[PATCH v6 63/99] dax: Convert dax_insert_mapping_entry to XArray

From: Matthew Wilcox Signed-off-by: Matthew Wilcox --- fs/dax.c | 18 ++ 1 file changed, 6 insertions(+), 12 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index e6b25ef112f2..494e8fb7a98f 100644 --- a/fs/dax.c +++ b/fs/dax.c @@

[PATCH v6 63/99] dax: Convert dax_insert_mapping_entry to XArray

From: Matthew Wilcox Signed-off-by: Matthew Wilcox --- fs/dax.c | 18 ++ 1 file changed, 6 insertions(+), 12 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index e6b25ef112f2..494e8fb7a98f 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -498,9 +498,9 @@ static void

[PATCH v6 62/99] dax: Convert dax_insert_pfn_mkwrite to XArray

From: Matthew Wilcox Signed-off-by: Matthew Wilcox --- fs/dax.c | 8 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index b66b8c896ed8..e6b25ef112f2 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -1497,21

[PATCH v6 62/99] dax: Convert dax_insert_pfn_mkwrite to XArray

From: Matthew Wilcox Signed-off-by: Matthew Wilcox --- fs/dax.c | 8 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index b66b8c896ed8..e6b25ef112f2 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -1497,21 +1497,21 @@ static int dax_insert_pfn_mkwrite(struct

[PATCH v6 64/99] dax: Convert grab_mapping_entry to XArray

From: Matthew Wilcox Signed-off-by: Matthew Wilcox --- fs/dax.c | 98 +--- 1 file changed, 26 insertions(+), 72 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index

[PATCH v6 65/99] dax: Fix sparse warning

From: Matthew Wilcox sparse doesn't know that follow_pte_pmd() conditionally acquires the ptl, because it's in a separate compilation unit. Move follow_pte_pmd() to mm.h where sparse can see it. Signed-off-by: Matthew Wilcox ---

Re: [PATCH RFC v1] arm64: Handle traps from accessing CNTVCT/CNTFRQ for CONFIG_COMPAT

On Wed, Jan 17, 2018 at 09:03:48AM +, Marc Zyngier wrote: > > So ignoring a condition for a Thumb instruction may cause its IT > > scope shifting. For ARM mode, the only penalty could be two Rts > > getting written -- which shouldn't corrupt userspace execution. > > > > Please correct me if

[PATCH v6 64/99] dax: Convert grab_mapping_entry to XArray

From: Matthew Wilcox Signed-off-by: Matthew Wilcox --- fs/dax.c | 98 +--- 1 file changed, 26 insertions(+), 72 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index 494e8fb7a98f..3eb0cf176d69 100644 --- a/fs/dax.c +++ b/fs/dax.c @@

[PATCH v6 65/99] dax: Fix sparse warning

From: Matthew Wilcox sparse doesn't know that follow_pte_pmd() conditionally acquires the ptl, because it's in a separate compilation unit. Move follow_pte_pmd() to mm.h where sparse can see it. Signed-off-by: Matthew Wilcox --- include/linux/mm.h | 15 ++- mm/memory.c|

Re: [PATCH RFC v1] arm64: Handle traps from accessing CNTVCT/CNTFRQ for CONFIG_COMPAT

On Wed, Jan 17, 2018 at 09:03:48AM +, Marc Zyngier wrote: > > So ignoring a condition for a Thumb instruction may cause its IT > > scope shifting. For ARM mode, the only penalty could be two Rts > > getting written -- which shouldn't corrupt userspace execution. > > > > Please correct me if

[PATCH v6 66/99] page cache: Finish XArray conversion

From: Matthew Wilcox With no more radix tree API users left, we can drop the GFP flags and use xa_init() instead of INIT_RADIX_TREE(). Signed-off-by: Matthew Wilcox --- fs/inode.c | 2 +- include/linux/fs.h | 2 +- mm/swap_state.c| 2

[PATCH v6 66/99] page cache: Finish XArray conversion

From: Matthew Wilcox With no more radix tree API users left, we can drop the GFP flags and use xa_init() instead of INIT_RADIX_TREE(). Signed-off-by: Matthew Wilcox --- fs/inode.c | 2 +- include/linux/fs.h | 2 +- mm/swap_state.c| 2 +- 3 files changed, 3 insertions(+), 3

