Patch "ext4: don't retry file block mapping on bigalloc fs with non-extent file" has been added to the 4.1-stable tree

Patch "ext4: don't retry file block mapping on bigalloc fs with non-extent file" has been added to the 4.1-stable tree

[gregkh]

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

    ext4: don't retry file block mapping on bigalloc fs with non-extent file

to the 4.1-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:
     ext4-don-t-retry-file-block-mapping-on-bigalloc-fs-with-non-extent-file.patch
and it can be found in the queue-4.1 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 292db1bc6c105d86111e858859456bcb11f90f91 Mon Sep 17 00:00:00 2001
From: "Darrick J. Wong" <darrick.wong@oracle.com>
Date: Sun, 21 Jun 2015 21:10:51 -0400
Subject: ext4: don't retry file block mapping on bigalloc fs with non-extent file

From: "Darrick J. Wong" <darrick.wong@oracle.com>

commit 292db1bc6c105d86111e858859456bcb11f90f91 upstream.

ext4 isn't willing to map clusters to a non-extent file.  Don't signal
this with an out of space error, since the FS will retry the
allocation (which didn't fail) forever.  Instead, return EUCLEAN so
that the operation will fail immediately all the way back to userspace.

(The fix is either to run e2fsck -E bmap2extent, or to chattr +e the file.)

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/ext4/indirect.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/ext4/indirect.c
+++ b/fs/ext4/indirect.c
@@ -565,7 +565,7 @@ int ext4_ind_map_blocks(handle_t *handle
 				       EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
 		EXT4_ERROR_INODE(inode, "Can't allocate blocks for "
 				 "non-extent mapped inodes with bigalloc");
-		return -ENOSPC;
+		return -EUCLEAN;
 	}
 
 	/* Set up for the direct block allocation */


Patches currently in stable-queue which might be from darrick.wong@oracle.com are

queue-4.1/ext4-don-t-retry-file-block-mapping-on-bigalloc-fs-with-non-extent-file.patch