[PATCH net-next] net: dsa: dsa_loop: Make dynamic debugging helpful

Remove redundant debug prints from phy_read/write since we can trace those calls through trace events. Enhance dynamic debug prints to print arguments which helps figuring how what is going on at the driver level with higher level configuration interfaces. Signed-off-by: Florian Fainelli

[RESEND PATCH V5 29/33] block: rename bio_for_each_page_all2 as bio_for_each_page_all

Now bio_for_each_page_all() is gone, we can reuse the name to iterate bio page by page, which is done via bio_for_each_page_all2() now. Signed-off-by: Ming Lei --- block/bio.c | 14 +++--- block/blk-zoned.c | 4 ++-- block/bounce.c

[RESEND PATCH V5 29/33] block: rename bio_for_each_page_all2 as bio_for_each_page_all

Now bio_for_each_page_all() is gone, we can reuse the name to iterate bio page by page, which is done via bio_for_each_page_all2() now. Signed-off-by: Ming Lei --- block/bio.c | 14 +++--- block/blk-zoned.c | 4 ++-- block/bounce.c| 4 ++--

[PATCH net-next] net: dsa: dsa_loop: Make dynamic debugging helpful

Remove redundant debug prints from phy_read/write since we can trace those calls through trace events. Enhance dynamic debug prints to print arguments which helps figuring how what is going on at the driver level with higher level configuration interfaces. Signed-off-by: Florian Fainelli ---

[RESEND PATCH V5 33/33] block: document usage of bio iterator helpers

Now multipage bvec is supported, and some helpers may return page by page, and some may return segment by segment, this patch documents the usage for helping us use them correctly. Signed-off-by: Ming Lei --- Documentation/block/biovecs.txt | 32

[RESEND PATCH V5 28/33] block: kill bio_for_each_page_all()

No one uses it any more, so kill it and we can reuse this helper name. Signed-off-by: Ming Lei --- include/linux/bio.h | 7 +++ 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/include/linux/bio.h b/include/linux/bio.h index 5ae2bc876295..c5e692d43f23

[RESEND PATCH V5 31/33] block: bio: pass segments to bio if bio_add_page() is bypassed

Under some situations, such as block direct I/O, we can't use bio_add_page() for merging pages into multipage bvec, so a new function is implemented for converting page array into one segment array, then these cases can benefit from multipage bvec too. Signed-off-by: Ming Lei

[RESEND PATCH V5 28/33] block: kill bio_for_each_page_all()

No one uses it any more, so kill it and we can reuse this helper name. Signed-off-by: Ming Lei --- include/linux/bio.h | 7 +++ 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/include/linux/bio.h b/include/linux/bio.h index 5ae2bc876295..c5e692d43f23 100644 ---

[RESEND PATCH V5 31/33] block: bio: pass segments to bio if bio_add_page() is bypassed

Under some situations, such as block direct I/O, we can't use bio_add_page() for merging pages into multipage bvec, so a new function is implemented for converting page array into one segment array, then these cases can benefit from multipage bvec too. Signed-off-by: Ming Lei --- block/bio.c |

[RESEND PATCH V5 33/33] block: document usage of bio iterator helpers

Now multipage bvec is supported, and some helpers may return page by page, and some may return segment by segment, this patch documents the usage for helping us use them correctly. Signed-off-by: Ming Lei --- Documentation/block/biovecs.txt | 32 1 file changed,

[RESEND PATCH V5 32/33] block: always define BIO_MAX_PAGES as 256

Now multipage bvec can cover CONFIG_THP_SWAP, so we don't need to increase BIO_MAX_PAGES for it. Signed-off-by: Ming Lei --- include/linux/bio.h | 8 1 file changed, 8 deletions(-) diff --git a/include/linux/bio.h b/include/linux/bio.h index

[RESEND PATCH V5 32/33] block: always define BIO_MAX_PAGES as 256

Now multipage bvec can cover CONFIG_THP_SWAP, so we don't need to increase BIO_MAX_PAGES for it. Signed-off-by: Ming Lei --- include/linux/bio.h | 8 1 file changed, 8 deletions(-) diff --git a/include/linux/bio.h b/include/linux/bio.h index fc8a8238805e..839dddf81d09 100644 ---

[RESEND PATCH V5 22/33] btrfs: conver to bio_for_each_page_all2

bio_for_each_page_all() can't be used any more after multipage bvec is enabled, so we have to convert to bio_for_each_page_all2(). Signed-off-by: Ming Lei --- fs/btrfs/compression.c | 3 ++- fs/btrfs/disk-io.c | 3 ++- fs/btrfs/extent_io.c | 9 ++---

