From: Li Guifu
Add build environment, license and maintainers etc.
Signed-off-by: Li Guifu
Signed-off-by: Miao Xie
Signed-off-by: Fang Wei
---
.gitignore | 44
AUTHORS | 6 +++
COPYING | 113 +++
ChangeLog
From: Li Guifu
This patch introduces a compression framework, so it can support
different compression algorithm in principle, currently lz4hc is
added right now due to the kernel implementation.
Signed-off-by: Li Guifu
Signed-off-by: Miao Xie
Signed-off-by: Fang Wei
---
erofs_compressor.c |
From: Li Guifu
This patch adds basic code to generate erofs file systems and
empty images can be created properly.
Some parameters are also introduced in this patch, used for
setting the debugging level, whether to compress or not.
Signed-off-by: Li Guifu
Signed-off-by: Miao Xie
From: Li Guifu
Currently, regular files, directories, special files defined in POSIX
are supported and the generated image can be mounted by kernel.
Signed-off-by: Li Guifu
Signed-off-by: Miao Xie
Signed-off-by: Fang Wei
---
erofs_cache.c | 211 ++
erofs_cache.h | 58
From: Li Guifu
This patch adds a header file describing the erofs on-disk layout, which
should be kept in line with the kernel implementation all the time.
Signed-off-by: Li Guifu
Signed-off-by: Miao Xie
Signed-off-by: Fang Wei
---
erofs_fs.h | 298
From: Li Guifu
This patchset introduces the source code for mkfs.erofs. It can build
erofs image from scratch according to a specific directory.
Currently, it can build lz4 compressed images and uncompressed images.
Regular files, directories and special files are supported.
However it can only
On 2018/11/13 4:43, Cristian Sicilia wrote:
> Align parameters to the opened parentesis.
>
> Signed-off-by: Cristian Sicilia
Reviewed-by: Chao Yu
Thanks,
On 2018/11/13 4:43, Cristian Sicilia wrote:
> Comparisons should place the constant
> on the right side of the test.
>
> Signed-off-by: Cristian Sicilia
Reviewed-by: Chao Yu
Thanks,
On 2018/11/13 4:43, Cristian Sicilia wrote:
> Replace equal to NULL with logic unary operator,
> and removing not equal to NULL comparison.
>
> Signed-off-by: Cristian Sicilia
Reviewed-by: Chao Yu
Thanks,
Hi Xiang,
On 2018/11/16 10:55, Gao Xiang wrote:
> Hi Chao,
>
> On 2018/11/16 10:53, Chao Yu wrote:
>> On 2018/11/14 23:25, Gao Xiang wrote:
>>> From: Cristian Sicilia
>>>
>>> Replace equal to NULL with logic unary operator,
>>> and removing not equal to NULL comparison.
>>>
>>> Signed-off-by:
On 2018/11/14 23:25, Gao Xiang wrote:
> `trace_erofs_readpage' should be placed in .readpage()
> rather than in the internal `z_erofs_do_read_page'.
>
> Fixes: 284db12cfda3 ("staging: erofs: add trace points for reading zipped
> data")
> Signed-off-by: Gao Xiang
> Reviewed-by: Chen Gong
Hi Chao,
On 2018/11/16 10:53, Chao Yu wrote:
> On 2018/11/14 23:25, Gao Xiang wrote:
>> From: Cristian Sicilia
>>
>> Replace equal to NULL with logic unary operator,
>> and removing not equal to NULL comparison.
>>
>> Signed-off-by: Cristian Sicilia
>
> Reviewed-by: Chao Yu
>
This patch is
On 2018/11/14 23:25, Gao Xiang wrote:
> From: Cristian Sicilia
>
> Comparisons should place the constant
> on the right side of the test.
>
> Signed-off-by: Cristian Sicilia
Reviewed-by: Chao Yu
Thanks,
On 2018/11/14 23:25, Gao Xiang wrote:
> From: Cristian Sicilia
>
> Align parameters to the opened parentesis.
>
> Signed-off-by: Cristian Sicilia
Reviewed-by: Chao Yu
Thanks,
On 2018/11/14 23:25, Gao Xiang wrote:
> From: Cristian Sicilia
>
> Replace equal to NULL with logic unary operator,
> and removing not equal to NULL comparison.
