From d8ed45c5dcd455fc5848d47f86883a1b872ac0d0 Mon Sep 17 00:00:00 2001 From: Michel Lespinasse 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 Signed-off-by: Andrew Morton Reviewed-by: Daniel Jordan Reviewed-by: Laurent Dufour Reviewed-by: Vlastimil Babka Cc: Davidlohr Bueso Cc: David Rientjes Cc: Hugh Dickins Cc: Jason Gunthorpe Cc: Jerome Glisse Cc: John Hubbard Cc: Liam Howlett Cc: Matthew Wilcox Cc: Peter Zijlstra Cc: Ying Han Link: http://lkml.kernel.org/r/20200520052908.204642-5-walken@google.com Signed-off-by: Linus Torvalds --- arch/mips/kernel/traps.c | 4 ++-- arch/mips/kernel/vdso.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) (limited to 'arch/mips') diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index e8cc10a9edc4..7c32c956156a 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -793,13 +793,13 @@ int process_fpemu_return(int sig, void __user *fault_addr, unsigned long fcr31) return 1; case SIGSEGV: - down_read(¤t->mm->mmap_sem); + mmap_read_lock(current->mm); vma = find_vma(current->mm, (unsigned long)fault_addr); if (vma && (vma->vm_start <= (unsigned long)fault_addr)) si_code = SEGV_ACCERR; else si_code = SEGV_MAPERR; - up_read(¤t->mm->mmap_sem); + mmap_read_unlock(current->mm); force_sig_fault(SIGSEGV, si_code, fault_addr); return 1; diff --git a/arch/mips/kernel/vdso.c b/arch/mips/kernel/vdso.c index 3adb7354bc01..242dc5e83847 100644 --- a/arch/mips/kernel/vdso.c +++ b/arch/mips/kernel/vdso.c @@ -94,7 +94,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) struct vm_area_struct *vma; int ret; - if (down_write_killable(&mm->mmap_sem)) + if (mmap_write_lock_killable(mm)) return -EINTR; if (IS_ENABLED(CONFIG_MIPS_FP_SUPPORT)) { @@ -187,6 +187,6 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) ret = 0; out: - up_write(&mm->mmap_sem); + mmap_write_unlock(mm); return ret; } -- cgit v1.2.3