From: "Matthew Wilcox (Oracle)"
Implement the new readahead aop and convert all callers (block_dev,
exfat, ext2, fat, gfs2, hpfs, isofs, jfs, nilfs2, ocfs2, omfs, qnx6,
reiserfs & udf). The callers are all trivial except for GFS2 & OCFS2.
Signed-off-by: Matthew Wilcox (Ora
From: "Matthew Wilcox (Oracle)"
ra_submit() which is a wrapper around __do_page_cache_readahead() already
returns an unsigned long, and the 'nr_to_read' parameter is an unsigned
long, so fix __do_page_cache_readahead() to return an unsigned long,
even though I'm prett
From: "Matthew Wilcox (Oracle)"
We used to assign the return value to a variable, which we then ignored.
Remove the pretence of caring.
Signed-off-by: Matthew Wilcox (Oracle)
---
mm/readahead.c | 8 ++--
1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/mm/readah
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in erofs
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/erofs/data.c | 39 +---
fs/erofs/zdata.c | 2 +-
include/trace/events/erofs.h | 6 +++---
3 files c
From: "Matthew Wilcox (Oracle)"
At allocation time, put the pages in the cache unless we're using
->readpages.
Signed-off-by: Matthew Wilcox (Oracle)
---
mm/readahead.c | 66 --
1 file changed, 42 insertions(+), 24 deletions(-
On Tue, Feb 04, 2020 at 04:32:27PM +0100, David Sterba wrote:
> On Sat, Feb 01, 2020 at 07:12:28AM -0800, Matthew Wilcox wrote:
> > From: "Matthew Wilcox (Oracle)"
> >
> > I would particularly value feedback on this from the gfs2 and ocfs2
> > maintainers.
From: "Matthew Wilcox (Oracle)"
This replaces ->readpages with a saner interface:
- Return the number of pages not read instead of an ignored error code.
- Pages are already in the page cache when ->readahead is called.
- Implementation looks up the pages in the page
From: "Matthew Wilcox (Oracle)"
Implement the new readahead aop and convert all callers (block_dev,
exfat, ext2, fat, gfs2, hpfs, isofs, jfs, nilfs2, ocfs2, omfs, qnx6,
reiserfs & udf). The callers are all trivial except for GFS2 & OCFS2.
Signed-off-by: Matthew Wilcox (Or
From: "Matthew Wilcox (Oracle)"
I would particularly value feedback on this from the gfs2 and ocfs2
maintainers. They have non-trivial changes, and a review on patch 5
would be greatly appreciated.
This series adds a readahead address_space operation to eventually
replace the
From: "Matthew Wilcox (Oracle)"
At allocation time, put the pages in the cache unless we're using
->readpages.
Signed-off-by: Matthew Wilcox (Oracle)
Cc: linux-bt...@vger.kernel.org
Cc: linux-er...@lists.ozlabs.org
Cc: linux-e...@vger.kernel.org
Cc: linux-f2fs-de...@lists.
On Fri, Jan 24, 2020 at 07:57:40PM -0800, Randy Dunlap wrote:
> > +``readahead``
> > + called by the VM to read pages associated with the address_space
> > + object. The pages are consecutive in the page cache and are
> > +locked. The implementation should decrement the page refcount
On Wed, Jan 29, 2020 at 11:24:56AM +1100, Dave Chinner wrote:
> On Fri, Jan 24, 2020 at 05:35:45PM -0800, Matthew Wilcox wrote:
> > From: "Matthew Wilcox (Oracle)"
> >
> > This replaces ->readpages with a saner interface:
> > - Return the number of pa
On Fri, Jan 24, 2020 at 05:35:44PM -0800, Matthew Wilcox wrote:
> @@ -192,8 +194,18 @@ unsigned long __do_page_cache_readahead(struct
> address_space *mapping,
> page = __page_cache_alloc(gfp_mask);
> if (!page)
> break;
>
From: "Matthew Wilcox (Oracle)"
Implement the new readahead aop and convert all callers (block_dev,
exfat, ext2, fat, gfs2, hpfs, isofs, jfs, nilfs2, ocfs2, omfs, qnx6,
reiserfs & udf). The callers are all trivial except for GFS2 & OCFS2.
Signed-off-by: Matthew Wilcox (Or
From: "Matthew Wilcox (Oracle)"
At allocation time, put the pages in the cache unless we're using
->readpages.
Signed-off-by: Matthew Wilcox (Oracle)
Cc: linux-bt...@vger.kernel.org
Cc: linux-er...@lists.ozlabs.org
Cc: linux-e...@vger.kernel.org
Cc: linux-f2fs-de...@lists.
From: "Matthew Wilcox (Oracle)"
This replaces ->readpages with a saner interface:
- Return the number of pages not read instead of an ignored error code.
- Pages are already in the page cache when ->readahead is called.
