vf/remap: return the amount of bytes actually deduplicated

When using the FIDEDUPRANGE ioctl, in case of success the requested size is returned. In some cases this might not be the actual amount of bytes deduplicated. This change modifies vfs_dedupe_file_range() to report the actual amount of bytes deduplicated, instead of the requested amount.

Ansgar Lößer committed 4 years ago

Commit 4a57a841 parent d0b97f31 file · +1 −1Browse files

Unified · Split

fs/remap_range.c+1−1

@@ -547,7 +547,7 @@ int vfs_dedupe_file_range(struct file file, struct file_dedupe_range same) · 546 unmodified lines
547	547	else if (deduped < 0)
548	548	info->status = deduped;
549	549	else
550		− info->bytes_deduped = len;
	550	+ info->bytes_deduped = deduped;
551	551
552	552	next_fdput:
553	553	fdput(dst_fd);