f2fs-tools: add the max chunk size limit in sparse image

Malloc Failure occurs in 32bit Windows, when using fastboot.exe flash the
 f2fs sparse image filling with  up to 2G chunk size.

Signed-off-by: Gao Ming <gaoming20@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

diff --git a/lib/libf2fs_io.c b/lib/libf2fs_io.c
index 76d283d..47917ab 100644 (file)
--- a/lib/libf2fs_io.c
+++ b/lib/libf2fs_io.c
@@ -311,6 +311,7 @@ int f2fs_init_sparse_file(void)
 #endif
 }
 
+#define MAX_CHUNK_SIZE (1 * 1024 * 1024 * 1024ULL)
 int f2fs_finalize_device(void)
 {
        int i;
@@ -337,6 +338,12 @@ int f2fs_finalize_device(void)
                                chunk_start = -1;
                        } else if (blocks[j] && chunk_start == -1) {
                                chunk_start = j;
+                       } else if (blocks[j] && (chunk_start != -1) &&
+                                (j + 1 - chunk_start >=
+                                       (MAX_CHUNK_SIZE / F2FS_BLKSIZE))) {
+                               ret = sparse_merge_blocks(chunk_start,
+                                                         j + 1 - chunk_start);
+                               chunk_start = -1;
                        }
                        ASSERT(!ret);
                }