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Btrfs: kill the pinned_mutex

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This patch removes the pinned_mutex.  The extent io map has an internal tree
lock that protects the tree itself, and since we only copy the extent io map
when we are committing the transaction we don't need it there.  We also don't
need it when caching the block group since searching through the tree is also
protected by the internal map spin lock.

Signed-off-by: Josef Bacik <jbacik@redhat.com>
This commit is contained in:
Josef Bacik
2009-04-03 10:14:18 -04:00
committed by Chris Mason
parent 6226cb0a5e
commit 04018de5d4
4 changed files with 1 additions and 16 deletions
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4
fs/btrfs/tree-log.c
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@@ -262,11 +262,9 @@ static int process_one_buffer(struct btrfs_root *log,
struct extent_buffer *eb,
struct walk_control *wc, u64 gen)
{
if (wc->pin) {
mutex_lock(&log->fs_info->pinned_mutex);
if (wc->pin)
btrfs_update_pinned_extents(log->fs_info->extent_root,
eb->start, eb->len, 1);
}
if (btrfs_buffer_uptodate(eb, gen)) {
if (wc->write)