diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-06-17 13:20:14 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-06-17 13:20:14 -0300 |
| commit | 08a7c7772b4db0be06e3b27239147c0a36e2a507 (patch) | |
| tree | af653cb85a263ac19334cdaa74ecd58f909c5cef /kernel/fork.c | |
| parent | b13b04d9382113f787e21c9567a4022fef8697b9 (diff) | |
| parent | 69119673bd50b176ded34032fadd41530fb5af21 (diff) | |
Merge remote-tracking branch 'torvalds/master' into perf/urgent
To get some newer headers that got out of sync with the copies in tools/
so that we can try to have the tools/perf/ build clean for v5.8 with
fewer pull requests.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'kernel/fork.c')
| -rw-r--r-- | kernel/fork.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index cefe8745c46e..142b23645d82 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -96,7 +96,6 @@ #include <linux/kasan.h> #include <linux/scs.h> -#include <asm/pgtable.h> #include <asm/pgalloc.h> #include <linux/uaccess.h> #include <asm/mmu_context.h> @@ -493,7 +492,7 @@ static __latent_entropy int dup_mmap(struct mm_struct *mm, LIST_HEAD(uf); uprobe_start_dup_mmap(); - if (down_write_killable(&oldmm->mmap_sem)) { + if (mmap_write_lock_killable(oldmm)) { retval = -EINTR; goto fail_uprobe_end; } @@ -502,7 +501,7 @@ static __latent_entropy int dup_mmap(struct mm_struct *mm, /* * Not linked in yet - no deadlock potential: */ - down_write_nested(&mm->mmap_sem, SINGLE_DEPTH_NESTING); + mmap_write_lock_nested(mm, SINGLE_DEPTH_NESTING); /* No ordering required: file already has been exposed. */ RCU_INIT_POINTER(mm->exe_file, get_mm_exe_file(oldmm)); @@ -618,9 +617,9 @@ static __latent_entropy int dup_mmap(struct mm_struct *mm, /* a new mm has just been created */ retval = arch_dup_mmap(oldmm, mm); out: - up_write(&mm->mmap_sem); + mmap_write_unlock(mm); flush_tlb_mm(oldmm); - up_write(&oldmm->mmap_sem); + mmap_write_unlock(oldmm); dup_userfaultfd_complete(&uf); fail_uprobe_end: uprobe_end_dup_mmap(); @@ -650,9 +649,9 @@ static inline void mm_free_pgd(struct mm_struct *mm) #else static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm) { - down_write(&oldmm->mmap_sem); + mmap_write_lock(oldmm); RCU_INIT_POINTER(mm->exe_file, get_mm_exe_file(oldmm)); - up_write(&oldmm->mmap_sem); + mmap_write_unlock(oldmm); return 0; } #define mm_alloc_pgd(mm) (0) @@ -1023,7 +1022,7 @@ static struct mm_struct *mm_init(struct mm_struct *mm, struct task_struct *p, mm->vmacache_seqnum = 0; atomic_set(&mm->mm_users, 1); atomic_set(&mm->mm_count, 1); - init_rwsem(&mm->mmap_sem); + mmap_init_lock(mm); INIT_LIST_HEAD(&mm->mmlist); mm->core_state = NULL; mm_pgtables_bytes_init(mm); |