On Tue, Feb 26, 2019 at 01:58:08AM +0800, Gao Xiang wrote:
> +/**
> + * xa_tag_pointer() - Create an XArray entry for a tagged pointer.
> + * @p: Plain pointer.
> + * @tag: Tag value (0, 1 or 3).
> + *
> + * If the user of the XArray prefers, they can tag their pointers instead
> + * of storing
On Mon, Feb 25, 2019 at 04:04:49PM +0100, Greg Kroah-Hartman wrote:
> On Wed, Feb 20, 2019 at 05:18:48PM +0800, Gao Xiang wrote:
> > commit 51232df5e4b268936beccde5248f312a316800be upstream.
> > Updates:
> > include/linux/xarray.h:
> > add
On Mon, Feb 25, 2019 at 04:52:43PM +0100, Greg Kroah-Hartman wrote:
> On Mon, Feb 25, 2019 at 07:25:48AM -0800, Matthew Wilcox wrote:
> > Putting in all of 3159f943aafdbacb2f94c38fdaadabf2bbde2a14 would be a
> > bad idea; it actually ended up breaking m68k in a rather unexpecte
On Mon, Mar 18, 2019 at 09:59:19AM +0800, Gao Xiang wrote:
> ping?
>
> Hi Greg,
> I have no idea of this patch since Matthew makes no response after
> modification... And this series is still not backported to 4.19 till now...
>
> What should I do next? Can this series be accepted for
On Sun, Aug 18, 2019 at 11:21:11AM +0800, Gao Xiang wrote:
> + if (dentry_page == ERR_PTR(-ENOMEM)) {
> + errln("no memory to readdir of logical block %u of nid
> %llu",
> + i, EROFS_V(dir)->nid);
I don't think you need the error message.
On Sun, Aug 18, 2019 at 09:56:31AM +0800, Gao Xiang wrote:
> @@ -82,8 +82,12 @@ static int erofs_readdir(struct file *f, struct
> dir_context *ctx)
> unsigned int nameoff, maxsize;
>
> dentry_page = read_mapping_page(mapping, i, NULL);
> - if
On Sun, Aug 18, 2019 at 10:32:45AM +0800, Gao Xiang wrote:
> On Sat, Aug 17, 2019 at 07:20:55PM -0700, Matthew Wilcox wrote:
> > On Sun, Aug 18, 2019 at 09:56:31AM +0800, Gao Xiang wrote:
> > > @@ -82,8 +82,12 @@ static int erofs_readdir(struct file *f, struct
>
On Wed, Aug 07, 2019 at 10:49:36PM -0700, Eric Biggers wrote:
> On Thu, Aug 08, 2019 at 12:26:42PM +0800, Gao Xiang wrote:
> > 1. decrypt->verity->decompress
> >
> > 2. verity->decompress->decrypt
> >
> > 3. decompress->decrypt->verity
> >
> >1. and 2. could cause less
On Thu, Nov 14, 2019 at 10:10:03PM +0300, Dan Carpenter wrote:
> fs/erofs/zdata.c:443 z_erofs_register_collection()
> error: double unlocked 'cl->lock' (orig line 439)
>
> fs/erofs/zdata.c
>432 cl = z_erofs_primarycollection(pcl);
>433 cl->pageofs = map->m_la
On Wed, Feb 12, 2020 at 08:38:52PM -0800, Andrew Morton wrote:
> On Fri, 24 Jan 2020 17:35:41 -0800 Matthew Wilcox wrote:
>
> > From: "Matthew Wilcox (Oracle)"
> >
> > This series adds a readahead address_space operation to eventually
> > replace the
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 pretty sure we're
From: "Matthew Wilcox (Oracle)"
ext4 and f2fs have duplicated the guts of the readahead code so
they can read past i_size. Instead, separate out the guts of the
readahead code so they can call it directly.
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/ext4/verity.c
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in f2fs
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/f2fs/data.c | 50 +++--
fs/f2fs/f2fs.h | 5 ++--
include/trace/events/f2fs.h | 6 ++---
3 files c
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)"
Use the new readahead operation in btrfs. Add a
readahead_for_each_batch() iterator to optimise the loop in the XArray.
