diff options
Diffstat (limited to 'mm/ksm.c')
| -rw-r--r-- | mm/ksm.c | 12 |
1 files changed, 6 insertions, 6 deletions
@@ -442,7 +442,7 @@ static void insert_to_mm_slots_hash(struct mm_struct *mm, /* * ksmd, and unmerge_and_remove_all_rmap_items(), must not touch an mm's * page tables after it has passed through ksm_exit() - which, if necessary, - * takes mmap_sem briefly to serialize against them. ksm_exit() does not set + * takes mmap_lock briefly to serialize against them. ksm_exit() does not set * a special flag: they can just back out as soon as mm_users goes to zero. * ksm_test_exit() is used throughout to make this test for exit: in some * places for correctness, in some places just to avoid unnecessary work. @@ -831,7 +831,7 @@ static void remove_trailing_rmap_items(struct mm_slot *mm_slot, * Though it's very tempting to unmerge rmap_items from stable tree rather * than check every pte of a given vma, the locking doesn't quite work for * that - an rmap_item is assigned to the stable tree after inserting ksm - * page and upping mmap_sem. Nor does it fit with the way we skip dup'ing + * page and upping mmap_lock. Nor does it fit with the way we skip dup'ing * rmap_items from parent to child at fork time (so as not to waste time * if exit comes before the next scan reaches it). * @@ -1292,7 +1292,7 @@ static int try_to_merge_with_ksm_page(struct rmap_item *rmap_item, /* Unstable nid is in union with stable anon_vma: remove first */ remove_rmap_item_from_tree(rmap_item); - /* Must get reference to anon_vma while still holding mmap_sem */ + /* Must get reference to anon_vma while still holding mmap_lock */ rmap_item->anon_vma = vma->anon_vma; get_anon_vma(vma->anon_vma); out: @@ -2343,13 +2343,13 @@ next_mm: struct mm_slot, mm_list); if (ksm_scan.address == 0) { /* - * We've completed a full scan of all vmas, holding mmap_sem + * We've completed a full scan of all vmas, holding mmap_lock * throughout, and found no VM_MERGEABLE: so do the same as * __ksm_exit does to remove this mm from all our lists now. * This applies either when cleaning up after __ksm_exit * (but beware: we can reach here even before __ksm_exit), * or when all VM_MERGEABLE areas have been unmapped (and - * mmap_sem then protects against race with MADV_MERGEABLE). + * mmap_lock then protects against race with MADV_MERGEABLE). */ hash_del(&slot->link); list_del(&slot->mm_list); @@ -2536,7 +2536,7 @@ void __ksm_exit(struct mm_struct *mm) * This process is exiting: if it's straightforward (as is the * case when ksmd was never running), free mm_slot immediately. * But if it's at the cursor or has rmap_items linked to it, use - * mmap_sem to synchronize with any break_cows before pagetables + * mmap_lock to synchronize with any break_cows before pagetables * are freed, and leave the mm_slot on the list for ksmd to free. * Beware: ksm may already have noticed it exiting and freed the slot. */ |