On 12/02/11 08:22, ext Chuanxiao Dong wrote:
max_discard_sectors value is UINT_MAX which means kernel block layer can pass
down unlimited sectors to MMC driver to erase. But erasing so many sectors may
delay some other important I/O requests. This is not preferred.
So use 'pref_erase' to set a s
On Monday 14 February 2011, Dong, Chuanxiao wrote:
> When I do trim with a 32GB eMMC card in my platform, sometimes I can get the
> 10s
> timeout errors but sometimes not. I am not much clear about the "discarding
> partial
> AU will take a lot longer". If this action is hide for driver, then I t
ject: Re: [PATCH v4 1/3]mmc: set max_discard_sectors value for mmc queue
>
> On Saturday 12 February 2011 11:42:51 Dong, Chuanxiao wrote:
> > > From: Arnd Bergmann [mailto:a...@arndb.de]
> > > On Saturday 12 February 2011 07:22:14 Chuanxiao Dong wrote:
> > > >
On Saturday 12 February 2011 11:42:51 Dong, Chuanxiao wrote:
> > From: Arnd Bergmann [mailto:a...@arndb.de]
> > On Saturday 12 February 2011 07:22:14 Chuanxiao Dong wrote:
> > > max_discard_sectors value is UINT_MAX which means kernel block layer can
> > > pass
> > > down unlimited sectors to MMC
ubject: Re: [PATCH v4 1/3]mmc: set max_discard_sectors value for mmc queue
>
> On Saturday 12 February 2011 07:22:14 Chuanxiao Dong wrote:
> > max_discard_sectors value is UINT_MAX which means kernel block layer can
> > pass
> > down unlimited sectors to MMC driver t
On Saturday 12 February 2011 07:22:14 Chuanxiao Dong wrote:
> max_discard_sectors value is UINT_MAX which means kernel block layer can pass
> down unlimited sectors to MMC driver to erase. But erasing so many sectors may
> delay some other important I/O requests. This is not preferred.
>
> So use
