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| author | Christoph Hellwig <hch@lst.de> | 2010-06-04 11:29:53 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2010-08-09 16:47:29 -0400 |
| commit | eafdc7d190a944c755a9fe68573c193e6e0217e7 (patch) | |
| tree | 915c3cc8004706fabf88eae1ab123a3fa0147516 /fs/hfs | |
| parent | 256249584bda1a9357e2d29987a37f5b2df035f6 (diff) | |
| download | lwn-eafdc7d190a944c755a9fe68573c193e6e0217e7.tar.gz lwn-eafdc7d190a944c755a9fe68573c193e6e0217e7.zip | |
sort out blockdev_direct_IO variants
Move the call to vmtruncate to get rid of accessive blocks to the callers
in prepearation of the new truncate calling sequence. This was only done
for DIO_LOCKING filesystems, so the __blockdev_direct_IO_newtrunc variant
was not needed anyway. Get rid of blockdev_direct_IO_no_locking and
its _newtrunc variant while at it as just opencoding the two additional
paramters is shorted than the name suffix.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/hfs')
| -rw-r--r-- | fs/hfs/inode.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c index 14f5cb1b9fdc..07b2464b5716 100644 --- a/fs/hfs/inode.c +++ b/fs/hfs/inode.c @@ -112,9 +112,24 @@ static ssize_t hfs_direct_IO(int rw, struct kiocb *iocb, { struct file *file = iocb->ki_filp; struct inode *inode = file->f_path.dentry->d_inode->i_mapping->host; + ssize_t ret; - return blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov, + ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov, offset, nr_segs, hfs_get_block, NULL); + + /* + * In case of error extending write may have instantiated a few + * blocks outside i_size. Trim these off again. + */ + if (unlikely((rw & WRITE) && ret < 0)) { + loff_t isize = i_size_read(inode); + loff_t end = offset + iov_length(iov, nr_segs); + + if (end > isize) + vmtruncate(inode, isize); + } + + return ret; } static int hfs_writepages(struct address_space *mapping, |