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authorJens Axboe <jens.axboe@oracle.com>2009-07-09 14:52:32 +0200
committerJens Axboe <axboe@carl.(none)>2009-07-10 20:31:53 +0200
commit8aa7e847d834ed937a9ad37a0f2ad5b8584c1ab0 (patch)
tree76c8b4f1362a928d426f2201790ab5d128f57724 /fs/nfs
parentc2cc49a2f8a479dde96a599646d30b6cc9dbed78 (diff)
downloadlinux-8aa7e847d834ed937a9ad37a0f2ad5b8584c1ab0.tar.bz2
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>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/write.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index ce728829f79a..0a0a2ff767c3 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -202,8 +202,10 @@ static int nfs_set_page_writeback(struct page *page)
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 @@ static void nfs_end_page_writeback(struct page *page)
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);
}
/*