Merge branches 'for-4.4/upstream-fixes', 'for-4.5/async-suspend', 'for-4.5/container...

[mirror_ubuntu-artful-kernel.git] / fs / xfs / xfs_pnfs.c

diff --git a/fs/xfs/xfs_pnfs.c b/fs/xfs/xfs_pnfs.c
index ab4a6066f7ca7b24fbe4cdf2db0f2c1ddfdab3df..dc6221942b85f437767decfca9bf7ca9b0a94026 100644 (file)
--- a/fs/xfs/xfs_pnfs.c
+++ b/fs/xfs/xfs_pnfs.c
@@ -181,6 +181,11 @@ xfs_fs_map_blocks(
                ASSERT(imap.br_startblock != DELAYSTARTBLOCK);
 
                if (!nimaps || imap.br_startblock == HOLESTARTBLOCK) {
+                       /*
+                        * xfs_iomap_write_direct() expects to take ownership of
+                        * the shared ilock.
+                        */
+                       xfs_ilock(ip, XFS_ILOCK_SHARED);
                        error = xfs_iomap_write_direct(ip, offset, length,
                                                       &imap, nimaps);
                        if (error)