Btrfs: Switch to libcrc32c to avoid problems with cryptomgr on highmem machines
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 6b455c2..23f0293 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -607,7 +607,8 @@
while(count > 0) {
size_t offset = pos & (PAGE_CACHE_SIZE - 1);
- size_t write_bytes = min(count, nrptrs * PAGE_CACHE_SIZE -
+ size_t write_bytes = min(count, nrptrs *
+ (size_t)PAGE_CACHE_SIZE -
offset);
size_t num_pages = (write_bytes + PAGE_CACHE_SIZE - 1) >>
PAGE_CACHE_SHIFT;