[PATCH v4 28/73] 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 9e6158cfbaeb..79d0731b8762 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@

[PATCH v4 42/73] shmem: Convert shmem_confirm_swap to XArray

From: Matthew Wilcox xa_load has its own RCU locking, so we can eliminate it here. Signed-off-by: Matthew Wilcox --- mm/shmem.c | 7 +-- 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/mm/shmem.c b/mm/shmem.c index

[PATCH v4 28/73] 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 9e6158cfbaeb..79d0731b8762 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2601,7 +2601,7 @@ static struct page

[PATCH v4 42/73] shmem: Convert shmem_confirm_swap to XArray

From: Matthew Wilcox xa_load has its own RCU locking, so we can eliminate it here. Signed-off-by: Matthew Wilcox --- mm/shmem.c | 7 +-- 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/mm/shmem.c b/mm/shmem.c index fad6c9e7402e..654f367aca90 100644 --- a/mm/shmem.c +++

[PATCH v4 44/73] shmem: Convert shmem_tag_pins to XArray

From: Matthew Wilcox Simplify the locking by taking the spinlock while we walk the tree on the assumption that many acquires and releases of the lock will be worse than holding the lock for a (potentially) long time. We could replicate the same locking behaviour with the

[PATCH v4 44/73] shmem: Convert shmem_tag_pins to XArray

From: Matthew Wilcox Simplify the locking by taking the spinlock while we walk the tree on the assumption that many acquires and releases of the lock will be worse than holding the lock for a (potentially) long time. We could replicate the same locking behaviour with the xarray, but would have

[PATCH v4 40/73] pagevec: Use xa_tag_t

From: Matthew Wilcox Removes sparse warnings. Signed-off-by: Matthew Wilcox --- fs/btrfs/extent_io.c| 4 ++-- fs/ext4/inode.c | 2 +- fs/f2fs/data.c | 2 +- fs/gfs2/aops.c | 2 +- include/linux/pagevec.h | 8

[PATCH v4 40/73] pagevec: Use xa_tag_t

From: Matthew Wilcox Removes sparse warnings. Signed-off-by: Matthew Wilcox --- fs/btrfs/extent_io.c| 4 ++-- fs/ext4/inode.c | 2 +- fs/f2fs/data.c | 2 +- fs/gfs2/aops.c | 2 +- include/linux/pagevec.h | 8 +--- mm/swap.c | 4 ++-- 6 files

Re: [PATCH] ACPI / APEI: remove redundant variables len and node_len

On Tuesday, November 28, 2017 11:51:10 AM CET Borislav Petkov wrote: > On Sun, Oct 15, 2017 at 10:24:54PM +0100, Colin King wrote: > > From: Colin Ian King > > > > Variables len and node_len are redundant and can be removed. Cleans > > up clang warning: node_len =

Re: [PATCH] ACPI / APEI: remove redundant variables len and node_len

On Tuesday, November 28, 2017 11:51:10 AM CET Borislav Petkov wrote: > On Sun, Oct 15, 2017 at 10:24:54PM +0100, Colin King wrote: > > From: Colin Ian King > > > > Variables len and node_len are redundant and can be removed. Cleans > > up clang warning: node_len = GHES_ESTATUS_NODE_LEN(len); > >

[PATCH v4 37/73] mm: Convert huge_memory to XArray

From: Matthew Wilcox Quite a straightforward conversion. Signed-off-by: Matthew Wilcox --- mm/huge_memory.c | 19 --- 1 file changed, 8 insertions(+), 11 deletions(-) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index

[PATCH v4 43/73] shmem: Convert find_swap_entry to XArray

From: Matthew Wilcox This is a 1:1 conversion. Signed-off-by: Matthew Wilcox --- mm/shmem.c | 23 +++ 1 file changed, 11 insertions(+), 12 deletions(-) diff --git a/mm/shmem.c b/mm/shmem.c index 654f367aca90..ce285ae635ea

[PATCH v4 36/73] mm: Convert page migration to XArray

From: Matthew Wilcox Signed-off-by: Matthew Wilcox --- mm/migrate.c | 40 1 file changed, 16 insertions(+), 24 deletions(-) diff --git a/mm/migrate.c b/mm/migrate.c index 59f18c571120..7122fec9b075 100644

