Comment 94 for bug 1167114

git bisect log
# bad: [952b77ad6885b9db4837853a88f5c931dee553d6] UBUNTU: Ubuntu-3.5.0-27.43
# good: [7c088a33fdd4ac05ec70bd1031e3e932d0dee883] UBUNTU: Ubuntu-3.5.0-26.42
git bisect start 'Ubuntu-3.5.0-27.43' 'Ubuntu-3.5.0-26.42'
# good: [5528a50f5164e8807647aae932c8261733ea868d] ext4: check bh in ext4_read_block_bitmap()
git bisect good 5528a50f5164e8807647aae932c8261733ea868d
# bad: [310871eacb882ad9252da3080dbf45bf8988ff8c] sparc64: Fix gfp_flags setting in tsb_grow().
git bisect bad 310871eacb882ad9252da3080dbf45bf8988ff8c