From a0815d556d1cfb686b46995f86fb081f623fa720 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 25 Mar 2015 18:58:53 -0400 Subject: [PATCH] NFSv4.1/pnfs: Ensure that writes respect the O_SYNC flag when doing O_DIRECT If the caller does not specify the O_SYNC flag, then it is legitimate to return from O_DIRECT without doing a pNFS layoutcommit operation. However if the file is opened O_DIRECT|O_SYNC then we'd better get it right. Signed-off-by: Trond Myklebust --- fs/nfs/direct.c | 1 + fs/nfs/file.c | 1 + fs/nfs/nfs4file.c | 1 + 3 files changed, 3 insertions(+) diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 51f617e..018a06a 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -1034,6 +1034,7 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, struct iov_iter *iter, if (i_size_read(inode) < iocb->ki_pos) i_size_write(inode, iocb->ki_pos); spin_unlock(&inode->i_lock); + generic_write_sync(file, pos, result); } } nfs_direct_req_release(dreq); diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 6959cb7..28228f3 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -281,6 +281,7 @@ nfs_file_fsync(struct file *file, loff_t start, loff_t end, int datasync) trace_nfs_fsync_enter(inode); + nfs_inode_dio_wait(inode); do { ret = filemap_write_and_wait_range(inode->i_mapping, start, end); if (ret != 0) diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c index 8da5409..befe7a2 100644 --- a/fs/nfs/nfs4file.c +++ b/fs/nfs/nfs4file.c @@ -104,6 +104,7 @@ nfs4_file_fsync(struct file *file, loff_t start, loff_t end, int datasync) trace_nfs_fsync_enter(inode); + nfs_inode_dio_wait(inode); do { ret = filemap_write_and_wait_range(inode->i_mapping, start, end); if (ret != 0) -- 2.7.4