[RESEND PATCH V5 22/33] btrfs: conver to bio_for_each_page_all2

bio_for_each_page_all() can't be used any more after multipage bvec is enabled, so we have to convert to bio_for_each_page_all2(). Signed-off-by: Ming Lei --- fs/btrfs/compression.c | 3 ++- fs/btrfs/disk-io.c | 3 ++- fs/btrfs/extent_io.c | 9 ++--- fs/btrfs/inode.c | 6 --

[RESEND PATCH V5 24/33] f2fs: conver to bio_for_each_page_all2

bio_for_each_page_all() can't be used any more after multipage bvec is enabled, so we have to convert to bio_for_each_page_all2(). Signed-off-by: Ming Lei --- fs/f2fs/data.c | 9 ++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/fs/f2fs/data.c

[PATCH] powerpc/modules: remove unused mod_arch_specific.toc field

The toc field in the mod_arch_specific struct isn't actually used anywhere, so remove it. Also the ftrace-specific fields are now common between 32-bit and 64-bit, so simplify the struct definition a bit by moving them out of the __powerpc64__ #ifdef. Signed-off-by: Josh Poimboeuf

[PATCH] powerpc/modules: remove unused mod_arch_specific.toc field

The toc field in the mod_arch_specific struct isn't actually used anywhere, so remove it. Also the ftrace-specific fields are now common between 32-bit and 64-bit, so simplify the struct definition a bit by moving them out of the __powerpc64__ #ifdef. Signed-off-by: Josh Poimboeuf ---

[RESEND PATCH V5 24/33] f2fs: conver to bio_for_each_page_all2

bio_for_each_page_all() can't be used any more after multipage bvec is enabled, so we have to convert to bio_for_each_page_all2(). Signed-off-by: Ming Lei --- fs/f2fs/data.c | 9 ++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index

[RESEND PATCH V5 26/33] exofs: conver to bio_for_each_page_all2

bio_for_each_page_all() can't be used any more after multipage bvec is enabled, so we have to convert to bio_for_each_page_all2(). Signed-off-by: Ming Lei --- fs/exofs/ore.c | 3 ++- fs/exofs/ore_raid.c | 3 ++- 2 files changed, 4 insertions(+), 2 deletions(-) diff

[RESEND PATCH V5 26/33] exofs: conver to bio_for_each_page_all2

bio_for_each_page_all() can't be used any more after multipage bvec is enabled, so we have to convert to bio_for_each_page_all2(). Signed-off-by: Ming Lei --- fs/exofs/ore.c | 3 ++- fs/exofs/ore_raid.c | 3 ++- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/fs/exofs/ore.c

[RESEND PATCH V5 25/33] xfs: conver to bio_for_each_page_all2

bio_for_each_page_all() can't be used any more after multipage bvec is enabled, so we have to convert to bio_for_each_page_all2(). Given bvec can't be changed under bio_for_each_page_all2(), this patch marks the bvec parameter as 'const' for xfs_finish_page_writeback(). Signed-off-by: Ming Lei

[RESEND PATCH V5 27/33] gfs2: conver to bio_for_each_page_all2

bio_for_each_page_all() can't be used any more after multipage bvec is enabled, so we have to convert to bio_for_each_page_all2(). Given bvec can't be changed inside bio_for_each_page_all2(), this patch marks the bvec parameter as 'const' for gfs2_end_log_write_bh(). Signed-off-by: Ming Lei

[RESEND PATCH V5 25/33] xfs: conver to bio_for_each_page_all2

bio_for_each_page_all() can't be used any more after multipage bvec is enabled, so we have to convert to bio_for_each_page_all2(). Given bvec can't be changed under bio_for_each_page_all2(), this patch marks the bvec parameter as 'const' for xfs_finish_page_writeback(). Signed-off-by: Ming Lei

[RESEND PATCH V5 27/33] gfs2: conver to bio_for_each_page_all2

bio_for_each_page_all() can't be used any more after multipage bvec is enabled, so we have to convert to bio_for_each_page_all2(). Given bvec can't be changed inside bio_for_each_page_all2(), this patch marks the bvec parameter as 'const' for gfs2_end_log_write_bh(). Signed-off-by: Ming Lei ---

[RESEND PATCH V5 20/33] md/dm/bcache: conver to bio_for_each_page_all2 and bio_for_each_segment

In bch_bio_alloc_pages(), bio_for_each_segment() is fine because this helper can only be used on a freshly new bio. For other cases, we conver to bio_for_each_page_all2() since they needn't to update bvec table. bio_for_each_page_all() can't be used any more after multipage bvec is enabled, so

