diff options
Diffstat (limited to 'fs/btrfs/ordered-data.c')
| -rw-r--r-- | fs/btrfs/ordered-data.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c index 534544e08f76..760c4a5e096b 100644 --- a/fs/btrfs/ordered-data.c +++ b/fs/btrfs/ordered-data.c @@ -452,9 +452,7 @@ void btrfs_get_logged_extents(struct inode *inode, continue; if (entry_end(ordered) <= start) break; - if (!list_empty(&ordered->log_list)) - continue; - if (test_bit(BTRFS_ORDERED_LOGGED, &ordered->flags)) + if (test_and_set_bit(BTRFS_ORDERED_LOGGED, &ordered->flags)) continue; list_add(&ordered->log_list, logged_list); atomic_inc(&ordered->refs); @@ -511,8 +509,7 @@ void btrfs_wait_logged_extents(struct btrfs_trans_handle *trans, wait_event(ordered->wait, test_bit(BTRFS_ORDERED_IO_DONE, &ordered->flags)); - if (!test_and_set_bit(BTRFS_ORDERED_LOGGED, &ordered->flags)) - list_add_tail(&ordered->trans_list, &trans->ordered); + list_add_tail(&ordered->trans_list, &trans->ordered); spin_lock_irq(&log->log_extents_lock[index]); } spin_unlock_irq(&log->log_extents_lock[index]); @@ -725,6 +722,7 @@ void btrfs_start_ordered_extent(struct inode *inode, int btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len) { int ret = 0; + int ret_wb = 0; u64 end; u64 orig_end; struct btrfs_ordered_extent *ordered; @@ -744,9 +742,14 @@ int btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len) if (ret) return ret; - ret = filemap_fdatawait_range(inode->i_mapping, start, orig_end); - if (ret) - return ret; + /* + * If we have a writeback error don't return immediately. Wait first + * for any ordered extents that haven't completed yet. This is to make + * sure no one can dirty the same page ranges and call writepages() + * before the ordered extents complete - to avoid failures (-EEXIST) + * when adding the new ordered extents to the ordered tree. + */ + ret_wb = filemap_fdatawait_range(inode->i_mapping, start, orig_end); end = orig_end; while (1) { @@ -770,7 +773,7 @@ int btrfs_wait_ordered_range(struct inode *inode, u64 start, u64 len) break; end--; } - return ret; + return ret_wb ? ret_wb : ret; } /* |
