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authorChristoph Hellwig <hch@lst.de>2010-06-04 11:29:53 +0200
committerAl Viro <viro@zeniv.linux.org.uk>2010-08-09 16:47:29 -0400
commiteafdc7d190a944c755a9fe68573c193e6e0217e7 (patch)
tree915c3cc8004706fabf88eae1ab123a3fa0147516 /fs/nilfs2/inode.c
parent256249584bda1a9357e2d29987a37f5b2df035f6 (diff)
downloadlinux-eafdc7d190a944c755a9fe68573c193e6e0217e7.tar.gz
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/nilfs2/inode.c')
-rw-r--r--fs/nilfs2/inode.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index 39e038ac8fc..1dd9e6a7d78 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -237,6 +237,19 @@ nilfs_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov,
/* Needs synchronization with the cleaner */
size = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
offset, nr_segs, nilfs_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) && size < 0)) {
+ loff_t isize = i_size_read(inode);
+ loff_t end = offset + iov_length(iov, nr_segs);
+
+ if (end > isize)
+ vmtruncate(inode, isize);
+ }
+
return size;
}