[RESEND PATCH V5 21/33] fs: conver to bio_for_each_page_all2

bio_for_each_page_all() can't be used any more after multipage bvec is enabled, so we have to convert to bio_for_each_page_all2(). Signed-off-by: Ming Lei --- fs/block_dev.c | 6 -- fs/crypto/bio.c | 3 ++- fs/direct-io.c | 4 +++- fs/iomap.c | 3 ++- fs/mpage.c

[RESEND PATCH V5 20/33] md/dm/bcache: conver to bio_for_each_page_all2 and bio_for_each_segment

In bch_bio_alloc_pages(), bio_for_each_segment() is fine because this helper can only be used on a freshly new bio. For other cases, we conver to bio_for_each_page_all2() since they needn't to update bvec table. bio_for_each_page_all() can't be used any more after multipage bvec is enabled, so

[RESEND PATCH V5 21/33] fs: conver to bio_for_each_page_all2

bio_for_each_page_all() can't be used any more after multipage bvec is enabled, so we have to convert to bio_for_each_page_all2(). Signed-off-by: Ming Lei --- fs/block_dev.c | 6 -- fs/crypto/bio.c | 3 ++- fs/direct-io.c | 4 +++- fs/iomap.c | 3 ++- fs/mpage.c | 3 ++- 5 files

[RESEND PATCH V5 19/33] block: convert to bio_for_each_page_all2()

We have to convert to bio_for_each_page_all2() for iterating page by page. bio_for_each_page_all() can't be used any more after multipage bvec is enabled. Signed-off-by: Ming Lei --- block/bio.c | 18 -- block/blk-zoned.c | 5 +++--

Re: Wrong -dirty suffix set by setlocalversion (was: BUG in git diff-index)

On 24/05/2018 16:03, Mike Mason wrote: > diff --git a/scripts/setlocalversion b/scripts/setlocalversion > index 71f39410691b..9da4c5e83285 100755 > --- a/scripts/setlocalversion > +++ b/scripts/setlocalversion > @@ -73,8 +73,10 @@ scm_version() > printf -- '-svn%s' "`git svn

[RESEND PATCH V5 19/33] block: convert to bio_for_each_page_all2()

We have to convert to bio_for_each_page_all2() for iterating page by page. bio_for_each_page_all() can't be used any more after multipage bvec is enabled. Signed-off-by: Ming Lei --- block/bio.c | 18 -- block/blk-zoned.c | 5 +++-- block/bounce.c | 6 --

Re: Wrong -dirty suffix set by setlocalversion (was: BUG in git diff-index)

On 24/05/2018 16:03, Mike Mason wrote: > diff --git a/scripts/setlocalversion b/scripts/setlocalversion > index 71f39410691b..9da4c5e83285 100755 > --- a/scripts/setlocalversion > +++ b/scripts/setlocalversion > @@ -73,8 +73,10 @@ scm_version() > printf -- '-svn%s' "`git svn

[RESEND PATCH V5 18/33] block: deal with dirtying pages for multipage bvec

In bio_check_pages_dirty(), bvec->bv_page is used as flag for marking if the page has been dirtied & released, and if no, it will be dirtied in deferred workqueue. With multipage bvec, we can't do that any more, so change the logic into checking all pages in one mp bvec, and only release all

[RESEND PATCH V5 18/33] block: deal with dirtying pages for multipage bvec

In bio_check_pages_dirty(), bvec->bv_page is used as flag for marking if the page has been dirtied & released, and if no, it will be dirtied in deferred workqueue. With multipage bvec, we can't do that any more, so change the logic into checking all pages in one mp bvec, and only release all

[RESEND PATCH V5 17/33] block: bio: introduce bio_for_each_page_all2 and bio_for_each_segment_all

This patch introduces bio_for_each_page_all2(), which is for replacing bio_for_each_page_all() in case that the returned bvec has to be single page bvec. Given the interface type has to be changed for passing one local iterator variable of 'bvec_iter_all', and doing all changes in one single

[RESEND PATCH V5 13/33] block: introduce rq_for_each_segment()

There are still cases in which rq_for_each_segment() is required, for example, loop. Signed-off-by: Ming Lei --- include/linux/blkdev.h | 4 1 file changed, 4 insertions(+) diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 1e8e9b430008..0b15bc625bd7

[RESEND PATCH V5 15/33] block: introduce bio_clone_seg_bioset()

