[PATCH] Documentation: Clarify better about the rwsem non-owner release issue

Reword and clarify better about the rwsem non-owner release issue. Link: https://lore.kernel.org/linux-pci/20200321212144.ga6...@google.com/ Signed-off-by: Joel Fernandes (Google) --- Documentation/locking/locktypes.rst | 8 1 file changed, 4 insertions(+), 4 deletions(-) diff --git

[PATCH] treewide: Rename rcu_dereference_raw_notrace to _check

check" indicating sparse checking. Signed-off-by: Joel Fernandes (Google) --- Previous discussion is here: https://lore.kernel.org/linuxppc-dev/20190528200014.gv28...@linux.ibm.com/T/ Documentation/RCU/Design/Requirements/Requirements.html | 2 +- arch/powerpc/include/asm/kvm_book3s_64.h

[PATCH RFC 5/5] rcu: Remove rcu_dereference_raw_notrace since no users

The series removes all users of the API and with this patch, the API itself. Also fix documentation. Signed-off-by: Joel Fernandes (Google) --- Documentation/RCU/Design/Requirements/Requirements.html | 6 +++--- include/linux/rcupdate.h| 9 - 2 files

[PATCH RFC 4/5] rculist: Remove hlist_for_each_entry_rcu_notrace since no users

The series removes all users of the API and with this patch, the API itself. Signed-off-by: Joel Fernandes (Google) --- .clang-format | 1 - include/linux/rculist.h | 20 2 files changed, 21 deletions(-) diff --git a/.clang-format b/.clang-format index

[PATCH RFC 3/5] hashtable: Use the regular hlist_for_each_entry_rcu API

hlist_for_each_entry_rcu already does not do any tracing. This series removes the notrace variant of it, so let us just use the regular API. In a future patch, we can also remove the hash_for_each_possible_rcu_notrace API that this patch touches. Signed-off-by: Joel Fernandes (Google

[PATCH RFC 2/5] trace: Use regular rcu_dereference_raw API

the rcu_dereference_raw_notrace API) with hlist_for_each_entry_rcu which also does not do any tracing. Signed-off-by: Joel Fernandes (Google) --- kernel/trace/ftrace.c | 4 ++-- kernel/trace/ftrace_internal.h | 8 kernel/trace/trace.c | 4 ++-- 3 files changed, 8 insertions(+), 8

[PATCH RFC 0/5] Remove some notrace RCU APIs

The series removes users of the following APIs, and the APIs themselves, since the regular non - _notrace variants don't do any tracing anyway. * hlist_for_each_entry_rcu_notrace * rcu_dereference_raw_notrace Joel Fernandes (Google) (5): powerpc: Use regular rcu_dereference_raw API trace: Use

[PATCH RFC 1/5] powerpc: Use regular rcu_dereference_raw API

rcu_dereference_raw already does not do any tracing. There is no need to use the _notrace variant of it and this series removes that API, so let us use the regular variant here. Signed-off-by: Joel Fernandes (Google) --- arch/powerpc/include/asm/kvm_book3s_64.h | 2 +- 1 file changed, 1

[PATCH 4/4] x86: select HAVE_MOVE_PMD for faster mremap (v1)

Moving page-tables at the PMD-level on x86 is known to be safe. Enable this option so that we can do fast mremap when possible. Signed-off-by: Joel Fernandes (Google) --- arch/x86/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 1a0be022f91d

[PATCH 3/4] arm64: select HAVE_MOVE_PMD for faster mremap (v1)

Moving page-tables at the PMD-level on arm64 is known to be safe. Enable this option so that we can do fast mremap when possible. Signed-off-by: Joel Fernandes (Google) --- arch/arm64/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index

[PATCH 2/4] mm: speed up mremap by 500x on large regions (v2)

and arm64. Cc: minc...@kernel.org Cc: pan...@google.com Cc: hu...@google.com Cc: lokeshgi...@google.com Cc: dan...@google.com Cc: mho...@kernel.org Cc: kir...@shutemov.name Cc: a...@linux-foundation.org Cc: kernel-t...@android.com Signed-off-by: Joel Fernandes (Google) --- arch/Kconfig | 5 mm

[PATCH 1/4] treewide: remove unused address argument from pte_alloc functions (v2)

(a, b) e + #define fn(a) e ) Suggested-by: Kirill A. Shutemov Cc: Kirill A. Shutemov Cc: Michal Hocko Cc: Julia Lawall Signed-off-by: Joel Fernandes (Google) --- arch/alpha/include/asm/pgalloc.h | 6 +++--- arch/arc/include/asm/pgalloc.h | 5 ++--- arch/arm/include

[PATCH 0/4] Add support for fast mremap

v1 (Anton Ivanov) update changelog with manual fixups for m68k and microblaze. Joel Fernandes (Google) (4): treewide: remove unused address argument from pte_alloc functions (v2) mm: speed up mremap by 500x on large regions (v2) arm64: select HAVE_MOVE_PMD for faster mremap (v

[PATCH v2 2/2] mm: speed up mremap by 500x on large regions

and arm64. Cc: minc...@kernel.org Cc: pan...@google.com Cc: hu...@google.com Cc: lokeshgi...@google.com Cc: dan...@google.com Cc: mho...@kernel.org Cc: kir...@shutemov.name Cc: a...@linux-foundation.org Signed-off-by: Joel Fernandes (Google) --- mm/mremap.c | 62

[PATCH v2 1/2] treewide: remove unused address argument from pte_alloc functions

a) e ) Suggested-by: Kirill A. Shutemov Cc: Michal Hocko Cc: Julia Lawall Cc: elfr...@users.sourceforge.net Signed-off-by: Joel Fernandes (Google) --- arch/alpha/include/asm/pgalloc.h | 6 +++--- arch/arc/include/asm/pgalloc.h | 5 ++--- arch/arm/include/asm/pgall