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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: Zefan Li <lizefan@huawei.com>
This commit is contained in:
Darrick J. Wong 2015-06-21 21:10:51 -04:00 committed by Zefan Li
parent 52686b9264
commit 2ba0674bed
1 changed files with 1 additions and 1 deletions
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2
fs/ext4/indirect.c
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@ -705,7 +705,7 @@ 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);