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authorEric Whitney <enwlinux@gmail.com>2014-01-06 14:00:23 -0500
committerTheodore Ts'o <tytso@mit.edu>2014-01-06 14:00:23 -0500
commitd0abafac8c9162f39c4f6b2f8141b772a09b3770 (patch)
tree9f352c64a8d2cb8330600c11e8dc9855af9c63be
parentf5a44db5d2d677dfbf12deee461f85e9ec633961 (diff)
ext4: fix bigalloc regression
Commit f5a44db5d2 introduced a regression on filesystems created with the bigalloc feature (cluster size > blocksize). It causes xfstests generic/006 and /013 to fail with an unexpected JBD2 failure and transaction abort that leaves the test file system in a read only state. Other xfstests run on bigalloc file systems are likely to fail as well. The cause is the accidental use of a cluster mask where a cluster offset was needed in ext4_ext_map_blocks(). Signed-off-by: Eric Whitney <enwlinux@gmail.com>
-rw-r--r--fs/ext4/extents.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 4410cc3d6ee2..3384dc4bed40 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -4218,7 +4218,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
*/
map->m_flags &= ~EXT4_MAP_FROM_CLUSTER;
newex.ee_block = cpu_to_le32(map->m_lblk);
- cluster_offset = EXT4_LBLK_CMASK(sbi, map->m_lblk);
+ cluster_offset = EXT4_LBLK_COFF(sbi, map->m_lblk);
/*
* If we are doing bigalloc, check to see if the extent returned