[PATCH v4 37/73] mm: Convert huge_memory to XArray

From: Matthew Wilcox Quite a straightforward conversion. Signed-off-by: Matthew Wilcox --- mm/huge_memory.c | 19 --- 1 file changed, 8 insertions(+), 11 deletions(-) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 28909c475ee5..5a41b00d86bd 100644 ---

[PATCH v4 43/73] shmem: Convert find_swap_entry to XArray

From: Matthew Wilcox This is a 1:1 conversion. Signed-off-by: Matthew Wilcox --- mm/shmem.c | 23 +++ 1 file changed, 11 insertions(+), 12 deletions(-) diff --git a/mm/shmem.c b/mm/shmem.c index 654f367aca90..ce285ae635ea 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@

[PATCH v4 36/73] mm: Convert page migration to XArray

From: Matthew Wilcox Signed-off-by: Matthew Wilcox --- mm/migrate.c | 40 1 file changed, 16 insertions(+), 24 deletions(-) diff --git a/mm/migrate.c b/mm/migrate.c index 59f18c571120..7122fec9b075 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -322,7

[PATCH v4 41/73] shmem: Convert replace to XArray

From: Matthew Wilcox shmem_radix_tree_replace() is renamed to shmem_xa_replace() and converted to use the XArray API. Signed-off-by: Matthew Wilcox --- mm/shmem.c | 22 -- 1 file changed, 8 insertions(+), 14 deletions(-)

[PATCH v4 39/73] mm: Convert khugepaged_scan_shmem to XArray

From: Matthew Wilcox Slightly shorter and easier to read code. Signed-off-by: Matthew Wilcox --- mm/khugepaged.c | 17 + 1 file changed, 5 insertions(+), 12 deletions(-) diff --git a/mm/khugepaged.c b/mm/khugepaged.c index

[PATCH v4 41/73] shmem: Convert replace to XArray

From: Matthew Wilcox shmem_radix_tree_replace() is renamed to shmem_xa_replace() and converted to use the XArray API. Signed-off-by: Matthew Wilcox --- mm/shmem.c | 22 -- 1 file changed, 8 insertions(+), 14 deletions(-) diff --git a/mm/shmem.c b/mm/shmem.c index

[PATCH v4 39/73] mm: Convert khugepaged_scan_shmem to XArray

From: Matthew Wilcox Slightly shorter and easier to read code. Signed-off-by: Matthew Wilcox --- mm/khugepaged.c | 17 + 1 file changed, 5 insertions(+), 12 deletions(-) diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 9f49d0cd61c2..15f1b2d81a69 100644 ---

[PATCH v4 47/73] shmem: Convert shmem_alloc_hugepage to XArray

From: Matthew Wilcox xa_find() is a slightly easier API to use than radix_tree_gang_lookup_slot() because it contains its own RCU locking. Signed-off-by: Matthew Wilcox --- mm/shmem.c | 13 +++-- 1 file changed, 3 insertions(+), 10

[PATCH v4 47/73] shmem: Convert shmem_alloc_hugepage to XArray

From: Matthew Wilcox xa_find() is a slightly easier API to use than radix_tree_gang_lookup_slot() because it contains its own RCU locking. Signed-off-by: Matthew Wilcox --- mm/shmem.c | 13 +++-- 1 file changed, 3 insertions(+), 10 deletions(-) diff --git a/mm/shmem.c b/mm/shmem.c

[PATCH v4 15/73] xarray: Add xa_get_entries, xa_get_tagged and xa_get_maybe_tag

From: Matthew Wilcox These functions allow a range of xarray entries to be extracted into a compact normal array. Signed-off-by: Matthew Wilcox --- include/linux/xarray.h | 27 lib/xarray.c | 88

[PATCH v4 52/73] fs: Convert buffer to XArray

From: Matthew Wilcox Mostly comment fixes, but one use of __xa_set_tag. Signed-off-by: Matthew Wilcox --- fs/buffer.c | 14 +++--- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/fs/buffer.c b/fs/buffer.c index

