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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2009-05-13 18:36:58 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2009-05-13 18:36:58 -0400 |
| commit | 9c1ee184a30394e54165fa4c15923cabd952c106 (patch) | |
| tree | 77fee66ccc5e4aec3aeff7c7d641691b116be091 /fs/isofs/rock.c | |
| parent | 091bf7624d1c90cec9e578a18529f615213ff847 (diff) | |
| download | kernel_samsung_smdk4412-9c1ee184a30394e54165fa4c15923cabd952c106.zip kernel_samsung_smdk4412-9c1ee184a30394e54165fa4c15923cabd952c106.tar.gz kernel_samsung_smdk4412-9c1ee184a30394e54165fa4c15923cabd952c106.tar.bz2 | |
ext4: Fix sub-block zeroing for writes into preallocated extents
We need to mark the buffer_head mapping preallocated space as new
during write_begin. Otherwise we don't zero out the page cache content
properly for a partial write. This will cause file corruption with
preallocation.
Now that we mark the buffer_head new we also need to have a valid
buffer_head blocknr so that unmap_underlying_metadata() unmaps the
correct block.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/isofs/rock.c')
0 files changed, 0 insertions, 0 deletions