Porting the YAFFS2 file system to the linux3.18.4 kernel (original)

Porting Yaffs File system: (linux-3.18.4 Kernel) 1.git clone GIT://WWW.ALEPH1.CO.UK/YAFFS2//Use this to get YAFFS2 source Package 1.1 Decompression Source Package 2. Patch CD Yaffs-dir
./patch-ker.sh C m linux-tree such as./patch-ker.sh C m/home/fedora/workspace/linux-3.18.4 3. Configuring Kernel Support Yaffs
File Systems |
| Miscellaneous filesystems (Misc_filesystems [=y]) |
| YAFFS2 File system Support (Yaffs_fs [=n]) |
| Byte/page devices (YAFFS_YAFFS1 [=n]) |
| Use Older-style on-nand data format with Pagestatus byte selected, using default values
4. Compile, use zimage make arch=arm cross_compile=arm-linux-zimage compile error:

fs/yaffs2/yaffs_vfs.c:in function ' Yaffs_file_flush ':
Fs/yaffs2/yaffs_vfs.c:741:error:too few arguments to function ' yaffs_flush_file '
fs/yaffs2/yaffs_vfs.c:in function ' Yaffs_sync_object ':
Fs/yaffs2/yaffs_vfs.c:771:error:too few arguments to function ' yaffs_flush_file '
Fs/yaffs2/yaffs_vfs.c:at Top level:
Fs/yaffs2/yaffs_vfs.c:781:error: ' Generic_file_aio_read ' undeclared here (not in a function)
Fs/yaffs2/yaffs_vfs.c:782:error: ' Generic_file_aio_write ' undeclared here (not in a function)
Fs/yaffs2/yaffs_vfs.c:787:error: ' Generic_file_splice_write ' undeclared here (not in a function)
fs/yaffs2/yaffs_vfs.c:in function ' yaffs_flush_inodes ':
Fs/yaffs2/yaffs_vfs.c:2190:error:too few arguments to function ' yaffs_flush_file '
fs/yaffs2/yaffs_vfs.c:in function ' Yaffs_flush_super ':
Fs/yaffs2/yaffs_vfs.c:2203:error:too few arguments to function ' Yaffs_flush_whole_cache '

The code is modified as follows:

Diff--git A/yaffs_vfs.c B/YAFFS_VFS.C
Index 76BC1DB: F6E4EC2 100755
---a/yaffs_vfs.c
+ + B/YAFFS_VFS.C
@@ -738,7 +738,7 @@ -738,7 int yaffs_file_flush (struct file *file)

Yaffs_gross_lock (Dev);

-yaffs_flush_file (obj, 1, 0);
+yaffs_flush_file (obj, 1, 0, 1);

Yaffs_gross_unlock (Dev);

@@ -768,7 +768,7 @@ -768,7 int yaffs_sync_object (struct file *file, struct dentry *dentry,
Yaffs_trace (Yaffs_trace_os | Yaffs_trace_sync,
"Yaffs_sync_object");
Yaffs_gross_lock (Dev);
-yaffs_flush_file (obj, 1, datasync);
+yaffs_flush_file (obj, 1, datasync, 1);
Yaffs_gross_unlock (Dev);
return 0;
}
@@ -778,13 +778,13 @@ -778,13 int yaffs_sync_object (struct file *file, struct dentry *dentry,
static const struct File_operations yaffs_file_operations = {
. Read = Do_sync_read,
. write = Do_sync_write,
-.aio_read = Generic_file_aio_read,
-.aio_write = Generic_file_aio_write,
+. Read_iter =generic_file_read_iter,
+. Write_iter =generic_file_write_iter,
. mmap = Generic_file_mmap,
. Flush = Yaffs_file_flush,
. Fsync = Yaffs_sync_object,
-.splice_read = Generic_file_splice_read,
-.splice_write = Generic_file_splice_write,
+.splice_read =generic_file_splice_read,
+.splice_write= Iter_file_splice_write,
. Llseek = Generic_file_llseek,
};

@@ -2187,7 +2187,7 @@ -2187,7 void yaffs_flush_inodes (struct super_block *sb)
Yaffs_trace (Yaffs_trace_os,
"Flushing obj%d",
OBJ->OBJ_ID);
-yaffs_flush_file (obj, 1, 0);
+yaffs_flush_file (obj, 1, 0, 1);
}
}
}
@@ -2200,7 +2200,7 @@ -2200,7 void yaffs_flush_super (struct super_block *sb, int do_checkpoint)

Yaffs_flush_inodes (SB);
Yaffs_update_dirty_dirs (Dev);
-yaffs_flush_whole_cache (Dev);
+yaffs_flush_whole_cache (Dev, 1);
if (do_checkpoint)
Yaffs_checkpoint_save (Dev);
}

Recompile:

CHK Include/config/kernel.release
CHK Include/generated/uapi/linux/version.h
CHK include/generated/utsrelease.h
MAKE[1]: "Include/generated/mach-types.h" is up to date.
Call scripts/checksyscalls.sh
CHK include/generated/compile.h
CC FS/YAFFS2/YAFFS_VFS.O
CC FS/YAFFS2/YAFFS_GUTS.O
CC FS/YAFFS2/YAFFS_CHECKPTRW.O
CC FS/YAFFS2/YAFFS_PACKEDTAGS1.O
CC FS/YAFFS2/YAFFS_PACKEDTAGS2.O
CC FS/YAFFS2/YAFFS_NAND.O
CC FS/YAFFS2/YAFFS_TAGSCOMPAT.O
CC FS/YAFFS2/YAFFS_TAGSMARSHALL.O
CC FS/YAFFS2/YAFFS_MTDIF.O
CC FS/YAFFS2/YAFFS_NAMEVAL.O
CC FS/YAFFS2/YAFFS_ATTRIBS.O
CC FS/YAFFS2/YAFFS_ALLOCATOR.O
CC FS/YAFFS2/YAFFS_YAFFS1.O
CC FS/YAFFS2/YAFFS_YAFFS2.O
CC FS/YAFFS2/YAFFS_BITMAP.O
CC FS/YAFFS2/YAFFS_SUMMARY.O
CC FS/YAFFS2/YAFFS_VERIFY.O
LD FS/YAFFS2/YAFFS.O
LD FS/YAFFS2/BUILT-IN.O
LD FS/BUILT-IN.O
LINK Vmlinux
LD VMLINUX.O
Modpost VMLINUX.O
GEN. Version
CHK include/generated/compile.h
UPD include/generated/compile.h
CC INIT/VERSION.O
LD INIT/BUILT-IN.O
Ksym. tmp_kallsyms1.o
Ksym. tmp_kallsyms2.o
LD Vmlinux
SORTEX Vmlinux
Sysmap System.map
Objcopy Arch/arm/boot/image
Kernel:arch/arm/boot/image is ready
GZIP Arch/arm/boot/compressed/piggy.gzip
As ARCH/ARM/BOOT/COMPRESSED/PIGGY.GZIP.O
LD Arch/arm/boot/compressed/vmlinux
Objcopy Arch/arm/boot/zimage
Kernel:arch/arm/boot/zimage is ready

Ok!

Porting the YAFFS2 file system to the linux3.18.4 kernel (original)