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| author |   David S. Miller <davem@davemloft.net> | 2009-02-04 16:51:58 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-02-04 16:51:58 -0800 |
| commit | 005c79b3d4df48fa01b77e5ccf46e5cd4754cfd5 (patch) | |
| tree | bc3ef1b64dcdb48b2d6accb51951a0d73b33262e /mm/page-writeback.c | |
| parent | gianfar: Fix stashing support (diff) | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6 (diff) | |
| download | linux-dev-005c79b3d4df48fa01b77e5ccf46e5cd4754cfd5.tar.xz linux-dev-005c79b3d4df48fa01b77e5ccf46e5cd4754cfd5.zip | |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Diffstat (limited to 'mm/page-writeback.c')
| -rw-r--r-- | mm/page-writeback.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c index b493db7841dc..dc32dae01e5f 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -1051,13 +1051,22 @@ continue_unlock: } } - if (wbc->sync_mode == WB_SYNC_NONE) { - wbc->nr_to_write--; - if (wbc->nr_to_write <= 0) { - done = 1; - break; - } + if (nr_to_write > 0) + nr_to_write--; + 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; |