[PATCH v6 67/99] mm: Convert cgroup writeback to XArray

From: Matthew Wilcox This is a fairly naive conversion, leaving in place the GFP_ATOMIC allocation. By switching the locking around, we could use GFP_KERNEL and probably simplify the error handling. Signed-off-by: Matthew Wilcox ---

[PATCH v6 67/99] mm: Convert cgroup writeback to XArray

From: Matthew Wilcox This is a fairly naive conversion, leaving in place the GFP_ATOMIC allocation. By switching the locking around, we could use GFP_KERNEL and probably simplify the error handling. Signed-off-by: Matthew Wilcox --- include/linux/backing-dev-defs.h | 2 +-

Re: [PATCH v2] r8152: disable RX aggregation on Dell TB16 dock

From: Kai-Heng Feng Date: Tue, 16 Jan 2018 16:46:27 +0800 > r8153 on Dell TB15/16 dock corrupts rx packets. > > This change is suggested by Realtek. They guess that the XHCI controller > doesn't have enough buffer, and their guesswork is correct, once the RX >

Re: [PATCH v2] r8152: disable RX aggregation on Dell TB16 dock

From: Kai-Heng Feng Date: Tue, 16 Jan 2018 16:46:27 +0800 > r8153 on Dell TB15/16 dock corrupts rx packets. > > This change is suggested by Realtek. They guess that the XHCI controller > doesn't have enough buffer, and their guesswork is correct, once the RX > aggregation gets disabled, the

[PATCH v6 26/99] page cache: Convert page cache lookups to XArray

From: Matthew Wilcox Introduce page_cache_pin() to factor out the common logic between the various lookup routines: find_get_entry find_get_entries find_get_pages_range find_get_pages_contig find_get_pages_range_tag find_get_entries_tag filemap_map_pages By using the

[PATCH v6 26/99] page cache: Convert page cache lookups to XArray

From: Matthew Wilcox Introduce page_cache_pin() to factor out the common logic between the various lookup routines: find_get_entry find_get_entries find_get_pages_range find_get_pages_contig find_get_pages_range_tag find_get_entries_tag filemap_map_pages By using the xa_state to control the

[PATCH v6 69/99] brd: Convert to XArray

From: Matthew Wilcox Convert brd_pages from a radix tree to an XArray. Simpler and smaller code; in particular another user of radix_tree_preload is eliminated. Signed-off-by: Matthew Wilcox --- drivers/block/brd.c | 93

[PATCH v6 69/99] brd: Convert to XArray

From: Matthew Wilcox Convert brd_pages from a radix tree to an XArray. Simpler and smaller code; in particular another user of radix_tree_preload is eliminated. Signed-off-by: Matthew Wilcox --- drivers/block/brd.c | 93 - 1 file changed,

Re: [PATCH net-next V3 0/2] tun: allow to attach eBPF filter

From: Jason Wang Date: Tue, 16 Jan 2018 16:31:00 +0800 > Hi all: > > This series tries to implement eBPF socket filter for tun. This could > be used for implementing efficient virtio-net receive filter for > vhost-net. > > Thanks > > Changes from V2: > - fix typo > -

Re: [PATCH net-next V3 0/2] tun: allow to attach eBPF filter

From: Jason Wang Date: Tue, 16 Jan 2018 16:31:00 +0800 > Hi all: > > This series tries to implement eBPF socket filter for tun. This could > be used for implementing efficient virtio-net receive filter for > vhost-net. > > Thanks > > Changes from V2: > - fix typo > - remove unnecessary double

[PATCH v6 68/99] vmalloc: Convert to XArray

From: Matthew Wilcox The radix tree of vmap blocks is simpler to express as an XArray. Saves a couple of hundred bytes of text and eliminates a user of the radix tree preload API. Signed-off-by: Matthew Wilcox --- mm/vmalloc.c | 39

[PATCH v6 68/99] vmalloc: Convert to XArray

From: Matthew Wilcox The radix tree of vmap blocks is simpler to express as an XArray. Saves a couple of hundred bytes of text and eliminates a user of the radix tree preload API. Signed-off-by: Matthew Wilcox --- mm/vmalloc.c | 39 +-- 1 file changed, 13

[PATCH v6 70/99] xfs: Convert m_perag_tree to XArray

From: Matthew Wilcox Getting rid of the m_perag_lock lets us also get rid of the call to radix_tree_preload(). This is a relatively naive conversion; we could improve performance over the radix tree implementation by passing around xa_state pointers instead of indices,

