diff options
| -rw-r--r-- | fs/read_write.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/read_write.c b/fs/read_write.c index 153f8f690490..f43bb12b4759 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -2003,6 +2003,9 @@ int vfs_dedupe_file_range(struct file *file, struct file_dedupe_range *same) if (off + len > i_size_read(src)) return -EINVAL; + /* Arbitrary 1G limit on a single dedupe request, can be raised. */ + len = min_t(u64, len, 1 << 30); + /* pre-format output fields to sane values */ for (i = 0; i < count; i++) { same->info[i].bytes_deduped = 0ULL; |