Fix congestion_wait() sync/async vs read/write confusion
Commit 1faa16d22877f4839bd433547d770c676d1d964c accidentally broke
the bdi congestion wait queue logic, causing us to wait on congestion
for WRITE (== 1) when we really wanted BLK_RW_ASYNC (== 0) instead.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index ce72882..0a0a2ff 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -202,8 +202,10 @@
struct nfs_server *nfss = NFS_SERVER(inode);
if (atomic_long_inc_return(&nfss->writeback) >
- NFS_CONGESTION_ON_THRESH)
- set_bdi_congested(&nfss->backing_dev_info, WRITE);
+ NFS_CONGESTION_ON_THRESH) {
+ set_bdi_congested(&nfss->backing_dev_info,
+ BLK_RW_ASYNC);
+ }
}
return ret;
}
@@ -215,7 +217,7 @@
end_page_writeback(page);
if (atomic_long_dec_return(&nfss->writeback) < NFS_CONGESTION_OFF_THRESH)
- clear_bdi_congested(&nfss->backing_dev_info, WRITE);
+ clear_bdi_congested(&nfss->backing_dev_info, BLK_RW_ASYNC);
}
/*