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authorTao Ma <tao.ma@oracle.com>2008-08-18 17:38:44 +0800
committerMark Fasheh <mfasheh@suse.com>2008-10-13 13:57:58 -0700
commite7d4cb6bc19658646357eeff134645cd9bc3479f (patch)
tree4e24321e5c28fb90dffa1f396972fddb3c458e58 /fs/ocfs2/aops.c
parent811f933df1e55615fd0bb4818f31e3868a8e6e23 (diff)
ocfs2: Abstract ocfs2_extent_tree in b-tree operations.
In the old extent tree operation, we take the hypothesis that we are using the ocfs2_extent_list in ocfs2_dinode as the tree root. As xattr will also use ocfs2_extent_list to store large value for a xattr entry, we refactor the tree operation so that xattr can use it directly. The refactoring includes 4 steps: 1. Abstract set/get of last_eb_blk and update_clusters since they may be stored in different location for dinode and xattr. 2. Add a new structure named ocfs2_extent_tree to indicate the extent tree the operation will work on. 3. Remove all the use of fe_bh and di, use root_bh and root_el in extent tree instead. So now all the fe_bh is replaced with et->root_bh, el with root_el accordingly. 4. Make ocfs2_lock_allocators generic. Now it is limited to be only used in file extend allocation. But the whole function is useful when we want to store large EAs. Note: This patch doesn't touch ocfs2_commit_truncate() since it is not used for anything other than truncate inode data btrees. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Diffstat (limited to 'fs/ocfs2/aops.c')
-rw-r--r--fs/ocfs2/aops.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index bbe3f8b2d0e..44ea5eb3fdc 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -1278,7 +1278,8 @@ static int ocfs2_write_cluster(struct address_space *mapping,
} else if (unwritten) {
ret = ocfs2_mark_extent_written(inode, wc->w_di_bh,
wc->w_handle, cpos, 1, phys,
- meta_ac, &wc->w_dealloc);
+ meta_ac, &wc->w_dealloc,
+ OCFS2_DINODE_EXTENT);
if (ret < 0) {
mlog_errno(ret);
goto out;
@@ -1712,7 +1713,13 @@ int ocfs2_write_begin_nolock(struct address_space *mapping,
* ocfs2_lock_allocators(). It greatly over-estimates
* the work to be done.
*/
- ret = ocfs2_lock_allocators(inode, wc->w_di_bh,
+ mlog(0, "extend inode %llu, i_size = %lld, di->i_clusters = %u,"
+ " clusters_to_add = %u, extents_to_split = %u\n",
+ (unsigned long long)OCFS2_I(inode)->ip_blkno,
+ (long long)i_size_read(inode), le32_to_cpu(di->i_clusters),
+ clusters_to_alloc, extents_to_split);
+
+ ret = ocfs2_lock_allocators(inode, wc->w_di_bh, &di->id2.i_list,
clusters_to_alloc, extents_to_split,
&data_ac, &meta_ac);
if (ret) {