There is one use case(DM) which requires to clone bio segment by segement, so introduce this API. Signed-off-by: Ming Lei --- block/bio.c | 56 +++-- include/linux/bio.h | 1 + 2 files changed, 43 insertions(+), 14

[RESEND PATCH V5 16/33] dm: clone bio via bio_clone_seg_bioset

The incoming bio will become very big after multipage bvec is enabled, so we can't clone bio page by page. This patch uses the introduced bio_clone_seg_bioset(), so the incoming bio can be cloned successfully. This way is safe because device mapping won't modify the bio vector on the cloned

[RESEND PATCH V5 17/33] block: bio: introduce bio_for_each_page_all2 and bio_for_each_segment_all

This patch introduces bio_for_each_page_all2(), which is for replacing bio_for_each_page_all() in case that the returned bvec has to be single page bvec. Given the interface type has to be changed for passing one local iterator variable of 'bvec_iter_all', and doing all changes in one single

[RESEND PATCH V5 13/33] block: introduce rq_for_each_segment()

There are still cases in which rq_for_each_segment() is required, for example, loop. Signed-off-by: Ming Lei --- include/linux/blkdev.h | 4 1 file changed, 4 insertions(+) diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 1e8e9b430008..0b15bc625bd7 100644 ---

[RESEND PATCH V5 15/33] block: introduce bio_clone_seg_bioset()

There is one use case(DM) which requires to clone bio segment by segement, so introduce this API. Signed-off-by: Ming Lei --- block/bio.c | 56 +++-- include/linux/bio.h | 1 + 2 files changed, 43 insertions(+), 14 deletions(-) diff

[RESEND PATCH V5 16/33] dm: clone bio via bio_clone_seg_bioset

The incoming bio will become very big after multipage bvec is enabled, so we can't clone bio page by page. This patch uses the introduced bio_clone_seg_bioset(), so the incoming bio can be cloned successfully. This way is safe because device mapping won't modify the bio vector on the cloned

[RESEND PATCH V5 12/33] block: introduce bio_segments()

There are still cases in which we need to use bio_segments() for get the number of segment, so introduce it. Signed-off-by: Ming Lei --- include/linux/bio.h | 25 - 1 file changed, 20 insertions(+), 5 deletions(-) diff --git a/include/linux/bio.h

[RESEND PATCH V5 12/33] block: introduce bio_segments()

There are still cases in which we need to use bio_segments() for get the number of segment, so introduce it. Signed-off-by: Ming Lei --- include/linux/bio.h | 25 - 1 file changed, 20 insertions(+), 5 deletions(-) diff --git a/include/linux/bio.h b/include/linux/bio.h

[RESEND PATCH V5 14/33] block: loop: pass segments to iov_iter

iov_iter is implemented with bvec itererator, so it is safe to pass segment to it, and this way is much more efficient than passing one page in each bvec. Signed-off-by: Ming Lei --- drivers/block/loop.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff

[RESEND PATCH V5 14/33] block: loop: pass segments to iov_iter

iov_iter is implemented with bvec itererator, so it is safe to pass segment to it, and this way is much more efficient than passing one page in each bvec. Signed-off-by: Ming Lei --- drivers/block/loop.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git

[RESEND PATCH V5 09/33] fs/buffer.c: use bvec iterator to truncate the bio

Once multipage bvec is enabled, the last bvec may include more than one page, this patch use segment_last_page() to truncate the bio. Signed-off-by: Ming Lei --- fs/buffer.c | 5 - 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/buffer.c b/fs/buffer.c

[RESEND PATCH V5 09/33] fs/buffer.c: use bvec iterator to truncate the bio

Once multipage bvec is enabled, the last bvec may include more than one page, this patch use segment_last_page() to truncate the bio. Signed-off-by: Ming Lei --- fs/buffer.c | 5 - 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/buffer.c b/fs/buffer.c index

[RESEND PATCH V5 07/33] block: use bio_for_each_segment() to map sg

It is more efficient to use bio_for_each_segment() to map sg, meantime we have to consider splitting multipage bvec as done in blk_bio_segment_split(). Signed-off-by: Ming Lei --- block/blk-merge.c | 72 +++ 1 file

[RESEND PATCH V5 08/33] block: introduce segment_last_page()

BTRFS and guard_bio_eod() need to get the last page from one segment, so introduce this helper to make them happy. Signed-off-by: Ming Lei --- include/linux/bvec.h | 22 ++ 1 file changed, 22 insertions(+) diff --git a/include/linux/bvec.h

