diff options
| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2008-10-18 20:28:00 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-20 08:52:38 -0700 |
| commit | 5ec8b75e3a2a94860ee99b5456fe1a963c8680e5 (patch) | |
| tree | 7b79032a1450c955d17ea909f001404802fc9c01 /fs/ext3/inode.c | |
| parent | 6a897cf447a83c9c3fd1b85a1e525c02d6eada7d (diff) | |
| download | linux-5ec8b75e3a2a94860ee99b5456fe1a963c8680e5.tar.gz linux-5ec8b75e3a2a94860ee99b5456fe1a963c8680e5.tar.xz | |
ext3: truncate block allocated on a failed ext3_write_begin
For blocksize < pagesize we need to remove blocks that got allocated in
block_write_begin() if we fail with ENOSPC for later blocks.
block_write_begin() internally does this if it allocated page locally.
This makes sure we don't have blocks outside inode.i_size during ENOSPC.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ext3/inode.c')
| -rw-r--r-- | fs/ext3/inode.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c index ebfec4d0148e..f8424ad89971 100644 --- a/fs/ext3/inode.c +++ b/fs/ext3/inode.c @@ -1186,6 +1186,13 @@ write_begin_failed: ext3_journal_stop(handle); unlock_page(page); page_cache_release(page); + /* + * block_write_begin may have instantiated a few blocks + * outside i_size. Trim these off again. Don't need + * i_size_read because we hold i_mutex. + */ + if (pos + len > inode->i_size) + vmtruncate(inode, inode->i_size); } if (ret == -ENOSPC && ext3_should_retry_alloc(inode->i_sb, &retries)) goto retry; |