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| author | Tao Ma <tao.ma@oracle.com> | 2008-08-18 17:38:44 +0800 |
|---|---|---|
| committer | Mark Fasheh <mfasheh@suse.com> | 2008-10-13 13:57:58 -0700 |
| commit | e7d4cb6bc19658646357eeff134645cd9bc3479f (patch) | |
| tree | 4e24321e5c28fb90dffa1f396972fddb3c458e58 /fs/ocfs2/aops.c | |
| parent | 811f933df1e55615fd0bb4818f31e3868a8e6e23 (diff) | |
| download | linux-e7d4cb6bc19658646357eeff134645cd9bc3479f.tar.gz linux-e7d4cb6bc19658646357eeff134645cd9bc3479f.tar.bz2 linux-e7d4cb6bc19658646357eeff134645cd9bc3479f.zip | |
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.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c index bbe3f8b2d0e2..44ea5eb3fdc4 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) { |