Re: [LSF/MM TOPIC] get_user_pages() and filesystems

2018-02-06 Thread Jan Kara
Hello, On Fri 02-02-18 15:04:11, Liu Bo wrote: > On Thu, Jan 25, 2018 at 12:57:27PM +0100, Jan Kara wrote: > > Hello, > > > > this is about a problem I have identified last month and for which I still > > don't have good solution. Some discussion of the problem happened here [1] > > where also te

Re: [LSF/MM TOPIC] get_user_pages() and filesystems

2018-02-02 Thread Liu Bo
Hi Jan, On Thu, Jan 25, 2018 at 12:57:27PM +0100, Jan Kara wrote: > Hello, > > this is about a problem I have identified last month and for which I still > don't have good solution. Some discussion of the problem happened here [1] > where also technical details are posted but culprit of the probl

[LSF/MM TOPIC] get_user_pages() and filesystems

2018-01-25 Thread Jan Kara
Hello, this is about a problem I have identified last month and for which I still don't have good solution. Some discussion of the problem happened here [1] where also technical details are posted but culprit of the problem is relatively simple: Lots of places in kernel (fs code, writeback logic,