Patch "fuse: fsync() did not return IO errors" has been added to the 4.4-stable tree

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

fuse: fsync() did not return IO errors

to the 4.4-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:
fuse-fsync-did-not-return-io-errors.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Alexey Kuznetsov <[email protected]>
Date: Tue, 19 Jul 2016 12:48:01 -0700
Subject: fuse: fsync() did not return IO errors

From: Alexey Kuznetsov <[email protected]>

commit ac7f052b9e1534c8248f814b6f0068ad8d4a06d2 upstream.

Due to implementation of fuse writeback filemap_write_and_wait_range() does not catch errors. We have to do this directly after fuse_sync_writes()

---
 fs/fuse/file.c |   15 +++++++++++++++
 1 file changed, 15 insertions(+)

@@ -462,6 +462,21 @@ int fuse_fsync_common(struct file *file,
 		goto out;
 
 	fuse_sync_writes(inode);
+
+	/*
+	 * Due to implementation of fuse writeback
+	 * filemap_write_and_wait_range() does not catch errors.
+	 * We have to do this directly after fuse_sync_writes()
+	 */
+	if (test_bit(AS_ENOSPC, &file->f_mapping->flags) &&
+	    test_and_clear_bit(AS_ENOSPC, &file->f_mapping->flags))
+		err = -ENOSPC;
+	if (test_bit(AS_EIO, &file->f_mapping->flags) &&
+	    test_and_clear_bit(AS_EIO, &file->f_mapping->flags))
+		err = -EIO;
+	if (err)
+		goto out;
+
 	err = sync_inode_metadata(inode, 1);
 	if (err)
 		goto out;

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/fuse-fsync-did-not-return-io-errors.patch