[RESEND PATCH V5 07/33] block: use bio_for_each_segment() to map sg

It is more efficient to use bio_for_each_segment() to map sg, meantime we have to consider splitting multipage bvec as done in blk_bio_segment_split(). Signed-off-by: Ming Lei --- block/blk-merge.c | 72 +++ 1 file changed, 52 insertions(+),

[RESEND PATCH V5 08/33] block: introduce segment_last_page()

BTRFS and guard_bio_eod() need to get the last page from one segment, so introduce this helper to make them happy. Signed-off-by: Ming Lei --- include/linux/bvec.h | 22 ++ 1 file changed, 22 insertions(+) diff --git a/include/linux/bvec.h b/include/linux/bvec.h index

[RESEND PATCH V5 06/33] block: use bio_for_each_segment() to compute segments count

Firstly it is more efficient to use bio_for_each_segment() in both blk_bio_segment_split() and __blk_recalc_rq_segments() to compute how many segments there are in the bio. Secondaly once bio_for_each_segment() is used, the bvec may need to be splitted because its length can be very longer than

[RESEND PATCH V5 06/33] block: use bio_for_each_segment() to compute segments count

Firstly it is more efficient to use bio_for_each_segment() in both blk_bio_segment_split() and __blk_recalc_rq_segments() to compute how many segments there are in the bio. Secondaly once bio_for_each_segment() is used, the bvec may need to be splitted because its length can be very longer than

[RESEND PATCH V5 10/33] btrfs: use segment_last_page to get bio's last page

Preparing for supporting multipage bvec. Cc: Chris Mason Cc: Josef Bacik Cc: David Sterba Cc: linux-bt...@vger.kernel.org Signed-off-by: Ming Lei --- fs/btrfs/compression.c | 5 - fs/btrfs/extent_io.c | 5 +++-- 2 files

[RESEND PATCH V5 11/33] block: implement bio_pages_all() via bio_for_each_page_all()

As multipage bvec will be enabled soon, bio->bi_vcnt isn't same with page count in the bio any more, so use bio_for_each_page_all() to compute the number. Signed-off-by: Ming Lei --- include/linux/bio.h | 8 +++- 1 file changed, 7 insertions(+), 1 deletion(-) diff

[RESEND PATCH V5 10/33] btrfs: use segment_last_page to get bio's last page

Preparing for supporting multipage bvec. Cc: Chris Mason Cc: Josef Bacik Cc: David Sterba Cc: linux-bt...@vger.kernel.org Signed-off-by: Ming Lei --- fs/btrfs/compression.c | 5 - fs/btrfs/extent_io.c | 5 +++-- 2 files changed, 7 insertions(+), 3 deletions(-) diff --git

[RESEND PATCH V5 11/33] block: implement bio_pages_all() via bio_for_each_page_all()

As multipage bvec will be enabled soon, bio->bi_vcnt isn't same with page count in the bio any more, so use bio_for_each_page_all() to compute the number. Signed-off-by: Ming Lei --- include/linux/bio.h | 8 +++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git

[RESEND PATCH V5 01/33] block: rename bio_for_each_segment* with bio_for_each_page*

It is a tree-wide mechanical replacement since both bio_for_each_segment() and bio_for_each_segment_all() never returns real segment at all, and both just return one page per bvec and deceive us for long time, so fix their names. This is a pre-patch for supporting multipage bvec. Once multipage

[RESEND PATCH V5 05/33] block: introduce bio_for_each_segment()

This helper is used to iterate multipage bvec for bio spliting/merge, and it is required in bio_clone_bioset() too, so introduce it. Signed-off-by: Ming Lei --- include/linux/bio.h | 34 +++--- include/linux/bvec.h | 36

[RESEND PATCH V5 02/33] block: rename rq_for_each_segment as rq_for_each_page

rq_for_each_segment() still deceives us since this helper only returns one page in each bvec, so fixes its name. Signed-off-by: Ming Lei --- Documentation/block/biodoc.txt | 6 +++--- block/blk-core.c | 2 +- drivers/block/floppy.c | 4 ++--

[RESEND PATCH V5 03/33] block: rename bio_segments() with bio_pages()

bio_segments() never returns count of actual segment, just like original bio_for_each_segment(), so rename it as bio_pages(). Signed-off-by: Ming Lei --- block/bio.c| 2 +- block/blk-merge.c | 2 +- drivers/block/loop.c

[RESEND PATCH V5 04/33] block: introduce multipage page bvec helpers

This patch introduces helpers of 'bvec_iter_segment_*' for multipage bvec(segment) support. The introduced interfaces treate one bvec as real multipage segment, for example, .bv_len is the total length of the multipage segment. The existed helpers of bvec_iter_* are interfaces for supporting