[PATCH v6 70/99] xfs: Convert m_perag_tree to XArray

From: Matthew Wilcox Getting rid of the m_perag_lock lets us also get rid of the call to radix_tree_preload(). This is a relatively naive conversion; we could improve performance over the radix tree implementation by passing around xa_state pointers instead of indices, possibly at the expense

[PATCH v6 71/99] xfs: Convert pag_ici_root to XArray

From: Matthew Wilcox Rename pag_ici_root to pag_ici_xa and use XArray APIs instead of radix tree APIs. Shorter code, typechecking on tag numbers, better error checking in xfs_reclaim_inode(), and eliminates a call to radix_tree_preload(). Signed-off-by: Matthew Wilcox

[PATCH v6 71/99] xfs: Convert pag_ici_root to XArray

From: Matthew Wilcox Rename pag_ici_root to pag_ici_xa and use XArray APIs instead of radix tree APIs. Shorter code, typechecking on tag numbers, better error checking in xfs_reclaim_inode(), and eliminates a call to radix_tree_preload(). Signed-off-by: Matthew Wilcox ---

[PATCH v6 74/99] usb: Convert xhci-mem to XArray

From: Matthew Wilcox The XArray API is a slightly better fit for xhci_insert_segment_mapping() than the radix tree API was. Signed-off-by: Matthew Wilcox --- drivers/usb/host/xhci-mem.c | 68 +++--

[PATCH v6 74/99] usb: Convert xhci-mem to XArray

From: Matthew Wilcox The XArray API is a slightly better fit for xhci_insert_segment_mapping() than the radix tree API was. Signed-off-by: Matthew Wilcox --- drivers/usb/host/xhci-mem.c | 68 +++-- drivers/usb/host/xhci.h | 6 ++-- 2 files changed,

[PATCH] arm64: dts: hikey: Enable HS200 mode on eMMC

According to the hi6220 datasheet, the MMC controller is JEDEC eMMC 4.5 compliant, in addition to supporting a clock of up to 150MHz. The Hikey schematic also indicates the device utilizes 1.8v signaling. Define these parameters in the device tree to enable HS200 mode. Signed-off-by: Ryan Grachek

[PATCH] arm64: dts: hikey: Enable HS200 mode on eMMC

According to the hi6220 datasheet, the MMC controller is JEDEC eMMC 4.5 compliant, in addition to supporting a clock of up to 150MHz. The Hikey schematic also indicates the device utilizes 1.8v signaling. Define these parameters in the device tree to enable HS200 mode. Signed-off-by: Ryan Grachek

Re: [REGRESSION][v4.14.y][v4.15] x86/intel_rdt/cqm: Improve limbo list processing

On 01/16/2018 01:59 PM, Thomas Gleixner wrote: > On Tue, 16 Jan 2018, Yu, Fenghua wrote: >>> From: Thomas Gleixner [mailto:t...@linutronix.de] >> Is this a Haswell specific issue? >> >> I run the following test forever without issue on Broadwell and 4.15.0-rc6 >> with rdt mounted: >> for ((;;))

Re: [REGRESSION][v4.14.y][v4.15] x86/intel_rdt/cqm: Improve limbo list processing

On 01/16/2018 01:59 PM, Thomas Gleixner wrote: > On Tue, 16 Jan 2018, Yu, Fenghua wrote: >>> From: Thomas Gleixner [mailto:t...@linutronix.de] >> Is this a Haswell specific issue? >> >> I run the following test forever without issue on Broadwell and 4.15.0-rc6 >> with rdt mounted: >> for ((;;))

[PATCH v6 72/99] xfs: Convert xfs dquot to XArray

From: Matthew Wilcox This is a pretty straight-forward conversion. Signed-off-by: Matthew Wilcox --- fs/xfs/xfs_dquot.c | 38 +- fs/xfs/xfs_qm.c| 36 ++-- fs/xfs/xfs_qm.h

[PATCH v6 72/99] xfs: Convert xfs dquot to XArray

From: Matthew Wilcox This is a pretty straight-forward conversion. Signed-off-by: Matthew Wilcox --- fs/xfs/xfs_dquot.c | 38 +- fs/xfs/xfs_qm.c| 36 ++-- fs/xfs/xfs_qm.h| 18 +- 3 files changed, 48

Re: [GIT PULL] x86 fixes

On Wed, Jan 17, 2018 at 7:41 AM, Ingo Molnar wrote: > > - A kdump fix > > out-of-topic modifications in x86-urgent-for-linus: > - > include/linux/crash_core.h # 9f15b9120f56: kdump: Write the correct > add >

