Re: [PATCH linux-block/for-linus] writeback: fix possible underflow in write bandwidth calculation

2015-03-23 Thread Jens Axboe
On 03/22/2015 10:18 PM, Tejun Heo wrote: From 1ebf33901ecc75d9496862dceb1ef0377980587c Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 23 Mar 2015 00:08:19 -0400 2f800fbd777b ("writeback: fix dirtied pages accounting on redirty") introduced account_page_redirty() which reverts stat

Re: [PATCH linux-block/for-linus] writeback: fix possible underflow in write bandwidth calculation

2015-03-23 Thread Jens Axboe
On 03/22/2015 10:18 PM, Tejun Heo wrote: From 1ebf33901ecc75d9496862dceb1ef0377980587c Mon Sep 17 00:00:00 2001 From: Tejun Heo t...@kernel.org Date: Mon, 23 Mar 2015 00:08:19 -0400 2f800fbd777b (writeback: fix dirtied pages accounting on redirty) introduced account_page_redirty() which

[PATCH linux-block/for-linus] writeback: fix possible underflow in write bandwidth calculation

2015-03-22 Thread Tejun Heo
>From 1ebf33901ecc75d9496862dceb1ef0377980587c Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 23 Mar 2015 00:08:19 -0400 2f800fbd777b ("writeback: fix dirtied pages accounting on redirty") introduced account_page_redirty() which reverts stat updates for a redirtied page, making BDI_DIRTIED

[PATCH linux-block/for-linus] writeback: fix possible underflow in write bandwidth calculation

2015-03-22 Thread Tejun Heo
From 1ebf33901ecc75d9496862dceb1ef0377980587c Mon Sep 17 00:00:00 2001 From: Tejun Heo t...@kernel.org Date: Mon, 23 Mar 2015 00:08:19 -0400 2f800fbd777b (writeback: fix dirtied pages accounting on redirty) introduced account_page_redirty() which reverts stat updates for a redirtied page, making