2 files changed, 6 insertions, 6 deletions
diff --git a/src/include/storage/md.h b/src/include/storage/md.h
index bcada9ff221..8f32af9ef3d 100644
--- a/src/include/storage/md.h
+++ b/src/include/storage/md.h
@@ -27,13 +27,13 @@ extern void mdcreate(SMgrRelation reln, ForkNumber forknum, bool isRedo);
 extern bool mdexists(SMgrRelation reln, ForkNumber forknum);
 extern void mdunlink(RelFileLocatorBackend rlocator, ForkNumber forknum, bool isRedo);
 extern void mdextend(SMgrRelation reln, ForkNumber forknum,
-					 BlockNumber blocknum, char *buffer, bool skipFsync);
+					 BlockNumber blocknum, const void *buffer, bool skipFsync);
 extern bool mdprefetch(SMgrRelation reln, ForkNumber forknum,
 					   BlockNumber blocknum);
 extern void mdread(SMgrRelation reln, ForkNumber forknum, BlockNumber blocknum,
-				   char *buffer);
+				   void *buffer);
 extern void mdwrite(SMgrRelation reln, ForkNumber forknum,
-					BlockNumber blocknum, char *buffer, bool skipFsync);
+					BlockNumber blocknum, const void *buffer, bool skipFsync);
 extern void mdwriteback(SMgrRelation reln, ForkNumber forknum,
 						BlockNumber blocknum, BlockNumber nblocks);
 extern BlockNumber mdnblocks(SMgrRelation reln, ForkNumber forknum);
diff --git a/src/include/storage/smgr.h b/src/include/storage/smgr.h
index 56233c4d216..0935144f425 100644
--- a/src/include/storage/smgr.h
+++ b/src/include/storage/smgr.h
@@ -91,13 +91,13 @@ extern void smgrcreate(SMgrRelation reln, ForkNumber forknum, bool isRedo);
 extern void smgrdosyncall(SMgrRelation *rels, int nrels);
 extern void smgrdounlinkall(SMgrRelation *rels, int nrels, bool isRedo);
 extern void smgrextend(SMgrRelation reln, ForkNumber forknum,
-					   BlockNumber blocknum, char *buffer, bool skipFsync);
+					   BlockNumber blocknum, const void *buffer, bool skipFsync);
 extern bool smgrprefetch(SMgrRelation reln, ForkNumber forknum,
 						 BlockNumber blocknum);
 extern void smgrread(SMgrRelation reln, ForkNumber forknum,
-					 BlockNumber blocknum, char *buffer);
+					 BlockNumber blocknum, void *buffer);
 extern void smgrwrite(SMgrRelation reln, ForkNumber forknum,
-					  BlockNumber blocknum, char *buffer, bool skipFsync);
+					  BlockNumber blocknum, const void *buffer, bool skipFsync);
 extern void smgrwriteback(SMgrRelation reln, ForkNumber forknum,
 						  BlockNumber blocknum, BlockNumber nblocks);
 extern BlockNumber smgrnblocks(SMgrRelation reln, ForkNumber forknum);