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authorTao Ma <tao.ma@oracle.com>2007-12-18 15:47:03 +0800
committerMark Fasheh <mark.fasheh@oracle.com>2008-01-25 14:53:35 -0800
commitd659072f736837e56b6433d58e5315ad1d4d5ccf (patch)
tree56882b7b36c6b60a8208f6ed5bee9904adc7b649 /fs/ocfs2/buffer_head_io.h
parent7f68fc28219be3b44ef4132f95c6506ff3e806b5 (diff)
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[PATCH 1/2] ocfs2: Add group extend for online resize
This patch adds the ability for a userspace program to request an extend of last cluster group on an Ocfs2 file system. The request is made via ioctl, OCFS2_IOC_GROUP_EXTEND. This is derived from EXT3_IOC_GROUP_EXTEND, but is obviously Ocfs2 specific. tunefs.ocfs2 would call this for an online-resize operation if the last cluster group isn't full. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Diffstat (limited to 'fs/ocfs2/buffer_head_io.h')
-rw-r--r--fs/ocfs2/buffer_head_io.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ocfs2/buffer_head_io.h b/fs/ocfs2/buffer_head_io.h
index 6cc20930fac3..c2e78614c3e5 100644
--- a/fs/ocfs2/buffer_head_io.h
+++ b/fs/ocfs2/buffer_head_io.h
@@ -47,6 +47,8 @@ int ocfs2_read_blocks(struct ocfs2_super *osb,
int flags,
struct inode *inode);
+int ocfs2_write_super_or_backup(struct ocfs2_super *osb,
+ struct buffer_head *bh);
#define OCFS2_BH_CACHED 1
#define OCFS2_BH_READAHEAD 8