Re: [GIT PULL] x86 fixes

On Wed, Jan 17, 2018 at 7:41 AM, Ingo Molnar wrote: > > - A kdump fix > > out-of-topic modifications in x86-urgent-for-linus: > - > include/linux/crash_core.h # 9f15b9120f56: kdump: Write the correct > add > kernel/crash_core.c

[PATCH v6 75/99] md: Convert raid5-cache to XArray

From: Matthew Wilcox This is the first user of the radix tree I've converted which was storing numbers rather than pointers. I'm fairly pleased with how well it came out. There's less boiler-plate involved than there was with the radix tree, so that's a win. It does

[PATCH v6 75/99] md: Convert raid5-cache to XArray

From: Matthew Wilcox This is the first user of the radix tree I've converted which was storing numbers rather than pointers. I'm fairly pleased with how well it came out. There's less boiler-plate involved than there was with the radix tree, so that's a win. It does use the advanced API, and

[PATCH v6 73/99] xfs: Convert mru cache to XArray

From: Matthew Wilcox This eliminates a call to radix_tree_preload(). Signed-off-by: Matthew Wilcox --- fs/xfs/xfs_mru_cache.c | 72 +++--- 1 file changed, 33 insertions(+), 39 deletions(-) diff --git

[PATCH v6 73/99] xfs: Convert mru cache to XArray

From: Matthew Wilcox This eliminates a call to radix_tree_preload(). Signed-off-by: Matthew Wilcox --- fs/xfs/xfs_mru_cache.c | 72 +++--- 1 file changed, 33 insertions(+), 39 deletions(-) diff --git a/fs/xfs/xfs_mru_cache.c

[PATCH v6 77/99] fscache: Convert to XArray

From: Matthew Wilcox Removes another user of radix_tree_preload(). Signed-off-by: Matthew Wilcox --- fs/fscache/cookie.c | 6 +- fs/fscache/internal.h | 2 +- fs/fscache/object.c | 2 +- fs/fscache/page.c | 152

[PATCH v6 77/99] fscache: Convert to XArray

From: Matthew Wilcox Removes another user of radix_tree_preload(). Signed-off-by: Matthew Wilcox --- fs/fscache/cookie.c | 6 +- fs/fscache/internal.h | 2 +- fs/fscache/object.c | 2 +- fs/fscache/page.c | 152 +---

[PATCH v6 76/99] irqdomain: Convert to XArray

From: Matthew Wilcox In a non-critical path, irqdomain wants to know how many entries are stored in the xarray, so add xa_count(). This is a pretty straightforward conversion; mostly just removing now-redundant locking. The only thing of note is just how much simpler

[PATCH v6 76/99] irqdomain: Convert to XArray

From: Matthew Wilcox In a non-critical path, irqdomain wants to know how many entries are stored in the xarray, so add xa_count(). This is a pretty straightforward conversion; mostly just removing now-redundant locking. The only thing of note is just how much simpler irq_domain_fix_revmap()

[PATCH v6 79/99] blk-cgroup: Convert to XArray

From: Matthew Wilcox This call to radix_tree_preload is awkward. At the point of allocation, we're under not only a local lock, but also under the queue lock. So we can't back out, drop the lock and retry the allocation. Replace this preload call with a call to

[PATCH v6 79/99] blk-cgroup: Convert to XArray

From: Matthew Wilcox This call to radix_tree_preload is awkward. At the point of allocation, we're under not only a local lock, but also under the queue lock. So we can't back out, drop the lock and retry the allocation. Replace this preload call with a call to xa_reserve() which will ensure

[PATCH v6 78/99] sh: intc: Convert to XArray

From: Matthew Wilcox The radix tree was being protected by a raw spinlock. I believe that was not necessary, and the new internal regular spinlock will be adequate for this array. Signed-off-by: Matthew Wilcox --- drivers/sh/intc/core.c |

[PATCH v6 78/99] sh: intc: Convert to XArray

From: Matthew Wilcox The radix tree was being protected by a raw spinlock. I believe that was not necessary, and the new internal regular spinlock will be adequate for this array. Signed-off-by: Matthew Wilcox --- drivers/sh/intc/core.c | 9 ++ drivers/sh/intc/internals.h | 5 ++--

[PATCH v6 85/99] btrfs: Remove unused spinlock

From: Matthew Wilcox The reada_lock in struct btrfs_device was only initialised, and not actually used. That's good because there's another lock also called reada_lock in the btrfs_fs_info that was quite heavily used. Remove this one. Signed-off-by: Matthew Wilcox

[PATCH v6 84/99] btrfs: Convert fs_roots_radix to XArray

From: Matthew Wilcox Most of the gang lookups being done can be expressed just as efficiently and somewhat more naturally as xa_for_each() loops. I opted not to change the one in btrfs_cleanup_fs_roots() as it's using SRCU which is subtle and quick to anger.

