Merge remote-tracking branch 'upstream/master' into fix_20726

1 files changed, 18 insertions, 9 deletions

diff --git a/src/nvim/memfile.h b/src/nvim/memfile.h
index 085fa22f12..687ac042a4 100644
--- a/src/nvim/memfile.h
+++ b/src/nvim/memfile.h
@@ -1,16 +1,25 @@
-#ifndef NVIM_MEMFILE_H
-#define NVIM_MEMFILE_H
+#pragma once
 
-#include "nvim/buffer_defs.h"
-#include "nvim/memfile_defs.h"
+#include "nvim/buffer_defs.h"  // IWYU pragma: keep
+#include "nvim/memfile_defs.h"  // IWYU pragma: export
 
 /// flags for mf_sync()
-#define MFS_ALL         1       /// also sync blocks with negative numbers
-#define MFS_STOP        2       /// stop syncing when a character is available
-#define MFS_FLUSH       4       /// flushed file to disk
-#define MFS_ZERO        8       /// only write block 0
+enum {
+  MFS_ALL   = 1,  ///< also sync blocks with negative numbers
+  MFS_STOP  = 2,  ///< stop syncing when a character is available
+  MFS_FLUSH = 4,  ///< flushed file to disk
+  MFS_ZERO  = 8,  ///< only write block 0
+};
+
+enum {
+  /// Minimal size for block 0 of a swap file.
+  /// NOTE: This depends on size of struct block0! It's not done with a sizeof(),
+  /// because struct block0 is defined in memline.c (Sorry).
+  /// The maximal block size is arbitrary.
+  MIN_SWAP_PAGE_SIZE = 1048,
+  MAX_SWAP_PAGE_SIZE = 50000,
+};
 
 #ifdef INCLUDE_GENERATED_DECLARATIONS
 # include "memfile.h.generated.h"
 #endif
-#endif  // NVIM_MEMFILE_H