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/btrfs/extent_io.c| 48 ++---
fs/btrfs/e
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)"
Use the new readahead operation in ext4
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/ext4/ext4.h | 3 +--
fs/ext4/inode.c| 23 ++-
fs/ext4/readpage.c | 22 --
3 files changed, 19 insertions(+), 29
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(-)
di
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in iomap. Convert XFS and ZoneFS to
use it.
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/iomap/buffered-io.c | 101 -
fs/iomap/trace.h | 2 +-
fs/xfs/xfs_aops.c
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in erofs.
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/erofs/zdata.c | 29 +
1 file changed, 9 insertions(+), 20 deletions(-)
diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c
index 17
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
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in f2fs
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/f2fs/data.c | 47 +++--
include/trace/events/f2fs.h | 6 ++---
2 files changed, 22 insertions(+), 31 deletions(-)
From: "Matthew Wilcox (Oracle)"
Implement the new readahead method in btrfs. Add a readahead_page_batch()
to optimise fetching a batch of pages at once.
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/btrfs/extent_io.c | 46 ++--
fs/btrfs/e
From: "Matthew Wilcox (Oracle)"
Change the type of page_idx to unsigned long, and rename it -- it's
just a loop counter, not a page index.
Suggested-by: John Hubbard
Signed-off-by: Matthew Wilcox (Oracle)
Reviewed-by: Dave Chinner
---
mm/readahead.c | 8
1 file
From: "Matthew Wilcox (Oracle)"
This replaces ->readpages with a saner interface:
- Return void instead of an ignored error code.
- Page cache is already populated with locked pages when ->readahead
is called.
- New arguments can be passed to the implementation without
From: "Matthew Wilcox (Oracle)"
ondemand_readahead has two callers, neither of which use the return value.
That means that both ra_submit and __do_page_cache_readahead() can return
void, and we don't need to worry that a present page in the readahead
window causes us to return a smalle
From: "Matthew Wilcox (Oracle)"
This function now only uses the mapping argument to look up the inode,
and both callers already have the inode, so just pass the inode instead
of the mapping.
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/ext4/ext4.h | 2 +-
fs/ext4/inode.c|
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in iomap. Convert XFS and ZoneFS to
use it.
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/iomap/buffered-io.c | 90 +++---
fs/iomap/trace.h | 2 +-
fs/xfs/xfs_aops.c
From: "Matthew Wilcox (Oracle)"
This function now only uses the mapping argument to look up the inode,
and both callers already have the inode, so just pass the inode instead
of the mapping.
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/f2fs/data.c | 7 +++
1 file changed, 3
From: "Matthew Wilcox (Oracle)"
ext4 and f2fs have duplicated the guts of the readahead code so
they can read past i_size. Instead, separate out the guts of the
readahead code so they can call it directly.
Signed-off-by: Matthew Wilcox (Oracle)
Reviewed-by: Christoph Hellwig
--
From: "Matthew Wilcox (Oracle)"
By reducing nr_to_read, we can eliminate this check from inside the loop.
Signed-off-by: Matthew Wilcox (Oracle)
Reviewed-by: John Hubbard
---
mm/readahead.c | 17 +++--
1 file changed, 11 insertions(+), 6 deletions(-)
diff --git a/mm/r
From: "Matthew Wilcox (Oracle)"
When populating the page cache for readahead, mappings that use
->readpages must populate the page cache themselves as the pages are
passed on a linked list which would normally be used for the page cache's
LRU. For mappings that use ->readpage
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in ext4
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/ext4/ext4.h | 3 +--
fs/ext4/inode.c| 21 +
fs/ext4/readpage.c | 22 --
3 files changed, 18 insertions(+), 28
From: "Matthew Wilcox (Oracle)"
Ensure that memory allocations in the readahead path do not attempt to
reclaim file-backed pages, which could lead to a deadlock. It is
possible, though unlikely this is the root cause of a problem observed
by Cong Wang.
Signed-off-by: Matthew Wilc
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
From: "Matthew Wilcox (Oracle)"
Simplify the callers by moving the check for nr_pages and the BUG_ON
into read_pages().
