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[PATCH 1/2] ocfs2: Add group extend for online resize

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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>
This commit is contained in:
Tao Ma
2007-12-18 15:47:03 +08:00
committed by Mark Fasheh
parent 7f68fc2821
commit d659072f73
10 changed files with 518 additions and 7 deletions
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2
fs/ocfs2/buffer_head_io.h
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@ -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