[RESEND PATCH V5 01/33] block: rename bio_for_each_segment* with bio_for_each_page*

It is a tree-wide mechanical replacement since both bio_for_each_segment() and bio_for_each_segment_all() never returns real segment at all, and both just return one page per bvec and deceive us for long time, so fix their names. This is a pre-patch for supporting multipage bvec. Once multipage

[RESEND PATCH V5 05/33] block: introduce bio_for_each_segment()

This helper is used to iterate multipage bvec for bio spliting/merge, and it is required in bio_clone_bioset() too, so introduce it. Signed-off-by: Ming Lei --- include/linux/bio.h | 34 +++--- include/linux/bvec.h | 36 2 files

[RESEND PATCH V5 02/33] block: rename rq_for_each_segment as rq_for_each_page

rq_for_each_segment() still deceives us since this helper only returns one page in each bvec, so fixes its name. Signed-off-by: Ming Lei --- Documentation/block/biodoc.txt | 6 +++--- block/blk-core.c | 2 +- drivers/block/floppy.c | 4 ++-- drivers/block/loop.c

[RESEND PATCH V5 03/33] block: rename bio_segments() with bio_pages()

bio_segments() never returns count of actual segment, just like original bio_for_each_segment(), so rename it as bio_pages(). Signed-off-by: Ming Lei --- block/bio.c| 2 +- block/blk-merge.c | 2 +- drivers/block/loop.c | 4 ++--

[RESEND PATCH V5 04/33] block: introduce multipage page bvec helpers

This patch introduces helpers of 'bvec_iter_segment_*' for multipage bvec(segment) support. The introduced interfaces treate one bvec as real multipage segment, for example, .bv_len is the total length of the multipage segment. The existed helpers of bvec_iter_* are interfaces for supporting

[RESEND PATCH V5 00/33] block: support multipage bvec

Hi, This patchset brings multipage bvec into block layer: 1) what is multipage 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 multipage bvec introduced?

[RESEND PATCH V5 00/33] block: support multipage bvec

Hi, This patchset brings multipage bvec into block layer: 1) what is multipage 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 multipage bvec introduced?

Re: [PATCH 2/6] lib/rhashtable: guarantee initial hashtable allocation

On Thu, 24 May 2018, Davidlohr Bueso wrote: size = sizeof(*tbl) + nbuckets * sizeof(tbl->buckets[0]); + if (retry) { + gfp |= __GFP_NOFAIL; + tbl = kzalloc(size, gfp); + } /* fall-through */ + if (gfp != GFP_KERNEL) tbl =

Re: [PATCH 2/6] lib/rhashtable: guarantee initial hashtable allocation

On Thu, 24 May 2018, Davidlohr Bueso wrote: size = sizeof(*tbl) + nbuckets * sizeof(tbl->buckets[0]); + if (retry) { + gfp |= __GFP_NOFAIL; + tbl = kzalloc(size, gfp); + } /* fall-through */ + if (gfp != GFP_KERNEL) tbl =

Re: [GIT PULL] Qualcomm Driver updates for 4.18

Please refrain from applying this pull request. The following patch is going to be removed from the pull request and put into a fixes-for-4.17: firmware: qcom: scm: Fix crash in qcom_scm_call_atomic1() I'll send an amended pull request minus this patch. Regards, Andy On Tue, May 22, 2018 at

Re: [GIT PULL] Qualcomm Driver updates for 4.18

Please refrain from applying this pull request. The following patch is going to be removed from the pull request and put into a fixes-for-4.17: firmware: qcom: scm: Fix crash in qcom_scm_call_atomic1() I'll send an amended pull request minus this patch. Regards, Andy On Tue, May 22, 2018 at

Re: [PATCH v3 3/8] drm/mediatek: add connection from OD1 to RDMA1

Hi, Stu: On Fri, 2018-05-25 at 10:34 +0800, stu.hs...@mediatek.com wrote: > From: Stu Hsieh > > This patch add the connection from OD1 to RDMA1 for ext path. > Reviewed-by: CK Hu > Signed-off-by: Stu Hsieh > --- >

Re: [PATCH v3 3/8] drm/mediatek: add connection from OD1 to RDMA1

Hi, Stu: On Fri, 2018-05-25 at 10:34 +0800, stu.hs...@mediatek.com wrote: > From: Stu Hsieh > > This patch add the connection from OD1 to RDMA1 for ext path. > Reviewed-by: CK Hu > Signed-off-by: Stu Hsieh > --- > drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 3 +++ > 1 file changed, 3

