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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/journal.h
parent7f68fc28219be3b44ef4132f95c6506ff3e806b5 (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.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/ocfs2/journal.h b/fs/ocfs2/journal.h
index 4b32e0961568..0ba3a421ccf2 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)