diff options
Diffstat (limited to 'mm/page-writeback.c')
| -rw-r--r-- | mm/page-writeback.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 3831bab33180..345b5f7abb7b 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -985,13 +985,22 @@ continue_unlock: } } - if (wbc->sync_mode == WB_SYNC_NONE) { + if (wbc->nr_to_write > 0) wbc->nr_to_write--; - if (wbc->nr_to_write <= 0) { - done = 1; - break; - } + else if (wbc->sync_mode == WB_SYNC_NONE) { + /* + * We stop writing back only if we are not + * doing integrity sync. In case of integrity + * sync we have to keep going because someone + * may be concurrently dirtying pages, and we + * might have synced a lot of newly appeared + * dirty pages, but have not synced all of the + * old dirty pages. + */ + done = 1; + break; } + if (wbc->nonblocking && bdi_write_congested(bdi)) { wbc->encountered_congestion = 1; done = 1; |