[PATCH v6 85/99] btrfs: Remove unused spinlock

From: Matthew Wilcox The reada_lock in struct btrfs_device was only initialised, and not actually used. That's good because there's another lock also called reada_lock in the btrfs_fs_info that was quite heavily used. Remove this one. Signed-off-by: Matthew Wilcox --- fs/btrfs/volumes.c | 1

[PATCH v6 84/99] btrfs: Convert fs_roots_radix to XArray

From: Matthew Wilcox Most of the gang lookups being done can be expressed just as efficiently and somewhat more naturally as xa_for_each() loops. I opted not to change the one in btrfs_cleanup_fs_roots() as it's using SRCU which is subtle and quick to anger. Signed-off-by: Matthew Wilcox ---

[PATCH v6 28/99] page cache: Remove stray radix comment

From: Matthew Wilcox Signed-off-by: Matthew Wilcox --- mm/filemap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/filemap.c b/mm/filemap.c index d2a0031d61f5..2536fcacb5bc 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@

[PATCH v6 83/99] hwspinlock: Convert to XArray

From: Matthew Wilcox I had to mess with the locking a bit as I converted the code from a mutex to the xa_lock. Signed-off-by: Matthew Wilcox --- drivers/hwspinlock/hwspinlock_core.c | 151 --- 1 file changed, 52

Re: [RFC 1/2] softirq: Defer net rx/tx processing to ksoftirqd context

From: Mike Galbraith Date: Fri, 12 Jan 2018 19:44:30 +0100 > On Fri, 2018-01-12 at 19:15 +0100, Mike Galbraith wrote: >> On Fri, 2018-01-12 at 09:51 -0800, Linus Torvalds wrote: >> > On Fri, Jan 12, 2018 at 9:44 AM, Mike Galbraith wrote: >> > > >> > > Nah, a

[PATCH v6 28/99] page cache: Remove stray radix comment

From: Matthew Wilcox Signed-off-by: Matthew Wilcox --- mm/filemap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/filemap.c b/mm/filemap.c index d2a0031d61f5..2536fcacb5bc 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2606,7 +2606,7 @@ static struct page

[PATCH v6 83/99] hwspinlock: Convert to XArray

From: Matthew Wilcox I had to mess with the locking a bit as I converted the code from a mutex to the xa_lock. Signed-off-by: Matthew Wilcox --- drivers/hwspinlock/hwspinlock_core.c | 151 --- 1 file changed, 52 insertions(+), 99 deletions(-) diff --git

Re: [RFC 1/2] softirq: Defer net rx/tx processing to ksoftirqd context

From: Mike Galbraith Date: Fri, 12 Jan 2018 19:44:30 +0100 > On Fri, 2018-01-12 at 19:15 +0100, Mike Galbraith wrote: >> On Fri, 2018-01-12 at 09:51 -0800, Linus Torvalds wrote: >> > On Fri, Jan 12, 2018 at 9:44 AM, Mike Galbraith wrote: >> > > >> > > Nah, a misunderstanding happened. RT that

[PATCH v6 88/99] btrfs: Convert reada_tree to XArray

From: Matthew Wilcox Rename reada_tree to reada_array. Use the xa_lock in reada_array to replace reada_lock. This has to use a nested spinlock as we take the xa_lock of the reada_extents and reada_zones xarrays while holding the reada_lock. Signed-off-by: Matthew

[PATCH v6 88/99] btrfs: Convert reada_tree to XArray

From: Matthew Wilcox Rename reada_tree to reada_array. Use the xa_lock in reada_array to replace reada_lock. This has to use a nested spinlock as we take the xa_lock of the reada_extents and reada_zones xarrays while holding the reada_lock. Signed-off-by: Matthew Wilcox --- fs/btrfs/ctree.h

[PATCH v6 87/99] btrfs: Convert reada_extents to XArray

From: Matthew Wilcox Straightforward conversion. Signed-off-by: Matthew Wilcox --- fs/btrfs/reada.c | 32 +--- fs/btrfs/volumes.c | 2 +- fs/btrfs/volumes.h | 2 +- 3 files changed, 19 insertions(+), 17

