Re: [RFC] synchronous readpage for buffer_heads

2020-10-23 Thread Matthew Wilcox
On Fri, Oct 23, 2020 at 08:22:07AM +0200, Hannes Reinecke wrote: > On 10/22/20 5:22 PM, Matthew Wilcox wrote: > Hmm. You are aware, of course, that hch et al are working on replacing bhs > with iomap, right? $ git shortlog --author=Wilcox origin/master -- fs/iomap |head -1 Matthew Wilcox (Oracle)

Re: [RFC] synchronous readpage for buffer_heads

2020-10-23 Thread Hannes Reinecke
On 10/22/20 5:22 PM, Matthew Wilcox wrote: I'm working on making readpage synchronous so that it can actually return errors instead of futilely setting PageError. Something that's common between most of the block based filesystems is the need to submit N I/Os and wait for them to all complete

[RFC] synchronous readpage for buffer_heads

2020-10-22 Thread Matthew Wilcox
I'm working on making readpage synchronous so that it can actually return errors instead of futilely setting PageError. Something that's common between most of the block based filesystems is the need to submit N I/Os and wait for them to all complete (some filesystems don't support sub-page block