[PATCH v4 50/73] shmem: Comment fixups

From: Matthew Wilcox Remove the last mentions of radix tree from various comments. Signed-off-by: Matthew Wilcox --- mm/shmem.c | 14 +++--- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/mm/shmem.c b/mm/shmem.c index

[PATCH v4 52/73] fs: Convert buffer to XArray

From: Matthew Wilcox Mostly comment fixes, but one use of __xa_set_tag. Signed-off-by: Matthew Wilcox --- fs/buffer.c | 14 +++--- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/fs/buffer.c b/fs/buffer.c index 33c08624d45b..986b50b0fd50 100644 --- a/fs/buffer.c +++

[PATCH v4 50/73] shmem: Comment fixups

From: Matthew Wilcox Remove the last mentions of radix tree from various comments. Signed-off-by: Matthew Wilcox --- mm/shmem.c | 14 +++--- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/mm/shmem.c b/mm/shmem.c index 01102e2e0ef3..090937922c1d 100644 --- a/mm/shmem.c

[PATCH v4 15/73] xarray: Add xa_get_entries, xa_get_tagged and xa_get_maybe_tag

From: Matthew Wilcox These functions allow a range of xarray entries to be extracted into a compact normal array. Signed-off-by: Matthew Wilcox --- include/linux/xarray.h | 27 lib/xarray.c | 88 ++ 2 files changed,

[PATCH v4 48/73] shmem: Convert shmem_free_swap to XArray

From: Matthew Wilcox This is a perfect use for xa_cmpxchg(). Note the use of 0 for GFP flags; we won't be allocating memory. Signed-off-by: Matthew Wilcox --- mm/shmem.c | 7 ++- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git

[PATCH v4 48/73] shmem: Convert shmem_free_swap to XArray

From: Matthew Wilcox This is a perfect use for xa_cmpxchg(). Note the use of 0 for GFP flags; we won't be allocating memory. Signed-off-by: Matthew Wilcox --- mm/shmem.c | 7 ++- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/mm/shmem.c b/mm/shmem.c index

[PATCH v4 49/73] shmem: Convert shmem_partial_swap_usage to XArray

From: Matthew Wilcox Simpler code because the xarray takes care of things like the limit and dereferencing the slot. Signed-off-by: Matthew Wilcox --- mm/shmem.c | 18 +++--- 1 file changed, 3 insertions(+), 15 deletions(-) diff

[PATCH v4 49/73] shmem: Convert shmem_partial_swap_usage to XArray

From: Matthew Wilcox Simpler code because the xarray takes care of things like the limit and dereferencing the slot. Signed-off-by: Matthew Wilcox --- mm/shmem.c | 18 +++--- 1 file changed, 3 insertions(+), 15 deletions(-) diff --git a/mm/shmem.c b/mm/shmem.c index

[PATCH v4 57/73] dax: Convert dax_unlock_mapping_entry to XArray

From: Matthew Wilcox Replace slot_locked() with dax_locked() and inline unlock_slot() into its only caller. Signed-off-by: Matthew Wilcox --- fs/dax.c | 50 -- 1 file changed, 16 insertions(+), 34

[PATCH v4 58/73] dax: Convert lock_slot to XArray

From: Matthew Wilcox Signed-off-by: Matthew Wilcox --- fs/dax.c | 25 + 1 file changed, 13 insertions(+), 12 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index 03bfa599f75c..d2007a17d257 100644 --- a/fs/dax.c +++

[PATCH v4 58/73] dax: Convert lock_slot to XArray

From: Matthew Wilcox Signed-off-by: Matthew Wilcox --- fs/dax.c | 25 + 1 file changed, 13 insertions(+), 12 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index 03bfa599f75c..d2007a17d257 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -188,15 +188,13 @@ static void

[PATCH v4 57/73] dax: Convert dax_unlock_mapping_entry to XArray

From: Matthew Wilcox Replace slot_locked() with dax_locked() and inline unlock_slot() into its only caller. Signed-off-by: Matthew Wilcox --- fs/dax.c | 50 -- 1 file changed, 16 insertions(+), 34 deletions(-) diff --git a/fs/dax.c b/fs/dax.c