[PATCH v6 87/99] btrfs: Convert reada_extents to XArray

From: Matthew Wilcox Straightforward conversion. Signed-off-by: Matthew Wilcox --- fs/btrfs/reada.c | 32 +--- fs/btrfs/volumes.c | 2 +- fs/btrfs/volumes.h | 2 +- 3 files changed, 19 insertions(+), 17 deletions(-) diff --git a/fs/btrfs/reada.c

[PATCH v6 86/99] btrfs: Convert reada_zones to XArray

From: Matthew Wilcox The use of the reada_lock means we have to use the xa_reserve() API. If we can avoid using reada_lock to protect this xarray, we can drop the use of that function. Signed-off-by: Matthew Wilcox --- fs/btrfs/reada.c | 54

[PATCH v6 86/99] btrfs: Convert reada_zones to XArray

From: Matthew Wilcox The use of the reada_lock means we have to use the xa_reserve() API. If we can avoid using reada_lock to protect this xarray, we can drop the use of that function. Signed-off-by: Matthew Wilcox --- fs/btrfs/reada.c | 54

[PATCH v6 90/99] btrfs: Convert delayed_nodes_tree to XArray

From: Matthew Wilcox Rename it to just 'delayed_nodes' and remove it from the protection of btrfs_root->inode_lock. Signed-off-by: Matthew Wilcox --- fs/btrfs/ctree.h | 8 +++--- fs/btrfs/delayed-inode.c | 65

[PATCH v6 90/99] btrfs: Convert delayed_nodes_tree to XArray

From: Matthew Wilcox Rename it to just 'delayed_nodes' and remove it from the protection of btrfs_root->inode_lock. Signed-off-by: Matthew Wilcox --- fs/btrfs/ctree.h | 8 +++--- fs/btrfs/delayed-inode.c | 65 fs/btrfs/disk-io.c

[PATCH v6 89/99] btrfs: Convert buffer_radix to XArray

From: Matthew Wilcox Eliminate the buffer_lock as the internal xa_lock provides all the necessary protection. We can remove the radix_tree_preload calls, but I can't find a good way to use the 'exists' result from xa_cmpxchg(). We could resort to the advanced API to

[PATCH v6 89/99] btrfs: Convert buffer_radix to XArray

From: Matthew Wilcox Eliminate the buffer_lock as the internal xa_lock provides all the necessary protection. We can remove the radix_tree_preload calls, but I can't find a good way to use the 'exists' result from xa_cmpxchg(). We could resort to the advanced API to improve this, but it's a

[PATCH v6 92/99] f2fs: Convert pids radix tree to XArray

From: Matthew Wilcox The XArray API works out rather well for this user. Signed-off-by: Matthew Wilcox --- fs/f2fs/super.c | 2 -- fs/f2fs/trace.c | 60 - fs/f2fs/trace.h | 2 -- 3 files

[PATCH v6 91/99] btrfs: Convert name_cache to XArray

From: Matthew Wilcox This is a very straightforward conversion. The handling of collisions in the namecache could be better handled with an hlist, but that's a patch for another day. Signed-off-by: Matthew Wilcox --- fs/btrfs/send.c | 19

Re: [PATCH v5 00/17] ASoC: fsl_ssi: Clean up - program flow level

On 17.01.2018 21:02, Nicolin Chen wrote: > On Wed, Jan 17, 2018 at 08:38:48PM +0100, Maciej S. Szmigiero wrote: > >> However, I have a small nitpick regarding a comment newly added in >> this version of patch 16: >> +/* >> + * Do not set SSI dev as the parent of AC97 CODEC

[PATCH v6 92/99] f2fs: Convert pids radix tree to XArray

From: Matthew Wilcox The XArray API works out rather well for this user. Signed-off-by: Matthew Wilcox --- fs/f2fs/super.c | 2 -- fs/f2fs/trace.c | 60 - fs/f2fs/trace.h | 2 -- 3 files changed, 4 insertions(+), 60 deletions(-) diff

[PATCH v6 91/99] btrfs: Convert name_cache to XArray

From: Matthew Wilcox This is a very straightforward conversion. The handling of collisions in the namecache could be better handled with an hlist, but that's a patch for another day. Signed-off-by: Matthew Wilcox --- fs/btrfs/send.c | 19 +-- 1 file changed, 9 insertions(+),

