[Ocfs2-devel] [PATCH 7/8] Ocfs2: move entire/partial extent.
Tristan Ye
tristan.ye at oracle.com
Tue Dec 28 03:40:47 PST 2010
The only difference between ocfs2_move_extent() and ocfs2_defrag_extent() is
that former one didn't claim new clusters itself;)
Signed-off-by: Tristan Ye <tristan.ye at oracle.com>
---
fs/ocfs2/move_extents.c | 50 +++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 50 insertions(+), 0 deletions(-)
diff --git a/fs/ocfs2/move_extents.c b/fs/ocfs2/move_extents.c
index 6d2d130..02d4d01 100644
--- a/fs/ocfs2/move_extents.c
+++ b/fs/ocfs2/move_extents.c
@@ -396,6 +396,56 @@ out:
return ret;
}
+static int ocfs2_move_extent(struct ocfs2_move_extents_context *context,
+ u32 cpos, u32 phys_cpos, u32 new_phys_cpos,
+ u32 len, int flags)
+{
+ int ret, credits = 0;
+ handle_t *handle;
+ struct inode *inode = context->inode;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ struct inode *tl_inode = osb->osb_tl_inode;
+
+ ret = ocfs2_lock_allocators_move_extents(inode, &context->et, len, 1,
+ &context->meta_ac,
+ NULL, 0, &credits);
+ if (ret) {
+ mlog_errno(ret);
+ return ret;
+ }
+
+ mutex_lock(&tl_inode->i_mutex);
+
+ handle = ocfs2_start_trans(osb, credits);
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
+ mlog_errno(ret);
+ goto out;
+ }
+
+ ret = __ocfs2_move_extent(handle, context, cpos, len, phys_cpos,
+ new_phys_cpos);
+ if (ret)
+ mlog_errno(ret);
+
+ ocfs2_commit_trans(osb, handle);
+
+out:
+ mutex_unlock(&tl_inode->i_mutex);
+
+ if (context->data_ac) {
+ ocfs2_free_alloc_context(context->data_ac);
+ context->data_ac = NULL;
+ }
+
+ if (context->meta_ac) {
+ ocfs2_free_alloc_context(context->meta_ac);
+ context->meta_ac = NULL;
+ }
+
+ return ret;
+}
+
static int ocfs2_move_extents(struct ocfs2_move_extents_context *context)
{
int status;
--
1.5.5
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