ocfs2: turn __ocfs2_remove_inode_range() into ocfs2_remove_btree_range()
This patch genericizes the high level handling of extent removal.
ocfs2_remove_btree_range() is nearly identical to
__ocfs2_remove_inode_range(), except that extent tree operations have been
used where necessary. We update ocfs2_remove_inode_range() to use the
generic helper. Now extent tree based structures have an easy way to
truncate ranges.
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Acked-by: Joel Becker <joel.becker@oracle.com>
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index e2570a3..3605491 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -1226,83 +1226,6 @@
return ret;
}
-static int __ocfs2_remove_inode_range(struct inode *inode,
- struct buffer_head *di_bh,
- u32 cpos, u32 phys_cpos, u32 len,
- struct ocfs2_cached_dealloc_ctxt *dealloc)
-{
- int ret;
- u64 phys_blkno = ocfs2_clusters_to_blocks(inode->i_sb, phys_cpos);
- struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
- struct inode *tl_inode = osb->osb_tl_inode;
- handle_t *handle;
- struct ocfs2_alloc_context *meta_ac = NULL;
- struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
- struct ocfs2_extent_tree et;
-
- ocfs2_init_dinode_extent_tree(&et, inode, di_bh);
-
- ret = ocfs2_lock_allocators(inode, &et, 0, 1, NULL, &meta_ac);
- if (ret) {
- mlog_errno(ret);
- return ret;
- }
-
- mutex_lock(&tl_inode->i_mutex);
-
- if (ocfs2_truncate_log_needs_flush(osb)) {
- ret = __ocfs2_flush_truncate_log(osb);
- if (ret < 0) {
- mlog_errno(ret);
- goto out;
- }
- }
-
- handle = ocfs2_start_trans(osb, OCFS2_REMOVE_EXTENT_CREDITS);
- if (IS_ERR(handle)) {
- ret = PTR_ERR(handle);
- mlog_errno(ret);
- goto out;
- }
-
- ret = ocfs2_journal_access(handle, inode, di_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
-
- ret = ocfs2_remove_extent(inode, &et, cpos, len, handle, meta_ac,
- dealloc);
- if (ret) {
- mlog_errno(ret);
- goto out_commit;
- }
-
- OCFS2_I(inode)->ip_clusters -= len;
- di->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters);
-
- ret = ocfs2_journal_dirty(handle, di_bh);
- if (ret) {
- mlog_errno(ret);
- goto out_commit;
- }
-
- ret = ocfs2_truncate_log_append(osb, handle, phys_blkno, len);
- if (ret)
- mlog_errno(ret);
-
-out_commit:
- ocfs2_commit_trans(osb, handle);
-out:
- mutex_unlock(&tl_inode->i_mutex);
-
- if (meta_ac)
- ocfs2_free_alloc_context(meta_ac);
-
- return ret;
-}
-
/*
* Truncate a byte range, avoiding pages within partial clusters. This
* preserves those pages for the zeroing code to write to.
@@ -1402,7 +1325,9 @@
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct ocfs2_cached_dealloc_ctxt dealloc;
struct address_space *mapping = inode->i_mapping;
+ struct ocfs2_extent_tree et;
+ ocfs2_init_dinode_extent_tree(&et, inode, di_bh);
ocfs2_init_dealloc_ctxt(&dealloc);
if (byte_len == 0)
@@ -1458,9 +1383,9 @@
/* Only do work for non-holes */
if (phys_cpos != 0) {
- ret = __ocfs2_remove_inode_range(inode, di_bh, cpos,
- phys_cpos, alloc_size,
- &dealloc);
+ ret = ocfs2_remove_btree_range(inode, &et, cpos,
+ phys_cpos, alloc_size,
+ &dealloc);
if (ret) {
mlog_errno(ret);
goto out;