basic/missing_magic: drop unnecessary entries and update comments

src/basic/missing_magic.h

@@ -3,41 +3,6 @@
 
 #include <linux/magic.h>
 
-/* 62aa81d7c4c24b90fdb61da70ac0dbbc414f9939 (4.13) */
-#ifndef OCFS2_SUPER_MAGIC
-#  define OCFS2_SUPER_MAGIC 0x7461636f
-#else
-assert_cc(OCFS2_SUPER_MAGIC == 0x7461636f);
-#endif
-
-/* 67e9c74b8a873408c27ac9a8e4c1d1c8d72c93ff (4.5) */
-#ifndef CGROUP2_SUPER_MAGIC
-#  define CGROUP2_SUPER_MAGIC 0x63677270
-#else
-assert_cc(CGROUP2_SUPER_MAGIC == 0x63677270);
-#endif
-
-/* 4282d60689d4f21b40692029080440cc58e8a17d (4.1) */
-#ifndef TRACEFS_MAGIC
-#  define TRACEFS_MAGIC 0x74726163
-#else
-assert_cc(TRACEFS_MAGIC == 0x74726163);
-#endif
-
-/* e149ed2b805fefdccf7ccdfc19eca22fdd4514ac (3.19) */
-#ifndef NSFS_MAGIC
-#  define NSFS_MAGIC 0x6e736673
-#else
-assert_cc(NSFS_MAGIC == 0x6e736673);
-#endif
-
-/* b2197755b2633e164a439682fb05a9b5ea48f706 (4.4) */
-#ifndef BPF_FS_MAGIC
-#  define BPF_FS_MAGIC 0xcafe4a11
-#else
-assert_cc(BPF_FS_MAGIC == 0xcafe4a11);
-#endif
-
 /* Not exposed yet (4.20). Defined at ipc/mqueue.c */
 #ifndef MQUEUE_MAGIC
 #  define MQUEUE_MAGIC 0x19800202
@@ -45,146 +10,34 @@ assert_cc(BPF_FS_MAGIC == 0xcafe4a11);
 assert_cc(MQUEUE_MAGIC == 0x19800202);
 #endif
 
-/* Not exposed yet (as of Linux 5.4). Defined in fs/xfs/libxfs/xfs_format.h */
-#ifndef XFS_SB_MAGIC
-#  define XFS_SB_MAGIC 0x58465342
-#else
-assert_cc(XFS_SB_MAGIC == 0x58465342);
-#endif
-
-/* dea2903719283c156b53741126228c4a1b40440f (5.17) */
-#ifndef CIFS_SUPER_MAGIC
-#  define CIFS_SUPER_MAGIC 0xFF534D42
-#else
-assert_cc(CIFS_SUPER_MAGIC == 0xFF534D42);
-#endif
-
-/* dea2903719283c156b53741126228c4a1b40440f (5.17) */
-#ifndef SMB2_SUPER_MAGIC
-#  define SMB2_SUPER_MAGIC 0xFE534D42
-#else
-assert_cc(SMB2_SUPER_MAGIC == 0xFE534D42);
-#endif
-
-/* 257f871993474e2bde6c497b54022c362cf398e1 (4.5) */
-#ifndef OVERLAYFS_SUPER_MAGIC
-#  define OVERLAYFS_SUPER_MAGIC 0x794c7630
-#else
-assert_cc(OVERLAYFS_SUPER_MAGIC == 0x794c7630);
-#endif
-
-/* 2a28900be20640fcd1e548b1e3bad79e8221fcf9 (4.7) */
-#ifndef UDF_SUPER_MAGIC
-#  define UDF_SUPER_MAGIC 0x15013346
-#else
-assert_cc(UDF_SUPER_MAGIC == 0x15013346);
-#endif
-
-/* b1123ea6d3b3da25af5c8a9d843bd07ab63213f4 (4.8) */
+/* b1123ea6d3b3da25af5c8a9d843bd07ab63213f4 (4.8), dropped by 68f2736a858324c3ec852f6c2cddd9d1c777357d (v6.0) */
 #ifndef BALLOON_KVM_MAGIC
 #  define BALLOON_KVM_MAGIC 0x13661366
 #else
 assert_cc(BALLOON_KVM_MAGIC == 0x13661366);
 #endif
 
