In function find_workspace, it's allowed to alloc cpus + 1 workspaces at most, but in function free_workspace, it will freed the workspace if there exists more then cpus' workspaces.
The two limits doesn't match. I thought the original itention is allowed to alloc cpus compression workspaces at most. Signed-off-by: Rock Lee <geekerrock...@gmail.com> --- fs/btrfs/compression.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c index c6467aa..eef1811 100644 --- a/fs/btrfs/compression.c +++ b/fs/btrfs/compression.c @@ -779,7 +779,7 @@ again: return workspace; } - if (atomic_read(alloc_workspace) > cpus) { + if (atomic_read(alloc_workspace) >= cpus) { DEFINE_WAIT(wait); spin_unlock(workspace_lock); -- 1.7.7.6 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html