Re: [PATCH v3 2/8] drm/mediatek: support maximum 64 mutex mod

Hi, Stu: On Fri, 2018-05-25 at 10:34 +0800, stu.hs...@mediatek.com wrote: > From: Stu Hsieh > > This patch support that if modules more than 32, > add index more than 31 when using DISP_REG_MUTEX_MOD2 bit > Reviewed-by: CK Hu > Signed-off-by: Stu

Re: [PATCH v3 2/8] drm/mediatek: support maximum 64 mutex mod

Hi, Stu: On Fri, 2018-05-25 at 10:34 +0800, stu.hs...@mediatek.com wrote: > From: Stu Hsieh > > This patch support that if modules more than 32, > add index more than 31 when using DISP_REG_MUTEX_MOD2 bit > Reviewed-by: CK Hu > Signed-off-by: Stu Hsieh > --- >

Re: [PATCH v3 1/8] drm/mediatek: update dt-bindings for mt2712

Hi, Stu: On Fri, 2018-05-25 at 10:34 +0800, stu.hs...@mediatek.com wrote: > From: Stu Hsieh > > Update device tree binding documentation for the display subsystem for > Mediatek MT2712 SoCs. > I've acked v2 of this patch and v3 is the same as v2, so you should keep my

Re: [PATCH v3 1/8] drm/mediatek: update dt-bindings for mt2712

Hi, Stu: On Fri, 2018-05-25 at 10:34 +0800, stu.hs...@mediatek.com wrote: > From: Stu Hsieh > > Update device tree binding documentation for the display subsystem for > Mediatek MT2712 SoCs. > I've acked v2 of this patch and v3 is the same as v2, so you should keep my ack in commit message.

Re: [RFC v5 0/5] virtio: support packed ring

On Fri, May 25, 2018 at 10:31:26AM +0800, Jason Wang wrote: > On 2018年05月22日 16:16, Tiwei Bie wrote: > > Hello everyone, > > > > This RFC implements packed ring support in virtio driver. > > > > Some simple functional tests have been done with Jason's > > packed ring implementation in vhost (RFC

Re: [RFC v5 0/5] virtio: support packed ring

On Fri, May 25, 2018 at 10:31:26AM +0800, Jason Wang wrote: > On 2018年05月22日 16:16, Tiwei Bie wrote: > > Hello everyone, > > > > This RFC implements packed ring support in virtio driver. > > > > Some simple functional tests have been done with Jason's > > packed ring implementation in vhost (RFC

[PATCH] ARM: dts: imx51-zii-rdu1: Make sure SD1_WP is low

Make sure that MX51_PAD_GPIO1_1 does not remain configure as ALT0/SD1_WP (it is out of reset). This is needed because of external pull-up resistor attached to that pad that, when left unchanged, will drive SD1_WP high preventing eSDHC1/eMMC from working correctly. To fix that add a pinmux

[PATCH] ARM: dts: imx51-zii-rdu1: Make sure SD1_WP is low

Make sure that MX51_PAD_GPIO1_1 does not remain configure as ALT0/SD1_WP (it is out of reset). This is needed because of external pull-up resistor attached to that pad that, when left unchanged, will drive SD1_WP high preventing eSDHC1/eMMC from working correctly. To fix that add a pinmux

Re: [GIT PULL] isolation: 1Hz residual tick offloading v4

On Tue, May 22, 2018 at 10:10:19PM +0300, Yauheni Kaliuta wrote: > Hi, Frederic! > > > On Mon, 29 Jan 2018 02:10:26 +0100, Frederic Weisbecker wrote: > > On Wed, Jan 24, 2018 at 10:46:08AM -0500, Luiz Capitulino wrote: > > [...] > > >> Since the 1Hz tick offload worked for you, I must be

Re: [GIT PULL] isolation: 1Hz residual tick offloading v4

On Tue, May 22, 2018 at 10:10:19PM +0300, Yauheni Kaliuta wrote: > Hi, Frederic! > > > On Mon, 29 Jan 2018 02:10:26 +0100, Frederic Weisbecker wrote: > > On Wed, Jan 24, 2018 at 10:46:08AM -0500, Luiz Capitulino wrote: > > [...] > > >> Since the 1Hz tick offload worked for you, I must be

Re: [PATCH] drm/rockchip: vop: fix irq disabled after vop driver probed

Hi Heiko, Sandy, On Fri, May 25, 2018 at 7:07 AM Heiko Stübner wrote: > From: Sandy Huang > The vop irq is shared between vop and iommu and irq probing in the > iommu driver moved to the probe function recently. This can in some > cases lead to a stall if