- Implementation looks up the pages in the page
From: "Matthew Wilcox (Oracle)"
This series adds a readahead address_space operation to eventually
replace the readpages operation. The key difference is that
pages are added to the page cache as they are allocated (and
then looked up by the filesystem) instead of passing them on a
l
On Wed, Jan 15, 2020 at 03:33:47PM +0100, Peter Zijlstra wrote:
> On Wed, Jan 15, 2020 at 09:24:28AM -0400, Jason Gunthorpe wrote:
>
> > I was interested because you are talking about allowing the read/write side
> > of a rw sem to be held across a return to user space/etc, which is the
> > same b
On Tue, Jan 14, 2020 at 05:12:13PM +0100, Christoph Hellwig wrote:
> Second I/O
> completions often come from interrupt context, which means the re-acquire
> is recorded as from irq context, leading to warnings about incorrect
> contexts. I wonder if we could just have a bit in lockdep that says
>
On Thu, Apr 25, 2019 at 05:26:30PM +0200, Andreas Gruenbacher wrote:
This seems to be corrupted; there's no declaration of a page_ops in
iomap_write_begin ... unless you're basing on a patch I don't have?
> diff --git a/fs/iomap.c b/fs/iomap.c
> index 97cb9d486a7d..967c985c5310 100644
> --- a/fs/
On Thu, Mar 21, 2019 at 05:26:44PM +, Andrew Price wrote:
> Take a function pointer 'select_root' in vfs_get_block_super() to allow
> callers to select the root dentry based on the context.
Can't this be a fs_context_operations pointer?
On Wed, Jul 26, 2017 at 01:55:36PM -0400, Jeff Layton wrote:
> +int file_write_and_wait(struct file *file)
> +{
> + int err = 0, err2;
> + struct address_space *mapping = file->f_mapping;
> +
> + if ((!dax_mapping(mapping) && mapping->nrpages) ||
> + (dax_mapping(mapping) && map
On Wed, Jul 26, 2017 at 01:55:38PM -0400, Jeff Layton wrote:
> @@ -668,12 +668,14 @@ static int gfs2_fsync(struct file *file, loff_t start,
> loff_t end,
> if (ret)
> return ret;
> if (gfs2_is_jdata(ip))
> - filemap_write_and_wa
On Tue, May 09, 2017 at 11:49:16AM -0400, Jeff Layton wrote:
> +++ b/lib/errseq.c
> @@ -0,0 +1,199 @@
> +#include
> +#include
> +#include
> +#include
> +
> +/*
> + * An errseq_t is a way of recording errors in one place, and allowing any
> + * number of "subscribers" to tell whether it has chan
e buffers. That
> will be sufficient for this case, and help other callers detect
> these errors properly as well.
>
> With that, we don't need to twiddle it in ext2.
>
> Suggested-by: Jan Kara
> Signed-off-by: Jeff Layton
> Reviewed-by: Christoph Hellwig
> Reviewed-by: Jan Kara
Reviewed-by: Matthew Wilcox
On Mon, Feb 06, 2017 at 03:07:16PM +0100, Michal Hocko wrote:
> +++ b/fs/xfs/xfs_buf.c
> @@ -442,17 +442,17 @@ _xfs_buf_map_pages(
> bp->b_addr = NULL;
> } else {
> int retried = 0;
> - unsigned noio_flag;
> + unsigned nofs_flag;
>
>
On Mon, Feb 06, 2017 at 03:34:50PM +0100, Michal Hocko wrote:
> This part is not needed for the patch, strictly speaking but I wanted to
> make the code more future proof.
Understood. I took an extra bit myself for marking the radix tree as
being used for an IDR (so the radix tree now uses 4 bits
On Mon, Feb 06, 2017 at 03:07:13PM +0100, Michal Hocko wrote:
> While we are at it also make sure that the radix tree doesn't
> accidentaly override tags stored in the upper part of the gfp_mask.
> diff --git a/lib/radix-tree.c b/lib/radix-tree.c
> index 9dc093d5ef39..7550be09f9d6 100644
> --- a/l
On Fri, Feb 03, 2017 at 04:46:40PM +0100, Jan Kara wrote:
> On Fri 03-02-17 07:13:59, Matthew Wilcox wrote:
> > On Fri, Feb 03, 2017 at 04:07:29PM +0100, Jan Kara wrote:
> > > Some ->page_mkwrite handlers may return VM_FAULT_RETRY as its return
> > > code (GFS2 or
On Fri, Feb 03, 2017 at 04:07:29PM +0100, Jan Kara wrote:
> Some ->page_mkwrite handlers may return VM_FAULT_RETRY as its return
> code (GFS2 or Lustre can definitely do this). However VM_FAULT_RETRY
> from ->page_mkwrite is completely unhandled by the mm code and results
> in locking and writeably
s_delalloc_reserve_space(inode, PAGE_CACHE_SIZE);
Does the compiler not warn that you're assigning void to 'ret'? Or was
there some other SNAFU sending these patches?
--
Matthew Wilcox Intel Open Source Technology Centre
"Bill, look, we understand that you
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