diff options
Diffstat (limited to 'mm/page-writeback.c')
| -rw-r--r-- | mm/page-writeback.c | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 807236aed275..281a46aeae61 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -2148,6 +2148,7 @@ int write_cache_pages(struct address_space *mapping, { int ret = 0; int done = 0; + int error; struct pagevec pvec; int nr_pages; pgoff_t uninitialized_var(writeback_index); @@ -2244,25 +2245,31 @@ continue_unlock: goto continue_unlock; trace_wbc_writepage(wbc, inode_to_bdi(mapping->host)); - ret = (*writepage)(page, wbc, data); - if (unlikely(ret)) { - if (ret == AOP_WRITEPAGE_ACTIVATE) { + error = (*writepage)(page, wbc, data); + if (unlikely(error)) { + /* + * Handle errors according to the type of + * writeback. There's no need to continue for + * background writeback. Just push done_index + * past this page so media errors won't choke + * writeout for the entire file. For integrity + * writeback, we must process the entire dirty + * set regardless of errors because the fs may + * still have state to clear for each page. In + * that case we continue processing and return + * the first error. + */ + if (error == AOP_WRITEPAGE_ACTIVATE) { unlock_page(page); - ret = 0; - } else { - /* - * done_index is set past this page, - * so media errors will not choke - * background writeout for the entire - * file. This has consequences for - * range_cyclic semantics (ie. it may - * not be suitable for data integrity - * writeout). - */ + error = 0; + } else if (wbc->sync_mode != WB_SYNC_ALL) { + ret = error; done_index = page->index + 1; done = 1; break; } + if (!ret) + ret = error; } /* |