-/* 48b4800a1c6af2cdda344ea4e2c843dcc1f6afc9 (4.8) */
+/* 48b4800a1c6af2cdda344ea4e2c843dcc1f6afc9 (4.8), dropped by 68f2736a858324c3ec852f6c2cddd9d1c777357d (v6.0) */
 #ifndef ZSMALLOC_MAGIC
 #  define ZSMALLOC_MAGIC 0x58295829
 #else
 assert_cc(ZSMALLOC_MAGIC == 0x58295829);
 #endif
 
-/* 3bc52c45bac26bf7ed1dc8d287ad1aeaed1250b6 (4.9) */
-#ifndef DAXFS_MAGIC
-#  define DAXFS_MAGIC 0x64646178
-#else
-assert_cc(DAXFS_MAGIC == 0x64646178);
-#endif
-
-/* 5ff193fbde20df5d80fec367cea3e7856c057320 (4.10) */
-#ifndef RDTGROUP_SUPER_MAGIC
-#  define RDTGROUP_SUPER_MAGIC 0x7655821
-#else
-assert_cc(RDTGROUP_SUPER_MAGIC == 0x7655821);
-#endif
-
-/* a481f4d917835cad86701fc0d1e620c74bb5cd5f (4.13) */
-#ifndef AAFS_MAGIC
-#  define AAFS_MAGIC 0x5a3c69f0
-#else
-assert_cc(AAFS_MAGIC == 0x5a3c69f0);
-#endif
-
-/* f044c8847bb61eff5e1e95b6f6bb950e7f4a73a4 (4.15) */
-#ifndef AFS_FS_MAGIC
-#  define AFS_FS_MAGIC 0x6b414653
-#else
-assert_cc(AFS_FS_MAGIC == 0x6b414653);
-#endif
-
-/* dddde68b8f06dd83486124b8d245e7bfb15c185d (4.20) */
-#ifndef XFS_SUPER_MAGIC
-#  define XFS_SUPER_MAGIC 0x58465342
-#else
-assert_cc(XFS_SUPER_MAGIC == 0x58465342);
-#endif
-
-/* 3ad20fe393b31025bebfc2d76964561f65df48aa (5.0) */
-#ifndef BINDERFS_SUPER_MAGIC
-#  define BINDERFS_SUPER_MAGIC 0x6c6f6f70
-#else
-assert_cc(BINDERFS_SUPER_MAGIC == 0x6c6f6f70);
-#endif
-
-/* ed63bb1d1f8469586006a9ca63c42344401aa2ab (5.3) */
-#ifndef DMA_BUF_MAGIC
-#  define DMA_BUF_MAGIC 0x444d4142
-#else
-assert_cc(DMA_BUF_MAGIC == 0x444d4142);
-#endif
-
-/* ea8157ab2ae5e914dd427e5cfab533b6da3819cd (5.3) */
+/* ea8157ab2ae5e914dd427e5cfab533b6da3819cd (5.3), dropped by 68f2736a858324c3ec852f6c2cddd9d1c777357d (v6.0) */
 #ifndef Z3FOLD_MAGIC
 #  define Z3FOLD_MAGIC 0x33
 #else
 assert_cc(Z3FOLD_MAGIC == 0x33);
 #endif
 
-/* 47e4937a4a7ca4184fd282791dfee76c6799966a (5.4) */
-#ifndef EROFS_SUPER_MAGIC_V1
-#  define EROFS_SUPER_MAGIC_V1 0xe0f5e1e2
-#else
-assert_cc(EROFS_SUPER_MAGIC_V1 == 0xe0f5e1e2);
-#endif
-
-/* fe030c9b85e6783bc52fe86449c0a4b8aa16c753 (5.5) */
+/* fe030c9b85e6783bc52fe86449c0a4b8aa16c753 (5.5), dropped by 68f2736a858324c3ec852f6c2cddd9d1c777357d (v6.0) */
 #ifndef PPC_CMM_MAGIC
 #  define PPC_CMM_MAGIC 0xc7571590
 #else
 assert_cc(PPC_CMM_MAGIC == 0xc7571590);
 #endif
 