Signed-off-by: Matthew Wilcox (Oracle)
Reviewed-by: Zi Yan
Reviewed-by: John Hubbard
Reviewed-by: Christoph Hellwig
---
mm/readahead.c | 12 +++-
1 fi
From: "Matthew Wilcox (Oracle)"
Filesystems which implement the upcoming ->readahead method will get
their pages by calling readahead_page() or readahead_page_batch().
These functions support large pages, even though none of the filesystems
to be converted do yet.
Signed-off-by: M
From: "Matthew Wilcox (Oracle)"
The readahead code is part of the page cache so should be found in the
pagemap.h file. force_page_cache_readahead is only used within mm,
so move it to mm/internal.h instead. Remove the parameter names where
they add no value, and rename the ones
From: "Matthew Wilcox (Oracle)"
This series adds a readahead address_space operation to 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 list to the
From: "Matthew Wilcox (Oracle)"
In this patch, only between __do_page_cache_readahead() and read_pages(),
but it will be extended in upcoming patches. The read_pages() function
becomes aops centric, as this makes the most sense by the end of the
patchset.
Signed-off-by: Matthew Wilc
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in fuse. Switching away from the
read_cache_pages() helper gets rid of an implicit call to put_page(),
so we can get rid of the get_page() call in fuse_readpages_fill().
Signed-off-by: Matthew Wilcox (Oracle)
Reviewe
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in erofs.
Signed-off-by: Matthew Wilcox (Oracle)
Acked-by: Gao Xiang
Reviewed-by: Dave Chinner
---
fs/erofs/zdata.c | 29 +
1 file changed, 9 insertions(+), 20 deletions(-)
diff --git
From: "Matthew Wilcox (Oracle)"
Replace the page_offset variable with 'index + i'.
Signed-off-by: Matthew Wilcox (Oracle)
Reviewed-by: John Hubbard
Reviewed-by: Christoph Hellwig
---
mm/readahead.c | 8 +++-
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/mm/rea
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)
Reviewed-by: Christoph Hellwig
Reviewed-by: Dave Chinner
Reviewed-by: John Hubbard
---
mm/reada
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in erofs
Signed-off-by: Matthew Wilcox (Oracle)
Acked-by: Gao Xiang
---
fs/erofs/data.c | 39 +---
fs/erofs/zdata.c | 2 +-
include/trace/events/erofs.h | 6
From: "Matthew Wilcox (Oracle)"
If the page is already in cache, we don't set PageReadahead on it.
Signed-off-by: Matthew Wilcox (Oracle)
---
mm/readahead.c | 9 ++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/mm/readahead.c b/mm/readahead.c
index 8e
On Mon, Feb 24, 2020 at 02:17:49PM -0800, Christoph Hellwig wrote:
> On Thu, Feb 20, 2020 at 08:24:04AM -0800, Matthew Wilcox wrote:
> > On Thu, Feb 20, 2020 at 07:47:41AM -0800, Christoph Hellwig wrote:
> > > On Wed, Feb 19, 2020 at 01:01:00PM -0800, Matthew Wilcox wrote:
>
On Mon, Feb 24, 2020 at 01:43:47PM -0800, Christoph Hellwig wrote:
> On Thu, Feb 20, 2020 at 07:57:27AM -0800, Christoph Hellwig wrote:
> > On Thu, Feb 20, 2020 at 07:54:52AM -0800, Matthew Wilcox wrote:
> > > On Thu, Feb 20, 2020 at 07:46:58AM -0800, Christoph Hellwig wrote:
&
On Fri, Feb 21, 2020 at 05:00:13PM -0800, Darrick J. Wong wrote:
> On Thu, Feb 20, 2020 at 08:57:34AM -0800, Matthew Wilcox wrote:
> > On Thu, Feb 20, 2020 at 07:49:12AM -0800, Christoph Hellwig wrote:
> > +/**
> > + * iomap_readahead - Attempt to read pages from a file.
&g
On Sat, Jan 25, 2020 at 09:53:29AM +0800, Gao Xiang wrote:
> > + /* all the page errors are ignored when readahead */
> > + if (IS_ERR(bio)) {
> > + pr_err("%s, readahead error at page %lu of nid %llu\n",
> > + __func__, page->index,
>
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;
>
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 Wed, Jan 29, 2020 at 11:57:41AM +1100, Dave Chinner wrote:
> > + bio = NULL;
> > + put_page(page);
> > }
> >
> > - /* pages could still be locked */
> > put_page(page);
>
> A double put_page() on error?
