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| author |   Allison Henderson <achender@linux.vnet.ibm.com> | 2011-05-16 10:11:09 -0400 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2011-05-16 10:11:09 -0400 |
| commit | 9b940f8e8c32456c8a6428fa4313a4bcca7b4fcb (patch) | |
| tree | 24b784d45ad077461bdc76faf5e0fa0125eed0ec /fs/ext4 | |
| parent | ext4: fix oops in ext4_quota_off() (diff) | |
| download | linux-dev-9b940f8e8c32456c8a6428fa4313a4bcca7b4fcb.tar.xz linux-dev-9b940f8e8c32456c8a6428fa4313a4bcca7b4fcb.zip | |
ext4: ext4_ext_convert_to_initialized bug found in extended FSX testing
This patch addresses bugs found while testing punch hole
with the fsx test. The patch corrects the number of blocks
that are zeroed out while splitting an extent, and also corrects
the return value to return the number of blocks split out, instead
of the number of blocks zeroed out.
This patch has been tested in addition to the following patches:
[Ext4 punch hole v7]
[XFS Tests Punch Hole 1/1 v2] Add Punch Hole Testing to FSX
The test ran successfully for 24 hours.
Signed-off-by: Allison Henderson <achender@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/extents.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index e363f21b091b..5f243da8ff1d 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -2818,8 +2818,8 @@ static int ext4_ext_convert_to_initialized(handle_t *handle, (EXT4_EXT_MAY_ZEROOUT & split_flag)) { /* case 3 */ zero_ex.ee_block = - cpu_to_le32(map->m_lblk + map->m_len); - zero_ex.ee_len = cpu_to_le16(allocated - map->m_len); + cpu_to_le32(map->m_lblk); + zero_ex.ee_len = cpu_to_le16(allocated); ext4_ext_store_pblock(&zero_ex, ext4_ext_pblock(ex) + map->m_lblk - ee_block); err = ext4_ext_zeroout(inode, &zero_ex); @@ -2842,10 +2842,9 @@ static int ext4_ext_convert_to_initialized(handle_t *handle, goto out; } - allocated = map->m_lblk - ee_block + map->m_len; - split_map.m_lblk = ee_block; - split_map.m_len = allocated; + split_map.m_len = map->m_lblk - ee_block + map->m_len; + allocated = map->m_len; } } |