-dev-defs.h
@@ -54,7 +54,6 @@ enum wb_reason {
WB_REASON_SYNC,
WB_REASON_PERIODIC,
WB_REASON_LAPTOP_TIMER,
- WB_REASON_FREE_MORE_MEM,
WB_REASON_FS_FREE_SPACE,
/*
* There is no bdi forker thread any more and works are done
diff --git a/include/trace/events/writeback.h b/include/trace/events/writeback.h
index d94def25e4dc..85a33bea76f1 100644
--- a/include/trace/events/writeback.h
+++ b/include/trace/events/writeback.h
@@ -36,7 +36,6 @@
EM( WB_REASON_SYNC, "sync") \
EM( WB_REASON_PERIODIC, "periodic") \
EM( WB_REASON_LAPTOP_TIMER, "laptop_timer") \
- EM( WB_REASON_FREE_MORE_MEM, "free_more_memory") \
EM( WB_REASON_FS_FREE_SPACE, "fs_free_space") \
EMe(WB_REASON_FORKER_THREAD, "forker_thread")
--
2.19.1
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] buffer: remove useless comment and WB_REASON_FREE_MORE_MEM, reason.
2020-04-13 5:12 [PATCH] buffer: remove useless comment and WB_REASON_FREE_MORE_MEM, reason Zhiqiang Liu
@ 2020-04-14 15:09 ` Jan Kara
2020-04-18 1:01 ` Zhiqiang Liu
2020-04-18 3:38 ` Jens Axboe
1 sibling, 1 reply; 4+ messages in thread
From: Jan Kara @ 2020-04-14 15:09 UTC (permalink / raw)
To: Zhiqiang Liu
Cc: viro, rostedt, mingo, Jens Axboe, linux-kernel, linux-fsdevel,
jack, tj, bigeasy, linfeilong, Yanxiaodan, Mingfangsen,
renxudong
On Mon 13-04-20 13:12:10, Zhiqiang Liu wrote:
> From: Zhiqiang Liu <liuzhiqiang26@huawei.com>
>
> free_more_memory func has been completely removed in commit bc48f001de12
> ("buffer: eliminate the need to call free_more_memory() in __getblk_slow()")
>
> So comment and `WB_REASON_FREE_MORE_MEM` reason about free_more_memory
> are no longer needed.
>
> Signed-off-by: Zhiqiang Liu <liuzhiqiang26@huawei.com>
Thanks. The patch looks good to me. You can add:
Reviewed-by: Jan Kara <jack@suse.cz>
Honza
> ---
> fs/buffer.c | 2 +-
> include/linux/backing-dev-defs.h | 1 -
> include/trace/events/writeback.h | 1 -
> 3 files changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/fs/buffer.c b/fs/buffer.c
> index b8d28370cfd7..07ab0405f3f5 100644
> --- a/fs/buffer.c
> +++ b/fs/buffer.c
> @@ -973,7 +973,7 @@ grow_dev_page(struct block_device *bdev, sector_t block,
> struct page *page;
> struct buffer_head *bh;
> sector_t end_block;
> - int ret = 0; /* Will call free_more_memory() */
> + int ret = 0;
> gfp_t gfp_mask;
>
> gfp_mask = mapping_gfp_constraint(inode->i_mapping, ~__GFP_FS) | gfp;
> diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h
> index 4fc87dee005a..ee577a83cfe6 100644
> --- a/include/linux/backing-dev-defs.h
> +++ b/include/linux/backing-dev-defs.h
> @@ -54,7 +54,6 @@ enum wb_reason {
> WB_REASON_SYNC,
> WB_REASON_PERIODIC,
> WB_REASON_LAPTOP_TIMER,
> - WB_REASON_FREE_MORE_MEM,
> WB_REASON_FS_FREE_SPACE,
> /*
> * There is no bdi forker thread any more and works are done
> diff --git a/include/trace/events/writeback.h b/include/trace/events/writeback.h
> index d94def25e4dc..85a33bea76f1 100644
> --- a/include/trace/events/writeback.h
> +++ b/include/trace/events/writeback.h
> @@ -36,7 +36,6 @@
> EM( WB_REASON_SYNC, "sync") \
> EM( WB_REASON_PERIODIC, "periodic") \
> EM( WB_REASON_LAPTOP_TIMER, "laptop_timer") \
> - EM( WB_REASON_FREE_MORE_MEM, "free_more_memory") \
> EM( WB_REASON_FS_FREE_SPACE, "fs_free_space") \
> EMe(WB_REASON_FORKER_THREAD, "forker_thread")
>
> --
> 2.19.1
>
>
--
Jan Kara <jack@suse.com>
SUSE Labs, CR
^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] buffer: remove useless comment and WB_REASON_FREE_MORE_MEM, reason.
