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-rw-r--r--fs/btrfs/send.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/btrfs/send.h b/fs/btrfs/send.h
index f7585cfa7e52..4f5509cb1803 100644
--- a/fs/btrfs/send.h
+++ b/fs/btrfs/send.h
@@ -18,10 +18,12 @@
#endif
/*
- * In send stream v1, no command is larger than 64K. In send stream v2, no limit
- * should be assumed.
+ * In send stream v1, no command is larger than 64K. In send stream v2, no
+ * limit should be assumed, the buffer size is set to be a header with
+ * compressed extent size.
*/
#define BTRFS_SEND_BUF_SIZE_V1 SZ_64K
+#define BTRFS_SEND_BUF_SIZE_V2 ALIGN(SZ_16K + BTRFS_MAX_COMPRESSED, PAGE_SIZE)
struct inode;
struct btrfs_ioctl_send_args;