diff options
Diffstat (limited to 'fs/fs-writeback.c')
| -rw-r--r-- | fs/fs-writeback.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 1280f915079b..4b12ba70a895 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -347,9 +347,9 @@ static void inode_switch_wbs_work_fn(struct work_struct *work) * By the time control reaches here, RCU grace period has passed * since I_WB_SWITCH assertion and all wb stat update transactions * between unlocked_inode_to_wb_begin/end() are guaranteed to be - * synchronizing against mapping->tree_lock. + * synchronizing against the i_pages lock. * - * Grabbing old_wb->list_lock, inode->i_lock and mapping->tree_lock + * Grabbing old_wb->list_lock, inode->i_lock and the i_pages lock * gives us exclusion against all wb related operations on @inode * including IO list manipulations and stat updates. */ @@ -361,7 +361,7 @@ static void inode_switch_wbs_work_fn(struct work_struct *work) spin_lock_nested(&old_wb->list_lock, SINGLE_DEPTH_NESTING); } spin_lock(&inode->i_lock); - spin_lock_irq(&mapping->tree_lock); + xa_lock_irq(&mapping->i_pages); /* * Once I_FREEING is visible under i_lock, the eviction path owns @@ -373,22 +373,22 @@ static void inode_switch_wbs_work_fn(struct work_struct *work) /* * Count and transfer stats. Note that PAGECACHE_TAG_DIRTY points * to possibly dirty pages while PAGECACHE_TAG_WRITEBACK points to - * pages actually under underwriteback. + * pages actually under writeback. */ - radix_tree_for_each_tagged(slot, &mapping->page_tree, &iter, 0, + radix_tree_for_each_tagged(slot, &mapping->i_pages, &iter, 0, PAGECACHE_TAG_DIRTY) { struct page *page = radix_tree_deref_slot_protected(slot, - &mapping->tree_lock); + &mapping->i_pages.xa_lock); if (likely(page) && PageDirty(page)) { dec_wb_stat(old_wb, WB_RECLAIMABLE); inc_wb_stat(new_wb, WB_RECLAIMABLE); } } - radix_tree_for_each_tagged(slot, &mapping->page_tree, &iter, 0, + radix_tree_for_each_tagged(slot, &mapping->i_pages, &iter, 0, PAGECACHE_TAG_WRITEBACK) { struct page *page = radix_tree_deref_slot_protected(slot, - &mapping->tree_lock); + &mapping->i_pages.xa_lock); if (likely(page)) { WARN_ON_ONCE(!PageWriteback(page)); dec_wb_stat(old_wb, WB_WRITEBACK); @@ -430,7 +430,7 @@ skip_switch: */ smp_store_release(&inode->i_state, inode->i_state & ~I_WB_SWITCH); - spin_unlock_irq(&mapping->tree_lock); + xa_unlock_irq(&mapping->i_pages); spin_unlock(&inode->i_lock); spin_unlock(&new_wb->list_lock); spin_unlock(&old_wb->list_lock); @@ -506,8 +506,8 @@ static void inode_switch_wbs(struct inode *inode, int new_wb_id) /* * In addition to synchronizing among switchers, I_WB_SWITCH tells - * the RCU protected stat update paths to grab the mapping's - * tree_lock so that stat transfer can synchronize against them. + * the RCU protected stat update paths to grab the i_page + * lock so that stat transfer can synchronize against them. * Let's continue after I_WB_SWITCH is guaranteed to be visible. */ call_rcu(&isw->rcu_head, inode_switch_wbs_rcu_fn); |