Yup, already fixed
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
> > mainta
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in erofs
Signed-off-by: Matthew Wilcox (Oracle)
Cc: linux-erofs@lists.ozlabs.org
---
fs/erofs/data.c | 33 +
fs/erofs/zdata.c | 2 +-
include/trace/events/er
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in erofs.
Signed-off-by: Matthew Wilcox (Oracle)
Cc: linux-erofs@lists.ozlabs.org
---
fs/erofs/zdata.c | 21 +++--
1 file changed, 7 insertions(+), 14 deletions(-)
diff --git a/fs/erofs/zdata.c b/fs/ero
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)"
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 pa
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-erofs@lists.ozlabs.org
Cc: linux-e...@vger.kernel.org
Cc: linux-f2fs-de...@lists.sourc
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
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in erofs.
Signed-off-by: Matthew Wilcox (Oracle)
Cc: linux-erofs@lists.ozlabs.org
---
fs/erofs/zdata.c | 21 +++--
1 file changed, 7 insertions(+), 14 deletions(-)
diff --git a/fs/erofs/zdata.c b/fs/ero
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-erofs@lists.ozlabs.org
Cc: linux-e...@vger.kernel.org
Cc: linux-f2fs-de...@lists.sourc
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 pa
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in erofs. Fix what I believe to be
a refcounting bug in the error case.
Signed-off-by: Matthew Wilcox (Oracle)
Cc: linux-erofs@lists.ozlabs.org
---
fs/erofs/data.c | 34 ++
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in iomap. Convert XFS and ZoneFS to
use it.
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/iomap/buffered-io.c | 91 +++---
fs/iomap/trace.h | 2 +-
fs/xfs/xfs_aops.c
From: "Matthew Wilcox (Oracle)"
Ensure that memory allocations in the readahead path do not attempt to
reclaim file-backed pages, which could lead to a deadlock. It is
possible, though unlikely this is the root cause of a problem observed
by Cong Wang.
Signed-off-by: Matthew Wilc
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in iomap. Convert XFS and ZoneFS to
use it.
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/iomap/buffered-io.c | 116 -
fs/iomap/trace.h | 2 +-
fs/xfs/xfs_aops.c
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)"
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
From: "Matthew Wilcox (Oracle)"
Move the declaration of 'page' to inside the loop and move the 'kick
off a fresh batch' code to the end of the function for easier use in
subsequent patches.
Signed-off-by: Matthew Wilcox (Oracle)
---
mm/readahead.c | 21 +
1 fi
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
From: "Matthew Wilcox (Oracle)"
This replaces ->readpages with a saner interface:
- Return void 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 cache instead of
ha
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in f2fs
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/f2fs/data.c | 50 +++--
fs/f2fs/f2fs.h | 5 ++--
include/trace/events/f2fs.h | 6 ++---
3 files c
From: "Matthew Wilcox (Oracle)"
ondemand_readahead has two callers, neither of which use the return value.
That means that both ra_submit and __do_page_cache_readahead() can return
void, and we don't need to worry that a present page in the readahead
window causes us to return a smalle
On Mon, Feb 17, 2020 at 10:45:41AM -0800, Matthew Wilcox wrote:
> This series adds a readahead address_space operation to eventually
*sigh*. Clearly I forgot to rm -rf an earlier version. Please disregard
any patches labelled n/16. I can send a v7 if this is too much hassle.
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in erofs.
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/erofs/zdata.c | 29 +
1 file changed, 9 insertions(+), 20 deletions(-)
diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c
index 17
From: "Matthew Wilcox (Oracle)"
Eliminate the page_offset variable which was confusing with the
'offset' parameter and record the start of each consecutive run of
pages in the readahead_control.
Signed-off-by: Matthew Wilcox (Oracle)
---
mm/readahead.c | 10 ++
1 file
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
From: "Matthew Wilcox (Oracle)"
Ensure that memory allocations in the readahead path do not attempt to
reclaim file-backed pages, which could lead to a deadlock. It is
possible, though unlikely this is the root cause of a problem observed
by Cong Wang.