[PATCH v4 53/73] fs: Convert writeback to XArray

From: Matthew Wilcox A couple of short loops. Signed-off-by: Matthew Wilcox --- fs/fs-writeback.c | 27 ++- 1 file changed, 10 insertions(+), 17 deletions(-) diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index

[PATCH v4 53/73] fs: Convert writeback to XArray

From: Matthew Wilcox A couple of short loops. Signed-off-by: Matthew Wilcox --- fs/fs-writeback.c | 27 ++- 1 file changed, 10 insertions(+), 17 deletions(-) diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index a3c2352507f6..18ad86ccba96 100644 ---

[PATCH v4 55/73] f2fs: Convert to XArray

From: Matthew Wilcox This is a straightforward conversion. Signed-off-by: Matthew Wilcox --- fs/f2fs/data.c | 3 +-- fs/f2fs/dir.c| 5 + fs/f2fs/inline.c | 6 +- fs/f2fs/node.c | 10 ++ 4 files changed, 5

[PATCH v4 55/73] f2fs: Convert to XArray

From: Matthew Wilcox This is a straightforward conversion. Signed-off-by: Matthew Wilcox --- fs/f2fs/data.c | 3 +-- fs/f2fs/dir.c| 5 + fs/f2fs/inline.c | 6 +- fs/f2fs/node.c | 10 ++ 4 files changed, 5 insertions(+), 19 deletions(-) diff --git a/fs/f2fs/data.c

RE: drivers/input/touchscreen/hideep.c:670:3: error: implicit declaration of function 'gpiod_set_value_cansleep'; did you mean 'gpio_set_value_cansleep'?

Sorry, for my late response. There is missing some header file about gpio. So I will send patch as soon as. Thank you your advice. Anthony. -Original Message- From: kbuild test robot [mailto:fengguang...@intel.com] Sent: Tuesday, December 5, 2017 9:23 PM To: Anthony Kim

RE: drivers/input/touchscreen/hideep.c:670:3: error: implicit declaration of function 'gpiod_set_value_cansleep'; did you mean 'gpio_set_value_cansleep'?

Sorry, for my late response. There is missing some header file about gpio. So I will send patch as soon as. Thank you your advice. Anthony. -Original Message- From: kbuild test robot [mailto:fengguang...@intel.com] Sent: Tuesday, December 5, 2017 9:23 PM To: Anthony Kim Cc:

[PATCH v4 56/73] lustre: Convert to XArray

From: Matthew Wilcox Signed-off-by: Matthew Wilcox --- drivers/staging/lustre/lustre/llite/glimpse.c | 12 +--- drivers/staging/lustre/lustre/mdc/mdc_request.c | 16 2 files changed, 13 insertions(+), 15 deletions(-)

[PATCH v4 56/73] lustre: Convert to XArray

From: Matthew Wilcox Signed-off-by: Matthew Wilcox --- drivers/staging/lustre/lustre/llite/glimpse.c | 12 +--- drivers/staging/lustre/lustre/mdc/mdc_request.c | 16 2 files changed, 13 insertions(+), 15 deletions(-) diff --git

[PATCH v4 63/73] 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 619aff70583f..de85ce87d333 100644 --- a/fs/dax.c +++ b/fs/dax.c @@

[PATCH v4 63/73] 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 619aff70583f..de85ce87d333 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -498,9 +498,9 @@ static void

[PATCH v4 65/73] dax: Fix sparse warning

From: Matthew Wilcox sparse doesn't know that follow_pte_pmd conditionally acquires the ptl, so add an annotation to let it know what's going on. Signed-off-by: Matthew Wilcox --- fs/dax.c | 1 + 1 file changed, 1 insertion(+) diff --git

[PATCH v4 65/73] dax: Fix sparse warning

From: Matthew Wilcox sparse doesn't know that follow_pte_pmd conditionally acquires the ptl, so add an annotation to let it know what's going on. Signed-off-by: Matthew Wilcox --- fs/dax.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/dax.c b/fs/dax.c index c663d82e8ba3..7a86ff1153dd

[PATCH v4 72/73] 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 v4 72/73] 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 v4 71/73] 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 | 33 + fs/xfs/xfs_qm.c| 32 fs/xfs/xfs_qm.h| 18