>
> Signed-off-by: Cristian Sicilia
Reviewed-by: Chao Yu
Thanks,
On Thu, Nov 15, 2018 at 04:53:05PM +0800, Ming Lei wrote:
> Since bdced438acd83ad83a6c ("block: setup bi_phys_segments after splitting"),
> physical segment number is mainly figured out in blk_queue_split() for
> fast path, and the flag of BIO_SEG_VALID is set there too.
>
> Now only
On Thu, Nov 15, 2018 at 04:53:04PM +0800, Ming Lei wrote:
> It is wrong to use bio->bi_vcnt to figure out how many segments
> there are in the bio even though CLONED flag isn't set on this bio,
> because this bio may be splitted or advanced.
>
> So always use bio_segments() in
On Thu, Nov 15, 2018 at 04:53:03PM +0800, Ming Lei wrote:
> Now multi-page bvec is supported, some helpers may return page by
> page, meantime some may return segment by segment, this patch
> documents the usage.
>
> Cc: Dave Chinner
> Cc: Kent Overstreet
> Cc: Mike Snitzer
> Cc:
On Thu, Nov 15, 2018 at 04:53:01PM +0800, Ming Lei wrote:
> This patch pulls the trigger for multi-page bvecs.
>
> Now any request queue which supports queue cluster will see multi-page
> bvecs.
>
> Cc: Dave Chinner
> Cc: Kent Overstreet
> Cc: Mike Snitzer
> Cc: dm-de...@redhat.com
> Cc:
On Thu, Nov 15, 2018 at 04:53:02PM +0800, Ming Lei wrote:
> Now multi-page bvec can cover CONFIG_THP_SWAP, so we don't need to
> increase BIO_MAX_PAGES for it.
You mentioned to it in the cover letter, but this needs more explanation
in the commit message. Why did CONFIG_THP_SWAP require > 256?
On Thu, Nov 15, 2018 at 04:53:00PM +0800, Ming Lei wrote:
> After multi-page is enabled, one new page may be merged to a segment
> even though it is a new added page.
>
> This patch deals with this issue by post-check in case of merge, and
> only a freshly new added page need to be dealt with for
On Thu, Nov 15, 2018 at 04:52:56PM +0800, Ming Lei wrote:
> There are still cases in which we need to use bio_bvecs() for get the
> number of multi-page segment, so introduce it.
>
> Cc: Dave Chinner
> Cc: Kent Overstreet
> Cc: Mike Snitzer
> Cc: dm-de...@redhat.com
> Cc: Alexander Viro
> Cc:
On Thu, Nov 15, 2018 at 04:52:52PM +0800, Ming Lei wrote:
> BTRFS and guard_bio_eod() need to get the last singlepage segment
> from one multipage bvec, so introduce this helper to make them happy.
>
> Cc: Dave Chinner
> Cc: Kent Overstreet
> Cc: Mike Snitzer
> Cc: dm-de...@redhat.com
> Cc:
On Thu, Nov 15, 2018 at 04:52:57PM +0800, Ming Lei wrote:
> iov_iter is implemented with bvec itererator, so it is safe to pass
> multipage bvec to it, and this way is much more efficient than
> passing one page in each bvec.
>
> Cc: Dave Chinner
> Cc: Kent Overstreet
> Cc: Mike Snitzer
> Cc:
On Thu, Nov 15, 2018 at 04:52:53PM +0800, Ming Lei wrote:
> Once multi-page bvec is enabled, the last bvec may include more than one
> page, this patch use bvec_last_segment() to truncate the bio.
>
> Cc: Dave Chinner
> Cc: Kent Overstreet
> Cc: Mike Snitzer
> Cc: dm-de...@redhat.com
> Cc:
On Thu, Nov 15, 2018 at 04:52:54PM +0800, Ming Lei wrote:
> Preparing for supporting multi-page bvec.
