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| author | Jan Schmidt <list.btrfs@jan-o-sch.net> | 2012-06-11 08:29:29 +0200 |
|---|---|---|
| committer | Jan Schmidt <list.btrfs@jan-o-sch.net> | 2012-06-14 18:52:09 +0200 |
| commit | 3d7806eca43e73a9721d2e09369200ed93036bd0 (patch) | |
| tree | 339d940a7cb3522169f9e2a8b14edf8b8ae15880 /fs/btrfs/ctree.c | |
| parent | Btrfs: fix return value for __tree_mod_log_oldest_root (diff) | |
| download | linux-3d7806eca43e73a9721d2e09369200ed93036bd0.tar.xz linux-3d7806eca43e73a9721d2e09369200ed93036bd0.zip | |
Btrfs: add btrfs_next_old_leaf
To make sense of the tree mod log, the backref walker not only needs
btrfs_search_old_slot, but it also called btrfs_next_leaf, which in turn was
calling btrfs_search_slot. This obviously didn't give the correct result.
This commit adds btrfs_next_old_leaf, a drop-in replacement for
btrfs_next_leaf with a time_seq parameter. If it is zero, it behaves exactly
like btrfs_next_leaf. If it is non-zero, it will use btrfs_search_old_slot
with this time_seq parameter.
Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
Diffstat (limited to 'fs/btrfs/ctree.c')
| -rw-r--r-- | fs/btrfs/ctree.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index 50d7c99ddce7..cb76b2a1b908 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -5017,6 +5017,12 @@ next: */ int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path) { + return btrfs_next_old_leaf(root, path, 0); +} + +int btrfs_next_old_leaf(struct btrfs_root *root, struct btrfs_path *path, + u64 time_seq) +{ int slot; int level; struct extent_buffer *c; @@ -5041,7 +5047,10 @@ again: path->keep_locks = 1; path->leave_spinning = 1; - ret = btrfs_search_slot(NULL, root, &key, path, 0, 0); + if (time_seq) + ret = btrfs_search_old_slot(root, &key, path, time_seq); + else + ret = btrfs_search_slot(NULL, root, &key, path, 0, 0); path->keep_locks = 0; if (ret < 0) |