[PATCH v4 71/73] 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 | 33 + fs/xfs/xfs_qm.c| 32 fs/xfs/xfs_qm.h| 18 +- 3 files changed, 42

[PATCH v4 69/73] 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 v4 69/73] 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 v4 73/73] 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 | 70 +

[PATCH v4 73/73] 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 | 70 + drivers/usb/host/xhci.h | 6 ++-- 2 files changed,

[PATCH v4 66/73] 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 v4 66/73] 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 v4 67/73] 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 v4 67/73] 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 v4 54/73] nilfs2: Convert to XArray

From: Matthew Wilcox I'm not 100% convinced that the rewrite of nilfs_copy_back_pages is correct, but it will at least have different bugs from the current version. Signed-off-by: Matthew Wilcox --- fs/nilfs2/btnode.c | 37

[PATCH v4 54/73] nilfs2: Convert to XArray

From: Matthew Wilcox I'm not 100% convinced that the rewrite of nilfs_copy_back_pages is correct, but it will at least have different bugs from the current version. Signed-off-by: Matthew Wilcox --- fs/nilfs2/btnode.c | 37 +++- fs/nilfs2/page.c | 72

[PATCH v4 60/73] dax: Convert __dax_invalidate_mapping_entry to XArray

From: Matthew Wilcox Simple now that we already have an xa_state! Signed-off-by: Matthew Wilcox --- fs/dax.c | 10 +- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index ad984dece12e..66f6c4ea18f7

[PATCH v4 60/73] dax: Convert __dax_invalidate_mapping_entry to XArray

From: Matthew Wilcox Simple now that we already have an xa_state! Signed-off-by: Matthew Wilcox --- fs/dax.c | 10 +- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index ad984dece12e..66f6c4ea18f7 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -413,24

[PATCH v4 61/73] dax: Convert dax_writeback_one to XArray

From: Matthew Wilcox Likewise easy Signed-off-by: Matthew Wilcox --- fs/dax.c | 17 +++-- 1 file changed, 7 insertions(+), 10 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index 66f6c4ea18f7..7bd94f1b61d0 100644 --- a/fs/dax.c +++

[PATCH v4 62/73] 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 7bd94f1b61d0..619aff70583f 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -1498,21

[PATCH v4 61/73] dax: Convert dax_writeback_one to XArray

From: Matthew Wilcox Likewise easy Signed-off-by: Matthew Wilcox --- fs/dax.c | 17 +++-- 1 file changed, 7 insertions(+), 10 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index 66f6c4ea18f7..7bd94f1b61d0 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -633,8 +633,7 @@ static int

[PATCH v4 62/73] 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 7bd94f1b61d0..619aff70583f 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -1498,21 +1498,21 @@ static int dax_insert_pfn_mkwrite(struct

[PATCH v4 59/73] dax: More XArray conversion

From: Matthew Wilcox This time, we want to convert get_unlocked_mapping_entry() to use the XArray. That has a ripple effect, causing us to change the waitqueues to hash on the address of the xarray rather than the address of the mapping (functionally equivalent), and

[PATCH v4 70/73] 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 v4 59/73] dax: More XArray conversion

From: Matthew Wilcox This time, we want to convert get_unlocked_mapping_entry() to use the XArray. That has a ripple effect, causing us to change the waitqueues to hash on the address of the xarray rather than the address of the mapping (functionally equivalent), and create a lot of

[PATCH v4 70/73] 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 v4 68/73] 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 | 87

[PATCH v4 64/73] 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 v4 68/73] 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 | 87 ++--- 1 file changed,

[PATCH v4 64/73] 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 de85ce87d333..c663d82e8ba3 100644 --- a/fs/dax.c +++ b/fs/dax.c @@

[PATCH v4 22/73] page cache: Convert hole search to XArray

From: Matthew Wilcox The page cache offers the ability to search for a miss in the previous or next N locations. Rather than teach the XArray about the page cache's definition of a miss, use xas_prev() and xas_next() to search the page array. This should be more

[PATCH v4 18/73] xarray: Add xas_create_range

From: Matthew Wilcox This hopefully temporary function is useful for users who have not yet been converted to multi-index entries. Signed-off-by: Matthew Wilcox --- include/linux/xarray.h | 2 ++ lib/xarray.c | 22