>
> Cc: Dave Chinner
> Cc: Kent Overstreet
> Cc: Mike Snitzer
> Cc: dm-de...@redhat.com
> Cc: Alexander Viro
> Cc: linux-fsde...@vger.kernel.org
> Cc: Shaohua Li
> Cc:
On Thu, Nov 15, 2018 at 04:52:58PM +0800, Ming Lei wrote:
> bch_bio_alloc_pages() is always called on one new bio, so it is safe
> to access the bvec table directly. Given it is the only kind of this
> case, open code the bvec table access since bio_for_each_segment_all()
> will be changed to
On Thu, Nov 15, 2018 at 04:52:55PM +0800, Ming Lei wrote:
> BTRFS is the only user of this helper, so move this helper into
> BTRFS, and implement it via bio_for_each_segment_all(), since
> bio->bi_vcnt may not equal to number of pages after multipage bvec
> is enabled.
Shouldn't you also get rid
On Thu, Nov 15, 2018 at 04:52:48PM +0800, Ming Lei wrote:
> This patch introduces helpers of 'mp_bvec_iter_*' for multipage
> bvec support.
>
> The introduced helpers treate one bvec as real multi-page segment,
> which may include more than one pages.
>
> The existed helpers of bvec_iter_* are
On Thu, Nov 15 2018 at 3:20pm -0500,
Omar Sandoval wrote:
> On Thu, Nov 15, 2018 at 04:52:50PM +0800, Ming Lei wrote:
> > First it is more efficient to use bio_for_each_bvec() in both
> > blk_bio_segment_split() and __blk_recalc_rq_segments() to compute how
> > many multi-page bvecs there are
On Thu, Nov 15, 2018 at 04:52:51PM +0800, Ming Lei wrote:
> It is more efficient to use bio_for_each_bvec() to map sg, meantime
> we have to consider splitting multipage bvec as done in
> blk_bio_segment_split().
>
> Cc: Dave Chinner
> Cc: Kent Overstreet
> Cc: Mike Snitzer
> Cc:
On Thu, Nov 15, 2018 at 04:52:50PM +0800, Ming Lei wrote:
> First it is more efficient to use bio_for_each_bvec() in both
> blk_bio_segment_split() and __blk_recalc_rq_segments() to compute how
> many multi-page bvecs there are in the bio.
>
> Secondly once bio_for_each_bvec() is used, the bvec
On Thu, Nov 15, 2018 at 04:52:49PM +0800, Ming Lei wrote:
> This helper is used for iterating over multi-page bvec for bio
> split & merge code.
>
> Cc: Dave Chinner
> Cc: Kent Overstreet
> Cc: Mike Snitzer
> Cc: dm-de...@redhat.com
> Cc: Alexander Viro
> Cc: linux-fsde...@vger.kernel.org
>
Previously, 2 members called `initial' and `cachedzone_la' are used
for applying caching policy (whether the workgroup is at either end),
which are hard to understand, rename them to `backmost' and `headoffset'.
Signed-off-by: Gao Xiang
---
drivers/staging/erofs/unzip_vle.c | 25
This patch fully closes race between page reclaiming and
compressed pages submitting, which could cause very low
probability of reference leak and double free.
Signed-off-by: Gao Xiang
---
drivers/staging/erofs/unzip_vle.c | 331 ++
This patch introduces MNGD_MAPPING to wrap up
sbi->managed_cache->i_mapping.
Signed-off-by: Gao Xiang
---
drivers/staging/erofs/internal.h | 4
drivers/staging/erofs/unzip_vle.c | 29 +
2 files changed, 17 insertions(+), 16 deletions(-)
diff --git
QUEUE_FLAG_NO_SG_MERGE has been killed, so kill BLK_MQ_F_SG_MERGE too.
Cc: Dave Chinner
Cc: Kent Overstreet
Cc: Mike Snitzer
Cc: dm-de...@redhat.com
Cc: Alexander Viro
Cc: linux-fsde...@vger.kernel.org
Cc: Shaohua Li
Cc: linux-r...@vger.kernel.org
Cc: linux-erofs@lists.ozlabs.org
Cc: David
Since bdced438acd83ad83a6c ("block: setup bi_phys_segments after splitting"),
physical segment number is mainly figured out in blk_queue_split() for
fast path, and the flag of BIO_SEG_VALID is set there too.