-/* 8dcc1a9d90c10fa4143e5c17821082e5e60e46a1 (5.6) */
-#ifndef ZONEFS_MAGIC
-#  define ZONEFS_MAGIC 0x5a4f4653
-#else
-assert_cc(ZONEFS_MAGIC == 0x5a4f4653);
-#endif
-
-/* 3234ac664a870e6ea69ae3a57d824cd7edbeacc5 (5.8) */
-#ifndef DEVMEM_MAGIC
-#  define DEVMEM_MAGIC 0x454d444d
-#else
-assert_cc(DEVMEM_MAGIC == 0x454d444d);
-#endif
-
-/* cb12fd8e0dabb9a1c8aef55a6a41e2c255fcdf4b (6.8) */
-#ifndef PID_FS_MAGIC
-#  define PID_FS_MAGIC 0x50494446
-#else
-assert_cc(PID_FS_MAGIC == 0x50494446);
-#endif
-
 /* Not in mainline but included in Ubuntu */
 #ifndef SHIFTFS_MAGIC
 #  define SHIFTFS_MAGIC 0x6a656a62
@@ -192,20 +45,6 @@ assert_cc(PID_FS_MAGIC == 0x50494446);
 assert_cc(SHIFTFS_MAGIC == 0x6a656a62);
 #endif
 
-/* 1507f51255c9ff07d75909a84e7c0d7f3c4b2f49 (5.14) */
-#ifndef SECRETMEM_MAGIC
-#  define SECRETMEM_MAGIC 0x5345434d
-#else
-assert_cc(SECRETMEM_MAGIC == 0x5345434d);
-#endif
-
-/* Not exposed yet. Defined at fs/fuse/inode.c */
-#ifndef FUSE_SUPER_MAGIC
-#  define FUSE_SUPER_MAGIC 0x65735546
-#else
-assert_cc(FUSE_SUPER_MAGIC == 0x65735546);
-#endif
-
 /* Not exposed yet. Defined at fs/fuse/control.c */
 #ifndef FUSE_CTL_SUPER_MAGIC
 #  define FUSE_CTL_SUPER_MAGIC 0x65735543
@@ -213,13 +52,6 @@ assert_cc(FUSE_SUPER_MAGIC == 0x65735546);
 assert_cc(FUSE_CTL_SUPER_MAGIC == 0x65735543);
 #endif
 
-/* Not exposed yet. Defined at fs/ceph/super.h */
-#ifndef CEPH_SUPER_MAGIC
-#  define CEPH_SUPER_MAGIC 0x00c36400
-#else
-assert_cc(CEPH_SUPER_MAGIC == 0x00c36400);
-#endif
-
 /* Not exposed yet. Defined at fs/orangefs/orangefs-kernel.h */
 #ifndef ORANGEFS_DEVREQ_MAGIC
 #  define ORANGEFS_DEVREQ_MAGIC 0x20030529
@@ -248,13 +80,6 @@ assert_cc(CONFIGFS_MAGIC == 0x62656570);
 assert_cc(VBOXSF_SUPER_MAGIC == 0x786f4256);
 #endif
 
-/* Not exposed yet. Defined at fs/exfat/exfat_fs.h */
-#ifndef EXFAT_SUPER_MAGIC
-#  define EXFAT_SUPER_MAGIC 0x2011BAB0UL
-#else
-assert_cc(EXFAT_SUPER_MAGIC == 0x2011BAB0UL);
-#endif
-
 /* Not exposed yet, internally actually called RPCAUTH_GSSMAGIC. Defined in net/sunrpc/rpc_pipe.c */
 #ifndef RPC_PIPEFS_SUPER_MAGIC
 #  define RPC_PIPEFS_SUPER_MAGIC 0x67596969