Re: [PATCH] drm/rockchip: vop: fix irq disabled after vop driver probed

Hi Heiko, Sandy, On Fri, May 25, 2018 at 7:07 AM Heiko Stübner wrote: > From: Sandy Huang > The vop irq is shared between vop and iommu and irq probing in the > iommu driver moved to the probe function recently. This can in some > cases lead to a stall if the irq is triggered while the vop

[PATCH 6/7] dm-snap: remove unnecessary direct_access() stub

This stub was added so that we could use dm-snap with DM_TYPE_DAX_BIO_BASED mode devices. That mode and the transition issues associated with it no longer exist, so we can remove this dead code. Signed-off-by: Ross Zwisler --- drivers/md/dm-snap.c | 8 1

[PATCH 1/7] fs: allow per-device dax status checking for filesystems

From: "Darrick J. Wong" Remove __bdev_dax_supported and change to bdev_dax_supported that takes a bdev parameter. This enables multi-device filesystems like xfs to check that a dax device can work for the particular filesystem. Once that's in place, actually fix all

[PATCH 6/7] dm-snap: remove unnecessary direct_access() stub

This stub was added so that we could use dm-snap with DM_TYPE_DAX_BIO_BASED mode devices. That mode and the transition issues associated with it no longer exist, so we can remove this dead code. Signed-off-by: Ross Zwisler --- drivers/md/dm-snap.c | 8 1 file changed, 8 deletions(-)

[PATCH 1/7] fs: allow per-device dax status checking for filesystems

From: "Darrick J. Wong" Remove __bdev_dax_supported and change to bdev_dax_supported that takes a bdev parameter. This enables multi-device filesystems like xfs to check that a dax device can work for the particular filesystem. Once that's in place, actually fix all the parts of XFS where we

Re: [PATCH v2] ppp: remove the PPPIOCDETACH ioctl

From: Eric Biggers Date: Wed, 23 May 2018 14:37:38 -0700 > From: Eric Biggers > > The PPPIOCDETACH ioctl effectively tries to "close" the given ppp file > before f_count has reached 0, which is fundamentally a bad idea. It > does check 'f_count < 2',

[PATCH 4/7] dm: prevent DAX mounts if not supported

Currently the code in dm_dax_direct_access() only checks whether the target type has a direct_access() operation defined, not whether the underlying block devices all support DAX. This latter property can be seen by looking at whether we set the QUEUE_FLAG_DAX request queue flag when creating the

Re: [PATCH v2] ppp: remove the PPPIOCDETACH ioctl

From: Eric Biggers Date: Wed, 23 May 2018 14:37:38 -0700 > From: Eric Biggers > > The PPPIOCDETACH ioctl effectively tries to "close" the given ppp file > before f_count has reached 0, which is fundamentally a bad idea. It > does check 'f_count < 2', which excludes concurrent operations on

[PATCH 4/7] dm: prevent DAX mounts if not supported

Currently the code in dm_dax_direct_access() only checks whether the target type has a direct_access() operation defined, not whether the underlying block devices all support DAX. This latter property can be seen by looking at whether we set the QUEUE_FLAG_DAX request queue flag when creating the

[PATCH 2/7] dax: change bdev_dax_supported() to support boolean returns

From: Dave Jiang The function return values are confusing with the way the function is named. We expect a true or false return value but it actually returns 0/-errno. This makes the code very confusing. Changing the return values to return a bool where if DAX is supported

[PATCH 2/7] dax: change bdev_dax_supported() to support boolean returns

From: Dave Jiang The function return values are confusing with the way the function is named. We expect a true or false return value but it actually returns 0/-errno. This makes the code very confusing. Changing the return values to return a bool where if DAX is supported then return true and

[PATCH 5/7] dm: remove DM_TYPE_DAX_BIO_BASED dm_queue_mode

The DM_TYPE_DAX_BIO_BASED dm_queue_mode was introduced to prevent DM devices that could possibly support DAX from transitioning into DM devices that cannot support DAX. For example, the following transition will currently fail: dm-linear: [fsdax pmem][fsdax pmem] => [fsdax pmem][fsdax raw]

[PATCH 5/7] dm: remove DM_TYPE_DAX_BIO_BASED dm_queue_mode

The DM_TYPE_DAX_BIO_BASED dm_queue_mode was introduced to prevent DM devices that could possibly support DAX from transitioning into DM devices that cannot support DAX. For example, the following transition will currently fail: dm-linear: [fsdax pmem][fsdax pmem] => [fsdax pmem][fsdax raw]

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