[PATCH v4 22/73] page cache: Convert hole search to XArray

From: Matthew Wilcox The page cache offers the ability to search for a miss in the previous or next N locations. Rather than teach the XArray about the page cache's definition of a miss, use xas_prev() and xas_next() to search the page array. This should be more efficient as it does not have

[PATCH v4 18/73] xarray: Add xas_create_range

From: Matthew Wilcox This hopefully temporary function is useful for users who have not yet been converted to multi-index entries. Signed-off-by: Matthew Wilcox --- include/linux/xarray.h | 2 ++ lib/xarray.c | 22 ++ 2 files changed, 24 insertions(+) diff

[PATCH v4 12/73] xarray: Add xa_cmpxchg

From: Matthew Wilcox This works like doing cmpxchg() on an array entry. Code which wants the radix_tree_insert() semantic of not overwriting an existing entry can cmpxchg() with NULL and get the action it wants. Plus, instead of having an error returned, they get the

[PATCH v4 12/73] xarray: Add xa_cmpxchg

From: Matthew Wilcox This works like doing cmpxchg() on an array entry. Code which wants the radix_tree_insert() semantic of not overwriting an existing entry can cmpxchg() with NULL and get the action it wants. Plus, instead of having an error returned, they get the value currently stored in

Re: [PATCH][v5] uprobes/x86: emulate push insns for uprobe on x86

Hi, Ingo and Peter, Could you take a look at this patch and if no objection merge it into tip? This patch has been reviewed by Oleg Nesterov. Thanks! Yonghong On 11/30/17 4:12 PM, Yonghong Song wrote: Uprobe is a tracing mechanism for userspace programs. Typical uprobe will incur overhead of

Re: [PATCH][v5] uprobes/x86: emulate push insns for uprobe on x86

Hi, Ingo and Peter, Could you take a look at this patch and if no objection merge it into tip? This patch has been reviewed by Oleg Nesterov. Thanks! Yonghong On 11/30/17 4:12 PM, Yonghong Song wrote: Uprobe is a tracing mechanism for userspace programs. Typical uprobe will incur overhead of

[RESEND PATCH] partial revert of "[media] tvp5150: add HW input connectors support"

Commit f7b4b54e6364 ("[media] tvp5150: add HW input connectors support") added input signals support for the tvp5150, but the approach was found to be incorrect so the corresponding DT binding commit 82c2ffeb217a ("[media] tvp5150: document input connectors DT bindings") was reverted. This left

[RESEND PATCH] partial revert of "[media] tvp5150: add HW input connectors support"

Commit f7b4b54e6364 ("[media] tvp5150: add HW input connectors support") added input signals support for the tvp5150, but the approach was found to be incorrect so the corresponding DT binding commit 82c2ffeb217a ("[media] tvp5150: document input connectors DT bindings") was reverted. This left

Re: [PATCH v9 3/5] perf utils: use pmu->is_uncore to detect PMU UNCORE devices

On 12/6/2017 2:42 AM, Arnaldo Carvalho de Melo wrote: Em Tue, Dec 05, 2017 at 08:35:22PM +0800, Jin, Yao escreveu: A quick test with the new patch 'fix_json_v9_2.patch' shows it working. I'll take this as a Tested-by: you, ok? Hi Arnaldo, I didn't do a full test for this patch and for

Re: [PATCH v9 3/5] perf utils: use pmu->is_uncore to detect PMU UNCORE devices

On 12/6/2017 2:42 AM, Arnaldo Carvalho de Melo wrote: Em Tue, Dec 05, 2017 at 08:35:22PM +0800, Jin, Yao escreveu: A quick test with the new patch 'fix_json_v9_2.patch' shows it working. I'll take this as a Tested-by: you, ok? Hi Arnaldo, I didn't do a full test for this patch and for

Re: [PATCH v2] KVM: VMX: Cache IA32_DEBUGCTL in memory

Radim Krčmář wrote: > 2017-11-29 01:31-0800, Wanpeng Li: >> From: Wanpeng Li >> >> MSR_IA32_DEBUGCTLMSR is zeroed on VMEXIT, so it is saved/restored >> each time during world switch. Jim from Google pointed out that >> when running schbench in L2,

