diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/filemap.c | 10 | ||||
| -rw-r--r-- | mm/hugetlb.c | 10 | ||||
| -rw-r--r-- | mm/mmap.c | 8 | ||||
| -rw-r--r-- | mm/mremap.c | 2 | ||||
| -rw-r--r-- | mm/rmap.c | 6 |
5 files changed, 18 insertions, 18 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 14b4642..e8905bc 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -62,16 +62,16 @@ /* * Lock ordering: * - * ->i_mmap_mutex (truncate_pagecache) + * ->i_mmap_rwsem (truncate_pagecache) * ->private_lock (__free_pte->__set_page_dirty_buffers) * ->swap_lock (exclusive_swap_page, others) * ->mapping->tree_lock * * ->i_mutex - * ->i_mmap_mutex (truncate->unmap_mapping_range) + * ->i_mmap_rwsem (truncate->unmap_mapping_range) * * ->mmap_sem - * ->i_mmap_mutex + * ->i_mmap_rwsem * ->page_table_lock or pte_lock (various, mainly in memory.c) * ->mapping->tree_lock (arch-dependent flush_dcache_mmap_lock) * @@ -85,7 +85,7 @@ * sb_lock (fs/fs-writeback.c) * ->mapping->tree_lock (__sync_single_inode) * - * ->i_mmap_mutex + * ->i_mmap_rwsem * ->anon_vma.lock (vma_adjust) * * ->anon_vma.lock @@ -105,7 +105,7 @@ * ->inode->i_lock (zap_pte_range->set_page_dirty) * ->private_lock (zap_pte_range->__set_page_dirty_buffers) * - * ->i_mmap_mutex + * ->i_mmap_rwsem * ->tasklist_lock (memory_failure, collect_procs_ao) */ diff --git a/mm/hugetlb.c b/mm/hugetlb.c index ffe1930..989cb03 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -2726,9 +2726,9 @@ void __unmap_hugepage_range_final(struct mmu_gather *tlb, * on its way out. We're lucky that the flag has such an appropriate * name, and can in fact be safely cleared here. We could clear it * before the __unmap_hugepage_range above, but all that's necessary - * is to clear it before releasing the i_mmap_mutex. This works + * is to clear it before releasing the i_mmap_rwsem. This works * because in the context this is called, the VMA is about to be - * destroyed and the i_mmap_mutex is held. + * destroyed and the i_mmap_rwsem is held. */ vma->vm_flags &= ~VM_MAYSHARE; } @@ -3370,9 +3370,9 @@ unsigned long hugetlb_change_protection(struct vm_area_struct *vma, spin_unlock(ptl); } /* - * Must flush TLB before releasing i_mmap_mutex: x86's huge_pmd_unshare + * Must flush TLB before releasing i_mmap_rwsem: x86's huge_pmd_unshare * may have cleared our pud entry and done put_page on the page table: - * once we release i_mmap_mutex, another task can do the final put_page + * once we release i_mmap_rwsem, another task can do the final put_page * and that page table be reused and filled with junk. */ flush_tlb_range(vma, start, end); @@ -3525,7 +3525,7 @@ static int vma_shareable(struct vm_area_struct *vma, unsigned long addr) * and returns the corresponding pte. While this is not necessary for the * !shared pmd case because we can allocate the pmd later as well, it makes the * code much cleaner. pmd allocation is essential for the shared case because - * pud has to be populated inside the same i_mmap_mutex section - otherwise + * pud has to be populated inside the same i_mmap_rwsem section - otherwise * racing tasks could either miss the sharing (see huge_pte_offset) or select a * bad pmd for sharing. */ @@ -232,7 +232,7 @@ error: } /* - * Requires inode->i_mapping->i_mmap_mutex + * Requires inode->i_mapping->i_mmap_rwsem */ static void __remove_shared_vm_struct(struct vm_area_struct *vma, struct file *file, struct address_space *mapping) @@ -2791,7 +2791,7 @@ void exit_mmap(struct mm_struct *mm) /* Insert vm structure into process list sorted by address * and into the inode's i_mmap tree. If vm_file is non-NULL - * then i_mmap_mutex is taken here. + * then i_mmap_rwsem is taken here. */ int insert_vm_struct(struct mm_struct *mm, struct vm_area_struct *vma) { @@ -3086,7 +3086,7 @@ static void vm_lock_mapping(struct mm_struct *mm, struct address_space *mapping) */ if (test_and_set_bit(AS_MM_ALL_LOCKS, &mapping->flags)) BUG(); - mutex_lock_nest_lock(&mapping->i_mmap_mutex, &mm->mmap_sem); + down_write_nest_lock(&mapping->i_mmap_rwsem, &mm->mmap_sem); } } @@ -3113,7 +3113,7 @@ static void vm_lock_mapping(struct mm_struct *mm, struct address_space *mapping) * vma in this mm is backed by the same anon_vma or address_space. * * We can take all the locks in random order because the VM code - * taking i_mmap_mutex or anon_vma->rwsem outside the mmap_sem never + * taking i_mmap_rwsem or anon_vma->rwsem outside the mmap_sem never * takes more than one of them in a row. Secondly we're protected * against a concurrent mm_take_all_locks() by the mm_all_locks_mutex. * diff --git a/mm/mremap.c b/mm/mremap.c index 426b448..84aa36f 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -99,7 +99,7 @@ static void move_ptes(struct vm_area_struct *vma, pmd_t *old_pmd, spinlock_t *old_ptl, *new_ptl; /* - * When need_rmap_locks is true, we take the i_mmap_mutex and anon_vma + * When need_rmap_locks is true, we take the i_mmap_rwsem and anon_vma * locks to ensure that rmap will always observe either the old or the * new ptes. This is the easiest way to avoid races with * truncate_pagecache(), page migration, etc... @@ -23,7 +23,7 @@ * inode->i_mutex (while writing or truncating, not reading or faulting) * mm->mmap_sem * page->flags PG_locked (lock_page) - * mapping->i_mmap_mutex + * mapping->i_mmap_rwsem * anon_vma->rwsem * mm->page_table_lock or pte_lock * zone->lru_lock (in mark_page_accessed, isolate_lru_page) @@ -1260,7 +1260,7 @@ out_mlock: /* * We need mmap_sem locking, Otherwise VM_LOCKED check makes * unstable result and race. Plus, We can't wait here because - * we now hold anon_vma->rwsem or mapping->i_mmap_mutex. + * we now hold anon_vma->rwsem or mapping->i_mmap_rwsem. * if trylock failed, the page remain in evictable lru and later * vmscan could retry to move the page to unevictable lru if the * page is actually mlocked. @@ -1684,7 +1684,7 @@ static int rmap_walk_file(struct page *page, struct rmap_walk_control *rwc) * The page lock not only makes sure that page->mapping cannot * suddenly be NULLified by truncation, it makes sure that the * structure at mapping cannot be freed and reused yet, - * so we can safely take mapping->i_mmap_mutex. + * so we can safely take mapping->i_mmap_rwsem. */ VM_BUG_ON_PAGE(!PageLocked(page), page); |
