Patch "ufs_getfrag_block(): we only grab ->truncate_mutex on block creation path" has been added to the 4.9-stable tree

Patch "ufs_getfrag_block(): we only grab ->truncate_mutex on block creation path" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    ufs_getfrag_block(): we only grab ->truncate_mutex on block creation path

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     ufs_getfrag_block-we-only-grab-truncate_mutex-on-block-creation-path.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 006351ac8ead0d4a67dd3845e3ceffe650a23212 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 8 Jun 2017 23:28:53 -0400
Subject: ufs_getfrag_block(): we only grab ->truncate_mutex on block creation path

From: Al Viro <viro@zeniv.linux.org.uk>

commit 006351ac8ead0d4a67dd3845e3ceffe650a23212 upstream.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/ufs/inode.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/fs/ufs/inode.c
+++ b/fs/ufs/inode.c
@@ -403,7 +403,9 @@ static int ufs_getfrag_block(struct inod
 
 	if (!create) {
 		phys64 = ufs_frag_map(inode, offsets, depth);
-		goto out;
+		if (phys64)
+			map_bh(bh_result, sb, phys64 + frag);
+		return 0;
 	}
 
         /* This code entered only while writing ....? */


Patches currently in stable-queue which might be from viro@zeniv.linux.org.uk are

queue-4.9/ufs-set-correct-s_maxsize.patch
queue-4.9/ufs_getfrag_block-we-only-grab-truncate_mutex-on-block-creation-path.patch
queue-4.9/ufs-restore-proper-tail-allocation.patch
queue-4.9/ufs_extend_tail-fix-the-braino-in-calling-conventions-of-ufs_new_fragments.patch
queue-4.9/ufs-restore-maintaining-i_blocks.patch
queue-4.9/fix-ufs_isblockset.patch