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

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>

diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c
index 5890614696870bdecef2ea18eb900741ebbeb339..b07a221c31386f068b0245b772507157ae3eaa0b 100644 (file)
--- a/fs/ext4/indirect.c
+++ b/fs/ext4/indirect.c
@@ -577,7 +577,7 @@ int ext4_ind_map_blocks(handle_t *handle, struct inode *inode,
                                       EXT4_FEATURE_RO_COMPAT_BIGALLOC)) {
                EXT4_ERROR_INODE(inode, "Can't allocate blocks for "
                                 "non-extent mapped inodes with bigalloc");
-               return -ENOSPC;
+               return -EUCLEAN;
        }
 
        goal = ext4_find_goal(inode, map->m_lblk, partial);