2020-04-14 15:09 ` Jan Kara
@ 2020-04-18 1:01 ` Zhiqiang Liu
0 siblings, 0 replies; 4+ messages in thread
From: Zhiqiang Liu @ 2020-04-18 1:01 UTC (permalink / raw)
To: Jan Kara
Cc: viro, rostedt, mingo, Jens Axboe, linux-kernel, linux-fsdevel,
tj, bigeasy, linfeilong, Yanxiaodan, Mingfangsen, renxudong
friendly ping...
On 2020/4/14 23:09, Jan Kara wrote:
> On Mon 13-04-20 13:12:10, Zhiqiang Liu wrote:
>> From: Zhiqiang Liu <liuzhiqiang26@huawei.com>
>>
>> free_more_memory func has been completely removed in commit bc48f001de12
>> ("buffer: eliminate the need to call free_more_memory() in __getblk_slow()")
>>
>> So comment and `WB_REASON_FREE_MORE_MEM` reason about free_more_memory
>> are no longer needed.
>>
>> Signed-off-by: Zhiqiang Liu <liuzhiqiang26@huawei.com>
>
> Thanks. The patch looks good to me. You can add:
>
> Reviewed-by: Jan Kara <jack@suse.cz>
>
> Honza
>
>> ---
>> fs/buffer.c | 2 +-
>> include/linux/backing-dev-defs.h | 1 -
>> include/trace/events/writeback.h | 1 -
>> 3 files changed, 1 insertion(+), 3 deletions(-)
>>
>> diff --git a/fs/buffer.c b/fs/buffer.c
>> index b8d28370cfd7..07ab0405f3f5 100644
>> --- a/fs/buffer.c
>> +++ b/fs/buffer.c
>> @@ -973,7 +973,7 @@ grow_dev_page(struct block_device *bdev, sector_t block,
>> struct page *page;
>> struct buffer_head *bh;
>> sector_t end_block;
>> - int ret = 0; /* Will call free_more_memory() */
>> + int ret = 0;
>> gfp_t gfp_mask;
>>
>> gfp_mask = mapping_gfp_constraint(inode->i_mapping, ~__GFP_FS) | gfp;
>> diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h
>> index 4fc87dee005a..ee577a83cfe6 100644
>> --- a/include/linux/backing-dev-defs.h
>> +++ b/include/linux/backing-dev-defs.h
>> @@ -54,7 +54,6 @@ enum wb_reason {
>> WB_REASON_SYNC,
>> WB_REASON_PERIODIC,
>> WB_REASON_LAPTOP_TIMER,
>> - WB_REASON_FREE_MORE_MEM,
>> WB_REASON_FS_FREE_SPACE,
>> /*
>> * There is no bdi forker thread any more and works are done
>> diff --git a/include/trace/events/writeback.h b/include/trace/events/writeback.h
>> index d94def25e4dc..85a33bea76f1 100644
>> --- a/include/trace/events/writeback.h
>> +++ b/include/trace/events/writeback.h
>> @@ -36,7 +36,6 @@
>> EM( WB_REASON_SYNC, "sync") \
>> EM( WB_REASON_PERIODIC, "periodic") \
>> EM( WB_REASON_LAPTOP_TIMER, "laptop_timer") \
>> - EM( WB_REASON_FREE_MORE_MEM, "free_more_memory") \
>> EM( WB_REASON_FS_FREE_SPACE, "fs_free_space") \
>> EMe(WB_REASON_FORKER_THREAD, "forker_thread")
>>
>> --
>> 2.19.1
>>
>>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] buffer: remove useless comment and WB_REASON_FREE_MORE_MEM, reason.
2020-04-13 5:12 [PATCH] buffer: remove useless comment and WB_REASON_FREE_MORE_MEM, reason Zhiqiang Liu
2020-04-14 15:09 ` Jan Kara
@ 2020-04-18 3:38 ` Jens Axboe
1 sibling, 0 replies; 4+ messages in thread
From: Jens Axboe @ 2020-04-18 3:38 UTC (permalink / raw)
To: Zhiqiang Liu, viro, rostedt, mingo, linux-kernel, linux-fsdevel
Cc: jack, tj, bigeasy, linfeilong, Yanxiaodan, Mingfangsen, renxudong
On 4/12/20 11:12 PM, Zhiqiang Liu wrote:
> From: Zhiqiang Liu <liuzhiqiang26@huawei.com>
>
> free_more_memory func has been completely removed in commit bc48f001de12
> ("buffer: eliminate the need to call free_more_memory() in __getblk_slow()")
>
> So comment and `WB_REASON_FREE_MORE_MEM` reason about free_more_memory
> are no longer needed.
Applied, with:
Fixes: bc48f001de12 ("buffer: eliminate the need to call free_more_memory() in __getblk_slow()")
added.
--
Jens Axboe
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2020-04-18 3:38 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2020-04-13 5:12 [PATCH] buffer: remove useless comment and WB_REASON_FREE_MORE_MEM, reason Zhiqiang Liu
2020-04-14 15:09 ` Jan Kara
2020-04-18 1:01 ` Zhiqiang Liu
2020-04-18 3:38 ` Jens Axboe
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