Now only blk_recount_segments() and blk_recalc_rq_segments() use this
flag.
Basically
Now multi-page bvec is supported, some helpers may return page by
page, meantime some may return segment by segment, this patch
documents the usage.
Cc: Dave Chinner
Cc: Kent Overstreet
Cc: Mike Snitzer
Cc: dm-de...@redhat.com
Cc: Alexander Viro
Cc: linux-fsde...@vger.kernel.org
Cc: Shaohua
Now multi-page bvec can cover CONFIG_THP_SWAP, so we don't need to
increase BIO_MAX_PAGES for it.
Cc: Dave Chinner
Cc: Kent Overstreet
Cc: Mike Snitzer
Cc: dm-de...@redhat.com
Cc: Alexander Viro
Cc: linux-fsde...@vger.kernel.org
Cc: Shaohua Li
Cc: linux-r...@vger.kernel.org
Cc:
bch_bio_alloc_pages() is always called on one new bio, so it is safe
to access the bvec table directly. Given it is the only kind of this
case, open code the bvec table access since bio_for_each_segment_all()
will be changed to support for iterating over multipage bvec.
Cc: Dave Chinner
Cc: Kent
iov_iter is implemented with bvec itererator, so it is safe to pass
multipage bvec to it, and this way is much more efficient than
passing one page in each bvec.
Cc: Dave Chinner
Cc: Kent Overstreet
Cc: Mike Snitzer
Cc: dm-de...@redhat.com
Cc: Alexander Viro
Cc: linux-fsde...@vger.kernel.org
There are still cases in which we need to use bio_bvecs() for get the
number of multi-page segment, so introduce it.
Cc: Dave Chinner
Cc: Kent Overstreet
Cc: Mike Snitzer
Cc: dm-de...@redhat.com
Cc: Alexander Viro
Cc: linux-fsde...@vger.kernel.org
Cc: Shaohua Li
Cc:
Once multi-page bvec is enabled, the last bvec may include more than one
page, this patch use bvec_last_segment() to truncate the bio.
Cc: Dave Chinner
Cc: Kent Overstreet
Cc: Mike Snitzer
Cc: dm-de...@redhat.com
Cc: Alexander Viro
Cc: linux-fsde...@vger.kernel.org
Cc: Shaohua Li
Cc:
BTRFS and guard_bio_eod() need to get the last singlepage segment
from one multipage bvec, so introduce this helper to make them happy.
Cc: Dave Chinner
Cc: Kent Overstreet
Cc: Mike Snitzer
Cc: dm-de...@redhat.com
Cc: Alexander Viro
Cc: linux-fsde...@vger.kernel.org
Cc: Shaohua Li
Cc:
Preparing for supporting multi-page bvec.
Cc: Dave Chinner
Cc: Kent Overstreet
Cc: Mike Snitzer
Cc: dm-de...@redhat.com
Cc: Alexander Viro
Cc: linux-fsde...@vger.kernel.org
Cc: Shaohua Li
Cc: linux-r...@vger.kernel.org
Cc: linux-erofs@lists.ozlabs.org
Cc: David Sterba
Cc:
This helper is used for iterating over multi-page bvec for bio
split & merge code.
Cc: Dave Chinner
Cc: Kent Overstreet
Cc: Mike Snitzer
Cc: dm-de...@redhat.com
Cc: Alexander Viro
Cc: linux-fsde...@vger.kernel.org
Cc: Shaohua Li
Cc: linux-r...@vger.kernel.org
Cc: linux-erofs@lists.ozlabs.org
Hi,
This patchset brings multi-page bvec into block layer:
1) what is multi-page bvec?
Multipage bvecs means that one 'struct bio_bvec' can hold multiple pages
which are physically contiguous instead of one single page used in linux
kernel for long time.
2) why is multi-page bvec introduced?
It is more efficient to use bio_for_each_bvec() to map sg, meantime
we have to consider splitting multipage bvec as done in blk_bio_segment_split().
Cc: Dave Chinner
Cc: Kent Overstreet
Cc: Mike Snitzer
Cc: dm-de...@redhat.com
Cc: Alexander Viro
Cc: linux-fsde...@vger.kernel.org
Cc: Shaohua
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