Re: [PATCH v2] KVM: VMX: Cache IA32_DEBUGCTL in memory

Radim Krčmář wrote: > 2017-11-29 01:31-0800, Wanpeng Li: >> From: Wanpeng Li >> >> MSR_IA32_DEBUGCTLMSR is zeroed on VMEXIT, so it is saved/restored >> each time during world switch. Jim from Google pointed out that >> when running schbench in L2, vmx_vcpu_run will occupy 4% cpu time, >>

[PATCH v2 2/3] net: macb: reduce scope of rx_fs_lock-protected regions

Commit ae8223de3df5 ("net: macb: Added support for RX filtering") introduces a lock, rx_fs_lock which is intended to protect the list of rx_flow items and synchronize access to the hardware rx filtering registers. However, the region protected by this lock is overscoped, unnecessarily including

[PATCH v2 2/3] net: macb: reduce scope of rx_fs_lock-protected regions

Commit ae8223de3df5 ("net: macb: Added support for RX filtering") introduces a lock, rx_fs_lock which is intended to protect the list of rx_flow items and synchronize access to the hardware rx filtering registers. However, the region protected by this lock is overscoped, unnecessarily including

[PATCH v2 0/3] macb rx filter cleanups

Here's a proper patchset based on net-next. v1 -> v2: - Rebased on net-next - Add Nicolas's Acks - Reorder commits, putting the list_empty() cleanups prior to the others. - Added commit reverting the GFP_ATOMIC change. Julia Cartwright (3): net: macb: kill useless use of

[PATCH v2 0/3] macb rx filter cleanups

Here's a proper patchset based on net-next. v1 -> v2: - Rebased on net-next - Add Nicolas's Acks - Reorder commits, putting the list_empty() cleanups prior to the others. - Added commit reverting the GFP_ATOMIC change. Julia Cartwright (3): net: macb: kill useless use of

[PATCH v2 1/3] net: macb: kill useless use of list_empty()

The list_for_each_entry() macro already handles the case where the list is empty (by not executing the loop body). It's not necessary to handle this case specially, so stop doing so. Cc: Rafal Ozieblo Acked-by: Nicolas Ferre Signed-off-by: Julia

[PATCH v2 1/3] net: macb: kill useless use of list_empty()

The list_for_each_entry() macro already handles the case where the list is empty (by not executing the loop body). It's not necessary to handle this case specially, so stop doing so. Cc: Rafal Ozieblo Acked-by: Nicolas Ferre Signed-off-by: Julia Cartwright ---

[PATCH v2 3/3] net: macb: change GFP_ATOMIC to GFP_KERNEL

Now that the rx_fs_lock is no longer held across allocation, it's safe to use GFP_KERNEL for allocating new entries. This reverts commit 81da3bf6e3f88 ("net: macb: change GFP_KERNEL to GFP_ATOMIC"). Cc: Julia Lawall Signed-off-by: Julia Cartwright ---

[PATCH v2 3/3] net: macb: change GFP_ATOMIC to GFP_KERNEL

Now that the rx_fs_lock is no longer held across allocation, it's safe to use GFP_KERNEL for allocating new entries. This reverts commit 81da3bf6e3f88 ("net: macb: change GFP_KERNEL to GFP_ATOMIC"). Cc: Julia Lawall Signed-off-by: Julia Cartwright --- drivers/net/ethernet/cadence/macb_main.c

Re: [PATCH] list_lru: Prefetch neighboring list entries before acquiring lock

On Tue, 5 Dec 2017 15:49:48 +0100 Michal Hocko wrote: > On Wed 29-11-17 09:17:34, Waiman Long wrote: > > The list_lru_del() function removes the given item from the LRU list. > > The operation looks simple, but it involves writing into the cachelines > > of the two neighboring

Re: [PATCH] list_lru: Prefetch neighboring list entries before acquiring lock

On Tue, 5 Dec 2017 15:49:48 +0100 Michal Hocko wrote: > On Wed 29-11-17 09:17:34, Waiman Long wrote: > > The list_lru_del() function removes the given item from the LRU list. > > The operation looks simple, but it involves writing into the cachelines > > of the two neighboring list entries in

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