Signed-off-by: Matthew Wilc
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in fuse. Switching away from the
read_cache_pages() helper gets rid of an implicit call to put_page(),
so we can get rid of the get_page() call in fuse_readpages_fill().
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/f
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in btrfs. Add a
readahead_for_each_batch() iterator to optimise the loop in the XArray.
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/btrfs/extent_io.c| 48 ++---
fs/btrfs/e
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in fuse. Switching away from the
read_cache_pages() helper gets rid of an implicit call to put_page(),
so we can get rid of the get_page() call in fuse_readpages_fill().
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/f
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in ext4
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/ext4/ext4.h | 3 +--
fs/ext4/inode.c| 23 ++-
fs/ext4/readpage.c | 22 --
3 files changed, 19 insertions(+), 29
From: "Matthew Wilcox (Oracle)"
In this patch, only between __do_page_cache_readahead() and
read_pages(), but it will be extended in upcoming patches. Also add
the readahead_count() accessor.
Signed-off-by: Matthew Wilcox (Oracle)
---
include/linux/pagemap.h | 17 +++
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)
Reviewed-by: Christoph Hellwig
---
mm/readahead.c | 8 ++--
1 file changed, 2 insertions(+), 6 deletion
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
From: "Matthew Wilcox (Oracle)"
At allocation time, put the pages in the cache unless we're using
->readpages. Add the readahead_for_each() iterator for the benefit of
the ->readpage fallback. This iterator supports huge pages, even though
none of the filesystems to be
From: "Matthew Wilcox (Oracle)"
ext4 and f2fs have duplicated the guts of the readahead code so
they can read past i_size. Instead, separate out the guts of the
readahead code so they can call it directly.
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/ext4/verity.c
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)"
ext4 and f2fs have duplicated the guts of the readahead code so
they can read past i_size. Instead, separate out the guts of the
readahead code so they can call it directly.
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/ext4/verity.c
From: "Matthew Wilcox (Oracle)"
Change the type of page_idx to unsigned long, and rename it -- it's
just a loop counter, not a page index.
Suggested-by: John Hubbard
Signed-off-by: Matthew Wilcox (Oracle)
---
mm/readahead.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletion
From: "Matthew Wilcox (Oracle)"
This replaces ->readpages with a saner interface:
- Return void 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 cache instead of
ha
From: "Matthew Wilcox (Oracle)"
At allocation time, put the pages in the cache unless we're using
->readpages. Add the readahead_for_each() iterator for the benefit of
the ->readpage fallback. This iterator supports huge pages, even though
none of the filesystems to be
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in f2fs
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/f2fs/data.c | 50 +++--
fs/f2fs/f2fs.h | 5 ++--
include/trace/events/f2fs.h | 6 ++---
3 files c
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in erofs.
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/erofs/zdata.c | 29 +
1 file changed, 9 insertions(+), 20 deletions(-)
diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c
index 17
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in btrfs. Add a
readahead_for_each_batch() iterator to optimise the loop in the XArray.
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/btrfs/extent_io.c| 46 +
fs/btrfs/e
From: "Matthew Wilcox (Oracle)"
Eliminate the page_offset variable which was just confusing;
record the start of each consecutive run of pages in the
readahead_control, and move the 'kick off a fresh batch' code to
the end of the function for easier use in the next patch.
Signed-off-b
From: "Matthew Wilcox (Oracle)"
Use the new readahead operation in ext4
Signed-off-by: Matthew Wilcox (Oracle)
---
fs/ext4/ext4.h | 3 +--
fs/ext4/inode.c| 23 ++-
fs/ext4/readpage.c | 22 --
3 files changed, 19 insertions(+), 29
On Mon, Feb 17, 2020 at 05:11:46PM +0100, Mauro Carvalho Chehab wrote:
> There are lots of plain text documents under Documentation/filesystems.
>
> Manually convert several of those to ReST and add them to the index file.
I think at least 90% of this material needs to be in admin-guide. Should
On Tue, Feb 18, 2020 at 01:05:29PM -0800, John Hubbard wrote:
> This is an easy review and obviously correct, so:
>
> Reviewed-by: John Hubbard
Thanks
> Thoughts for the future of the API:
>
> I will add that I could envision another patchset that went in the
> opposite direction, and
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