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authorTrond Myklebust <trond.myklebust@primarydata.com>2015-02-27 22:54:19 -0500
committerTrond Myklebust <trond.myklebust@primarydata.com>2015-03-01 23:22:40 -0500
commitaa5accea404b2b92d39c1924cfeb90f6082f6389 (patch)
tree994520d462eaa508313e23750c992e48a0dba08e /fs/nfs/file.c
parentbe36e185bd26388355d3ea1847278b96ab350792 (diff)
downloadop-kernel-dev-aa5accea404b2b92d39c1924cfeb90f6082f6389.zip
op-kernel-dev-aa5accea404b2b92d39c1924cfeb90f6082f6389.tar.gz
NFS: Ensure that buffered writes wait for O_DIRECT writes to complete
The O_DIRECT code will grab the inode->i_mutex and flush out buffered writes, before scheduling a read or a write. However there is no equivalent in the buffered write code to wait for O_DIRECT to complete. Fixes a reported issue in xfstests generic/133, when first performing an O_DIRECT write followed by a buffered write. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Tested-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfs/file.c')
-rw-r--r--fs/nfs/file.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 94712fc..c045c71 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -372,6 +372,10 @@ start:
nfs_wait_bit_killable, TASK_KILLABLE);
if (ret)
return ret;
+ /*
+ * Wait for O_DIRECT to complete
+ */
+ nfs_inode_dio_wait(mapping->host);
page = grab_cache_page_write_begin(mapping, index, flags);
if (!page)
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