Commit 24ae6365 authored by Yan, Zheng's avatar Yan, Zheng Committed by Chris Mason
Browse files

Btrfs: Fix page leak in compressed writeback path



"start + num_bytes >= actual_end" can happen when compressed page writeback races
with file truncation. In that case we need unlock and release pages past the end
of file.
Signed-off-by: default avatarYan, Zheng <zheng.z.yan@intel.com>
Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
parent 84cd948c
...@@ -495,7 +495,7 @@ again: ...@@ -495,7 +495,7 @@ again:
add_async_extent(async_cow, start, num_bytes, add_async_extent(async_cow, start, num_bytes,
total_compressed, pages, nr_pages_ret); total_compressed, pages, nr_pages_ret);
if (start + num_bytes < end && start + num_bytes < actual_end) { if (start + num_bytes < end) {
start += num_bytes; start += num_bytes;
pages = NULL; pages = NULL;
cond_resched(); cond_resched();
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment