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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>
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f5a44db5d2
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@ -4218,7 +4218,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
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*/
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map->m_flags &= ~EXT4_MAP_FROM_CLUSTER;
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newex.ee_block = cpu_to_le32(map->m_lblk);
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cluster_offset = EXT4_LBLK_CMASK(sbi, map->m_lblk);
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cluster_offset = EXT4_LBLK_COFF(sbi, map->m_lblk);
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/*
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* If we are doing bigalloc, check to see if the extent returned
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