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ocfs2: temporarily remove extent map caching

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The code in extent_map.c is not prepared to deal with a subtree being
rotated between lookups. This can happen when filling holes in sparse files.
Instead of a lengthy patch to update the code (which would likely lose the
benefit of caching subtree roots), we remove most of the algorithms and
implement a simple path based lookup. A less ambitious extent caching scheme
will be added in a later patch.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
This commit is contained in:
Mark Fasheh
2007-01-17 12:31:35 -08:00
parent dcd0538ff4
commit 363041a5f7
14 changed files with 110 additions and 1010 deletions
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3
fs/ocfs2/journal.c
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@@ -670,8 +670,7 @@ static int ocfs2_force_read_journal(struct inode *inode)
(inode->i_blocks >> (inode->i_sb->s_blocksize_bits - 9))) {
status = ocfs2_extent_map_get_blocks(inode, v_blkno,
1, &p_blkno,
&p_blocks);
&p_blkno, &p_blocks);
if (status < 0) {
mlog_errno(status);
goto bail;