On Wed, Feb 19, 2020 at 05:40:05PM +1100, Dave Chinner wrote:
> Ok, that's what the ctx.cur_page_in_bio check is used to detect i.e.
> if we've got a page that the readahead cursor points at, and we
> haven't actually added it to a bio, then we can leave it to the
> read_pages() to unlock and clean
On Tue, Feb 18, 2020 at 10:04:15PM -0800, Matthew Wilcox wrote:
> On Wed, Feb 19, 2020 at 02:29:00PM +1100, Dave Chinner wrote:
> > On Mon, Feb 17, 2020 at 10:46:11AM -0800, Matthew Wilcox wrote:
> > > @@ -418,6 +412,15 @@ iomap_readpages_actor(struct inode *inode, loff_t
> > > pos, loff_t length,
On Wed, Feb 19, 2020 at 02:29:00PM +1100, Dave Chinner wrote:
> On Mon, Feb 17, 2020 at 10:46:11AM -0800, Matthew Wilcox wrote:
> > @@ -418,6 +412,15 @@ iomap_readpages_actor(struct inode *inode, loff_t pos,
> > loff_t length,
> > }
> > ret = iomap_readpage_actor(inode, pos
On Tue, Feb 18, 2020 at 07:17:18PM -0800, John Hubbard wrote:
> > - for (done = 0; done < length; done += ret) {
>
> nit: this "for" loop was perfect just the way it was. :) I'd vote here for
> reverting
> the change to a "while" loop. Because with this change, now the code has to
> separately
On Mon, Feb 17, 2020 at 10:46:11AM -0800, Matthew Wilcox wrote:
> From: "Matthew Wilcox (Oracle)"
>
> By putting the 'have we reached the end of the page' condition at the end
> of the loop instead of the beginning, we can remove the 'submit the last
> page' code from iomap_readpages(). Also che
On 2/17/20 10:46 AM, Matthew Wilcox wrote:
> From: "Matthew Wilcox (Oracle)"
>
> By putting the 'have we reached the end of the page' condition at the end
> of the loop instead of the beginning, we can remove the 'submit the last
> page' code from iomap_readpages(). Also check that iomap_readpag
From: "Matthew Wilcox (Oracle)"
By putting the 'have we reached the end of the page' condition at the end
of the loop instead of the beginning, we can remove the 'submit the last
page' code from iomap_readpages(). Also check that iomap_readpage_actor()
didn't return 0, which would lead to an end