Re: [PATCH v5 00/17] ASoC: fsl_ssi: Clean up - program flow level

On 17.01.2018 21:02, Nicolin Chen wrote: > On Wed, Jan 17, 2018 at 08:38:48PM +0100, Maciej S. Szmigiero wrote: > >> However, I have a small nitpick regarding a comment newly added in >> this version of patch 16: >> +/* >> + * Do not set SSI dev as the parent of AC97 CODEC

[PATCH v6 94/99] f2fs: Convert extent_tree_root to XArray

From: Matthew Wilcox Rename it to extent_array and use the xa_lock in place of the extent_tree_lock mutex. Signed-off-by: Matthew Wilcox --- fs/f2fs/extent_cache.c | 59 +- fs/f2fs/f2fs.h |

[PATCH v6 93/99] f2fs: Convert ino_root to XArray

From: Matthew Wilcox I did a fairly major rewrite of __add_ino_entry(); please check carefully. Also, we can remove ino_list unless it's important to write out orphan inodes in the order they were orphaned. It may also make more sense to combine the array of

[PATCH v6 94/99] f2fs: Convert extent_tree_root to XArray

From: Matthew Wilcox Rename it to extent_array and use the xa_lock in place of the extent_tree_lock mutex. Signed-off-by: Matthew Wilcox --- fs/f2fs/extent_cache.c | 59 +- fs/f2fs/f2fs.h | 3 +-- 2 files changed, 30 insertions(+), 32

[PATCH v6 93/99] f2fs: Convert ino_root to XArray

From: Matthew Wilcox I did a fairly major rewrite of __add_ino_entry(); please check carefully. Also, we can remove ino_list unless it's important to write out orphan inodes in the order they were orphaned. It may also make more sense to combine the array of inode_management structures into a

[PATCH v6 99/99] null_blk: Convert to XArray

From: Matthew Wilcox We can probably avoid the call to xa_reserve() by changing the locking, but I didn't feel confident enough to do that. Signed-off-by: Matthew Wilcox --- drivers/block/null_blk.c | 87

[PATCH v6 99/99] null_blk: Convert to XArray

From: Matthew Wilcox We can probably avoid the call to xa_reserve() by changing the locking, but I didn't feel confident enough to do that. Signed-off-by: Matthew Wilcox --- drivers/block/null_blk.c | 87 +--- 1 file changed, 38 insertions(+), 49

[PATCH v6 98/99] qrtr: Convert to XArray

From: Matthew Wilcox Moved the kref protection under the xa_lock too. Signed-off-by: Matthew Wilcox --- net/qrtr/qrtr.c | 21 +++-- 1 file changed, 11 insertions(+), 10 deletions(-) diff --git a/net/qrtr/qrtr.c b/net/qrtr/qrtr.c

[PATCH v6 98/99] qrtr: Convert to XArray

From: Matthew Wilcox Moved the kref protection under the xa_lock too. Signed-off-by: Matthew Wilcox --- net/qrtr/qrtr.c | 21 +++-- 1 file changed, 11 insertions(+), 10 deletions(-) diff --git a/net/qrtr/qrtr.c b/net/qrtr/qrtr.c index 77ab05e23001..7de9a06d2aa2 100644 ---

[PATCH v6 97/99] xen: Convert pvcalls-back to XArray

From: Matthew Wilcox This is a straightforward conversion. Signed-off-by: Matthew Wilcox --- drivers/xen/pvcalls-back.c | 51 ++ 1 file changed, 15 insertions(+), 36 deletions(-) diff --git

[PATCH v6 97/99] xen: Convert pvcalls-back to XArray

From: Matthew Wilcox This is a straightforward conversion. Signed-off-by: Matthew Wilcox --- drivers/xen/pvcalls-back.c | 51 ++ 1 file changed, 15 insertions(+), 36 deletions(-) diff --git a/drivers/xen/pvcalls-back.c b/drivers/xen/pvcalls-back.c

[PATCH v6 96/99] dma-debug: Convert to XArray

From: Matthew Wilcox This is an unusual way to use the xarray tags. If any other users come up, we can add an xas_get_tags() / xas_set_tags() API, but until then I don't want to encourage this kind of abuse. Signed-off-by: Matthew Wilcox ---

[PATCH v6 95/99] f2fs: Convert gclist.iroot to XArray

From: Matthew Wilcox Straightforward conversion. Signed-off-by: Matthew Wilcox --- fs/f2fs/gc.c | 14 +++--- fs/f2fs/gc.h | 2 +- 2 files changed, 8 insertions(+), 8 deletions(-) diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index

