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| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2018-01-28 09:29:41 -0500 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2018-01-28 22:00:15 -0500 |
| commit | e231c6879cfd44e4fffd384bb6dd7d313249a523 (patch) | |
| tree | 7894f5ccb7813ba0cd1f1717443255af510b417d | |
| parent | 128159f2929ef398698c28a4177eca1c1b88aa74 (diff) | |
| download | linux-e231c6879cfd44e4fffd384bb6dd7d313249a523.tar.bz2 | |
NFS: Fix a race between mmap() and O_DIRECT
When locking the file in order to do O_DIRECT on it, we must unmap
any mmapped ranges on the pagecache so that we can flush out the
dirty data.
Fixes: a5864c999de67 ("NFS: Do not serialise O_DIRECT reads and writes")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Cc: stable@vger.kernel.org # v4.8+
| -rw-r--r-- | fs/nfs/io.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nfs/io.c b/fs/nfs/io.c index 20fef85d2bb1..9034b4926909 100644 --- a/fs/nfs/io.c +++ b/fs/nfs/io.c @@ -99,7 +99,7 @@ static void nfs_block_buffered(struct nfs_inode *nfsi, struct inode *inode) { if (!test_bit(NFS_INO_ODIRECT, &nfsi->flags)) { set_bit(NFS_INO_ODIRECT, &nfsi->flags); - nfs_wb_all(inode); + nfs_sync_mapping(inode->i_mapping); } } |