From d8ed45c5dcd455fc5848d47f86883a1b872ac0d0 Mon Sep 17 00:00:00 2001 From: Michel Lespinasse <walken@google.com> Date: Mon, 8 Jun 2020 21:33:25 -0700 Subject: mmap locking API: use coccinelle to convert mmap_sem rwsem call sites This change converts the existing mmap_sem rwsem calls to use the new mmap locking API instead. The change is generated using coccinelle with the following rule: // spatch --sp-file mmap_lock_api.cocci --in-place --include-headers --dir . @@ expression mm; @@ ( -init_rwsem +mmap_init_lock | -down_write +mmap_write_lock | -down_write_killable +mmap_write_lock_killable | -down_write_trylock +mmap_write_trylock | -up_write +mmap_write_unlock | -downgrade_write +mmap_write_downgrade | -down_read +mmap_read_lock | -down_read_killable +mmap_read_lock_killable | -down_read_trylock +mmap_read_trylock | -up_read +mmap_read_unlock ) -(&mm->mmap_sem) +(mm) Signed-off-by: Michel Lespinasse <walken@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Cc: Davidlohr Bueso <dbueso@suse.de> Cc: David Rientjes <rientjes@google.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Jerome Glisse <jglisse@redhat.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Liam Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ying Han <yinghan@google.com> Link: http://lkml.kernel.org/r/20200520052908.204642-5-walken@google.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> --- drivers/oprofile/buffer_sync.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers/oprofile') diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c index ac27f3d3fbb4..d3b017af7758 100644 --- a/drivers/oprofile/buffer_sync.c +++ b/drivers/oprofile/buffer_sync.c @@ -91,11 +91,11 @@ munmap_notify(struct notifier_block *self, unsigned long val, void *data) struct mm_struct *mm = current->mm; struct vm_area_struct *mpnt; - down_read(&mm->mmap_sem); + mmap_read_lock(mm); mpnt = find_vma(mm, addr); if (mpnt && mpnt->vm_file && (mpnt->vm_flags & VM_EXEC)) { - up_read(&mm->mmap_sem); + mmap_read_unlock(mm); /* To avoid latency problems, we only process the current CPU, * hoping that most samples for the task are on this CPU */ @@ -103,7 +103,7 @@ munmap_notify(struct notifier_block *self, unsigned long val, void *data) return 0; } - up_read(&mm->mmap_sem); + mmap_read_unlock(mm); return 0; } @@ -256,7 +256,7 @@ lookup_dcookie(struct mm_struct *mm, unsigned long addr, off_t *offset) unsigned long cookie = NO_COOKIE; struct vm_area_struct *vma; - down_read(&mm->mmap_sem); + mmap_read_lock(mm); for (vma = find_vma(mm, addr); vma; vma = vma->vm_next) { if (addr < vma->vm_start || addr >= vma->vm_end) @@ -276,7 +276,7 @@ lookup_dcookie(struct mm_struct *mm, unsigned long addr, off_t *offset) if (!vma) cookie = INVALID_COOKIE; - up_read(&mm->mmap_sem); + mmap_read_unlock(mm); return cookie; } -- cgit v1.2.3