[PATCH v6 96/99] dma-debug: Convert to XArray

From: Matthew Wilcox This is an unusual way to use the xarray tags. If any other users come up, we can add an xas_get_tags() / xas_set_tags() API, but until then I don't want to encourage this kind of abuse. Signed-off-by: Matthew Wilcox --- lib/dma-debug.c | 105

[PATCH v6 95/99] f2fs: Convert gclist.iroot to XArray

From: Matthew Wilcox Straightforward conversion. Signed-off-by: Matthew Wilcox --- fs/f2fs/gc.c | 14 +++--- fs/f2fs/gc.h | 2 +- 2 files changed, 8 insertions(+), 8 deletions(-) diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index aac1e02f75df..2b33068dc36b 100644 --- a/fs/f2fs/gc.c +++

[PATCH v6 80/99] blk-ioc: Convert to XArray

From: Matthew Wilcox Skip converting the lock to use xa_lock; I think this code can live with the double-locking. Signed-off-by: Matthew Wilcox --- block/blk-ioc.c | 13 +++-- include/linux/iocontext.h | 6 +++--- 2 files

[PATCH v6 80/99] blk-ioc: Convert to XArray

From: Matthew Wilcox Skip converting the lock to use xa_lock; I think this code can live with the double-locking. Signed-off-by: Matthew Wilcox --- block/blk-ioc.c | 13 +++-- include/linux/iocontext.h | 6 +++--- 2 files changed, 10 insertions(+), 9 deletions(-) diff

[PATCH v6 81/99] i915: Convert handles_vma to XArray

From: Matthew Wilcox Straightforward conversion. Signed-off-by: Matthew Wilcox --- drivers/gpu/drm/i915/i915_gem.c | 2 +- drivers/gpu/drm/i915/i915_gem_context.c | 12 +--- drivers/gpu/drm/i915/i915_gem_context.h

[PATCH v6 81/99] i915: Convert handles_vma to XArray

From: Matthew Wilcox Straightforward conversion. Signed-off-by: Matthew Wilcox --- drivers/gpu/drm/i915/i915_gem.c | 2 +- drivers/gpu/drm/i915/i915_gem_context.c | 12 +--- drivers/gpu/drm/i915/i915_gem_context.h | 4 ++--

[PATCH v6 82/99] s390: Convert gmap to XArray

From: Matthew Wilcox The three radix trees in gmap are all converted to the XArray. This is another case where the multiple locks held mandates the use of the xa_reserve() API. The gmap_insert_rmap() function is considerably simplified by using the advanced API;

[PATCH v6 82/99] s390: Convert gmap to XArray

From: Matthew Wilcox The three radix trees in gmap are all converted to the XArray. This is another case where the multiple locks held mandates the use of the xa_reserve() API. The gmap_insert_rmap() function is considerably simplified by using the advanced API; gmap_radix_tree_free() turns out

[PATCH v6 01/99] xarray: Add the xa_lock to the radix_tree_root

From: Matthew Wilcox This results in no change in structure size on 64-bit x86 as it fits in the padding between the gfp_t and the void *. Initialising the spinlock requires a name for the benefit of lockdep, so RADIX_TREE_INIT() now needs to know the name of the radix

[PATCH v6 01/99] xarray: Add the xa_lock to the radix_tree_root

From: Matthew Wilcox This results in no change in structure size on 64-bit x86 as it fits in the padding between the gfp_t and the void *. Initialising the spinlock requires a name for the benefit of lockdep, so RADIX_TREE_INIT() now needs to know the name of the radix tree it's initialising,

[PATCH v2 1/4] dt-bindings: firmware: Add bindings for ZynqMP firmware

Add documentation to describe Xilinx ZynqMP firmware driver bindings. Firmware driver provides an interface to firmware APIs. Interface APIs can be used by any driver to communicate to PMUFW (Platform Management Unit). Signed-off-by: Jolly Shah Signed-off-by: Rajan Vaja

[PATCH v2 1/4] dt-bindings: firmware: Add bindings for ZynqMP firmware

Add documentation to describe Xilinx ZynqMP firmware driver bindings. Firmware driver provides an interface to firmware APIs. Interface APIs can be used by any driver to communicate to PMUFW (Platform Management Unit). Signed-off-by: Jolly Shah Signed-off-by: Rajan Vaja ---

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