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| author | Tao Ma <tao.ma@oracle.com> | 2007-12-18 15:47:03 +0800 |
|---|---|---|
| committer | Mark Fasheh <mark.fasheh@oracle.com> | 2008-01-25 14:53:35 -0800 |
| commit | d659072f736837e56b6433d58e5315ad1d4d5ccf (patch) | |
| tree | 56882b7b36c6b60a8208f6ed5bee9904adc7b649 /fs/ocfs2/journal.h | |
| parent | 7f68fc28219be3b44ef4132f95c6506ff3e806b5 (diff) | |
[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/journal.h')
| -rw-r--r-- | fs/ocfs2/journal.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/ocfs2/journal.h b/fs/ocfs2/journal.h index 4b32e096156..0ba3a421ccf 100644 --- a/fs/ocfs2/journal.h +++ b/fs/ocfs2/journal.h @@ -278,6 +278,9 @@ int ocfs2_journal_dirty_data(handle_t *handle, /* simple file updates like chmod, etc. */ #define OCFS2_INODE_UPDATE_CREDITS 1 +/* group extend. inode update and last group update. */ +#define OCFS2_GROUP_EXTEND_CREDITS (OCFS2_INODE_UPDATE_CREDITS + 1) + /* get one bit out of a suballocator: dinode + group descriptor + * prev. group desc. if we relink. */ #define OCFS2_SUBALLOC_ALLOC (3) |