sysv: Remove the filesystem

Since 2002 (change "Replace BKL for chain locking with sysvfs-private
rwlock") the sysv filesystem was doing IO under a rwlock in its
get_block() function (yes, a non-sleepable lock hold over a function
used to read inode metadata for all reads and writes).  Nobody noticed
until syzbot in 2023 [1]. This shows nobody is using the filesystem.
Just drop it.

[1] https://lore.kernel.org/all/0000000000000ccf9a05ee84f5b0@google.com/

Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20250220163940.10155-2-jack@suse.cz
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>

12 files changed, 0 insertions, 12 deletions

diff --git a/arch/m68k/configs/amiga_defconfig b/arch/m68k/configs/amiga_defconfig
index dbf2ea561c85..68a2e299ea71 100644
--- a/arch/m68k/configs/amiga_defconfig
+++ b/arch/m68k/configs/amiga_defconfig
@@ -486,7 +486,6 @@ CONFIG_OMFS_FS=m
 CONFIG_HPFS_FS=m
 CONFIG_QNX4FS_FS=m
 CONFIG_QNX6FS_FS=m
-CONFIG_SYSV_FS=m
 CONFIG_UFS_FS=m
 CONFIG_EROFS_FS=m
 CONFIG_NFS_FS=y
diff --git a/arch/m68k/configs/apollo_defconfig b/arch/m68k/configs/apollo_defconfig
index b0fd199cc0a4..3696d0c19579 100644
--- a/arch/m68k/configs/apollo_defconfig
+++ b/arch/m68k/configs/apollo_defconfig
@@ -443,7 +443,6 @@ CONFIG_OMFS_FS=m
 CONFIG_HPFS_FS=m
 CONFIG_QNX4FS_FS=m
 CONFIG_QNX6FS_FS=m
-CONFIG_SYSV_FS=m
 CONFIG_UFS_FS=m
 CONFIG_EROFS_FS=m
 CONFIG_NFS_FS=y
diff --git a/arch/m68k/configs/atari_defconfig b/arch/m68k/configs/atari_defconfig
index bb5b2d3b6c10..dbd4b58b724c 100644
--- a/arch/m68k/configs/atari_defconfig
+++ b/arch/m68k/configs/atari_defconfig
@@ -463,7 +463,6 @@ CONFIG_OMFS_FS=m
 CONFIG_HPFS_FS=m
 CONFIG_QNX4FS_FS=m
 CONFIG_QNX6FS_FS=m
-CONFIG_SYSV_FS=m
 CONFIG_UFS_FS=m
 CONFIG_EROFS_FS=m
 CONFIG_NFS_FS=y
diff --git a/arch/m68k/configs/bvme6000_defconfig b/arch/m68k/configs/bvme6000_defconfig
index 8315a13bab73..95178e66703f 100644
--- a/arch/m68k/configs/bvme6000_defconfig
+++ b/arch/m68k/configs/bvme6000_defconfig
@@ -435,7 +435,6 @@ CONFIG_OMFS_FS=m
 CONFIG_HPFS_FS=m
 CONFIG_QNX4FS_FS=m
 CONFIG_QNX6FS_FS=m
-CONFIG_SYSV_FS=m
 CONFIG_UFS_FS=m
 CONFIG_EROFS_FS=m
 CONFIG_NFS_FS=y
diff --git a/arch/m68k/configs/hp300_defconfig b/arch/m68k/configs/hp300_defconfig
index 350370657e5f..68372a0b05ac 100644
--- a/arch/m68k/configs/hp300_defconfig
+++ b/arch/m68k/configs/hp300_defconfig
@@ -445,7 +445,6 @@ CONFIG_OMFS_FS=m
 CONFIG_HPFS_FS=m
 CONFIG_QNX4FS_FS=m
 CONFIG_QNX6FS_FS=m
-CONFIG_SYSV_FS=m
 CONFIG_UFS_FS=m
 CONFIG_EROFS_FS=m
 CONFIG_NFS_FS=y
diff --git a/arch/m68k/configs/mac_defconfig b/arch/m68k/configs/mac_defconfig
index f942b4755702..a9beb4ec8a15 100644
--- a/arch/m68k/configs/mac_defconfig
+++ b/arch/m68k/configs/mac_defconfig
@@ -462,7 +462,6 @@ CONFIG_OMFS_FS=m
 CONFIG_HPFS_FS=m
 CONFIG_QNX4FS_FS=m
 CONFIG_QNX6FS_FS=m
-CONFIG_SYSV_FS=m
 CONFIG_UFS_FS=m
 CONFIG_EROFS_FS=m
 CONFIG_NFS_FS=y
diff --git a/arch/m68k/configs/multi_defconfig b/arch/m68k/configs/multi_defconfig
index b1eaad02efab..45a898e9c1d1 100644
--- a/arch/m68k/configs/multi_defconfig
+++ b/arch/m68k/configs/multi_defconfig
@@ -549,7 +549,6 @@ CONFIG_OMFS_FS=m
 CONFIG_HPFS_FS=m
 CONFIG_QNX4FS_FS=m
 CONFIG_QNX6FS_FS=m
-CONFIG_SYSV_FS=m
 CONFIG_UFS_FS=m
 CONFIG_EROFS_FS=m
 CONFIG_NFS_FS=y
diff --git a/arch/m68k/configs/mvme147_defconfig b/arch/m68k/configs/mvme147_defconfig
index 6309a4442bb3..350dc6d08461 100644
--- a/arch/m68k/configs/mvme147_defconfig
+++ b/arch/m68k/configs/mvme147_defconfig
@@ -435,7 +435,6 @@ CONFIG_OMFS_FS=m
 CONFIG_HPFS_FS=m
 CONFIG_QNX4FS_FS=m
 CONFIG_QNX6FS_FS=m
-CONFIG_SYSV_FS=m
 CONFIG_UFS_FS=m
 CONFIG_EROFS_FS=m
 CONFIG_NFS_FS=y
diff --git a/arch/m68k/configs/mvme16x_defconfig b/arch/m68k/configs/mvme16x_defconfig
index 3feb0731f814..7ea283ba86b7 100644
--- a/arch/m68k/configs/mvme16x_defconfig
+++ b/arch/m68k/configs/mvme16x_defconfig
@@ -436,7 +436,6 @@ CONFIG_OMFS_FS=m
 CONFIG_HPFS_FS=m
 CONFIG_QNX4FS_FS=m
 CONFIG_QNX6FS_FS=m
-CONFIG_SYSV_FS=m
 CONFIG_UFS_FS=m
 CONFIG_EROFS_FS=m
 CONFIG_NFS_FS=y
diff --git a/arch/m68k/configs/q40_defconfig b/arch/m68k/configs/q40_defconfig
index ea04b1b0da7d..eb0de405e6a9 100644
--- a/arch/m68k/configs/q40_defconfig
+++ b/arch/m68k/configs/q40_defconfig
@@ -452,7 +452,6 @@ CONFIG_OMFS_FS=m
 CONFIG_HPFS_FS=m
 CONFIG_QNX4FS_FS=m
 CONFIG_QNX6FS_FS=m
-CONFIG_SYSV_FS=m
 CONFIG_UFS_FS=m
 CONFIG_EROFS_FS=m
 CONFIG_NFS_FS=y
diff --git a/arch/m68k/configs/sun3_defconfig b/arch/m68k/configs/sun3_defconfig
index f52d9af92153..7026a139ccf8 100644
--- a/arch/m68k/configs/sun3_defconfig
+++ b/arch/m68k/configs/sun3_defconfig
@@ -433,7 +433,6 @@ CONFIG_OMFS_FS=m
 CONFIG_HPFS_FS=m
 CONFIG_QNX4FS_FS=m
 CONFIG_QNX6FS_FS=m
-CONFIG_SYSV_FS=m
 CONFIG_UFS_FS=m
 CONFIG_EROFS_FS=m
 CONFIG_NFS_FS=y
diff --git a/arch/m68k/configs/sun3x_defconfig b/arch/m68k/configs/sun3x_defconfig
index f348447824da..c91abb80b081 100644
--- a/arch/m68k/configs/sun3x_defconfig
+++ b/arch/m68k/configs/sun3x_defconfig
@@ -433,7 +433,6 @@ CONFIG_OMFS_FS=m
 CONFIG_HPFS_FS=m
 CONFIG_QNX4FS_FS=m
 CONFIG_QNX6FS_FS=m
-CONFIG_SYSV_FS=m
 CONFIG_UFS_FS=m
 CONFIG_EROFS_FS=m
 CONFIG_NFS_FS=y