The patch titled
Subject: vfs,ext2: remove CONFIG_EXT2_FS_XIP and rename CONFIG_FS_XIP to CONFIG_FS_DAX
has been added to the -mm tree. Its filename is
vfsext2-remove-config_ext2_fs_xip-and-rename-config_fs_xip-to-config_fs_dax.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/vfsext2-remove-config_ext2_fs_xip-and-rename-config_fs_xip-to-config_fs_dax.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/vfsext2-remove-config_ext2_fs_xip-and-rename-config_fs_xip-to-config_fs_dax.patch
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------------------------------------------------------
From: Matthew Wilcox <matthew.r.wilcox@xxxxxxxxx>
Subject: vfs,ext2: remove CONFIG_EXT2_FS_XIP and rename CONFIG_FS_XIP to CONFIG_FS_DAX
The fewer Kconfig options we have the better. Use the generic
CONFIG_FS_DAX to enable XIP support in ext2 as well as in the core.
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@xxxxxxxxx>
Cc: Andreas Dilger <andreas.dilger@xxxxxxxxx>
Cc: Boaz Harrosh <boaz@xxxxxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>
Cc: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>
Cc: Theodore Ts'o <tytso@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/Kconfig | 21 ++++++++++++++-------
fs/Makefile | 2 +-
fs/ext2/Kconfig | 11 -----------
fs/ext2/ext2.h | 2 +-
fs/ext2/file.c | 4 ++--
fs/ext2/super.c | 4 ++--
include/linux/fs.h | 2 +-
scripts/diffconfig | 1 -
8 files changed, 21 insertions(+), 26 deletions(-)
diff -puN fs/Kconfig~vfsext2-remove-config_ext2_fs_xip-and-rename-config_fs_xip-to-config_fs_dax fs/Kconfig
--- a/fs/Kconfig~vfsext2-remove-config_ext2_fs_xip-and-rename-config_fs_xip-to-config_fs_dax
+++ a/fs/Kconfig
@@ -13,13 +13,6 @@ if BLOCK
source "fs/ext2/Kconfig"
source "fs/ext3/Kconfig"
source "fs/ext4/Kconfig"
-
-config FS_XIP
-# execute in place
- bool
- depends on EXT2_FS_XIP
- default y
-
source "fs/jbd/Kconfig"
source "fs/jbd2/Kconfig"
@@ -40,6 +33,20 @@ source "fs/ocfs2/Kconfig"
source "fs/btrfs/Kconfig"
source "fs/nilfs2/Kconfig"
+config FS_DAX
+ bool "Direct Access (DAX) support"
+ depends on MMU
+ help
+ Direct Access (DAX) can be used on memory-backed block devices.
+ If the block device supports DAX and the filesystem supports DAX,
+ then you can avoid using the pagecache to buffer I/Os. Turning
+ on this option will compile in support for DAX; you will need to
+ mount the filesystem using the -o dax option.
+
+ If you do not have a block device that is capable of using this,
+ or if unsure, say N. Saying Y will increase the size of the kernel
+ by about 5kB.
+
endif # BLOCK
# Posix ACL utility routines
diff -puN fs/Makefile~vfsext2-remove-config_ext2_fs_xip-and-rename-config_fs_xip-to-config_fs_dax fs/Makefile
--- a/fs/Makefile~vfsext2-remove-config_ext2_fs_xip-and-rename-config_fs_xip-to-config_fs_dax
+++ a/fs/Makefile
@@ -28,7 +28,7 @@ obj-$(CONFIG_SIGNALFD) += signalfd.o
obj-$(CONFIG_TIMERFD) += timerfd.o
obj-$(CONFIG_EVENTFD) += eventfd.o
obj-$(CONFIG_AIO) += aio.o
-obj-$(CONFIG_FS_XIP) += dax.o
+obj-$(CONFIG_FS_DAX) += dax.o
obj-$(CONFIG_FILE_LOCKING) += locks.o
obj-$(CONFIG_COMPAT) += compat.o compat_ioctl.o
obj-$(CONFIG_BINFMT_AOUT) += binfmt_aout.o
diff -puN fs/ext2/Kconfig~vfsext2-remove-config_ext2_fs_xip-and-rename-config_fs_xip-to-config_fs_dax fs/ext2/Kconfig
--- a/fs/ext2/Kconfig~vfsext2-remove-config_ext2_fs_xip-and-rename-config_fs_xip-to-config_fs_dax
+++ a/fs/ext2/Kconfig
@@ -42,14 +42,3 @@ config EXT2_FS_SECURITY
If you are not using a security module that requires using
extended attributes for file security labels, say N.
-
-config EXT2_FS_XIP
- bool "Ext2 execute in place support"
- depends on EXT2_FS && MMU
- help
- Execute in place can be used on memory-backed block devices. If you
- enable this option, you can select to mount block devices which are
- capable of this feature without using the page cache.
-
- If you do not use a block device that is capable of using this,
- or if unsure, say N.
diff -puN fs/ext2/ext2.h~vfsext2-remove-config_ext2_fs_xip-and-rename-config_fs_xip-to-config_fs_dax fs/ext2/ext2.h
--- a/fs/ext2/ext2.h~vfsext2-remove-config_ext2_fs_xip-and-rename-config_fs_xip-to-config_fs_dax
+++ a/fs/ext2/ext2.h
@@ -380,7 +380,7 @@ struct ext2_inode {
#define EXT2_MOUNT_NO_UID32 0x000200 /* Disable 32-bit UIDs */
#define EXT2_MOUNT_XATTR_USER 0x004000 /* Extended user attributes */
#define EXT2_MOUNT_POSIX_ACL 0x008000 /* POSIX Access Control Lists */
-#ifdef CONFIG_FS_XIP
+#ifdef CONFIG_FS_DAX
#define EXT2_MOUNT_XIP 0x010000 /* Execute in place */
#else
#define EXT2_MOUNT_XIP 0
diff -puN fs/ext2/file.c~vfsext2-remove-config_ext2_fs_xip-and-rename-config_fs_xip-to-config_fs_dax fs/ext2/file.c
--- a/fs/ext2/file.c~vfsext2-remove-config_ext2_fs_xip-and-rename-config_fs_xip-to-config_fs_dax
+++ a/fs/ext2/file.c
@@ -25,7 +25,7 @@
#include "xattr.h"
#include "acl.h"
-#ifdef CONFIG_EXT2_FS_XIP
+#ifdef CONFIG_FS_DAX
static int ext2_dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
{
return dax_fault(vma, vmf, ext2_get_block);
@@ -109,7 +109,7 @@ const struct file_operations ext2_file_o
.splice_write = iter_file_splice_write,
};
-#ifdef CONFIG_EXT2_FS_XIP
+#ifdef CONFIG_FS_DAX
const struct file_operations ext2_xip_file_operations = {
.llseek = generic_file_llseek,
.read = new_sync_read,
diff -puN fs/ext2/super.c~vfsext2-remove-config_ext2_fs_xip-and-rename-config_fs_xip-to-config_fs_dax fs/ext2/super.c
--- a/fs/ext2/super.c~vfsext2-remove-config_ext2_fs_xip-and-rename-config_fs_xip-to-config_fs_dax
+++ a/fs/ext2/super.c
@@ -291,7 +291,7 @@ static int ext2_show_options(struct seq_
seq_puts(seq, ",grpquota");
#endif
-#if defined(CONFIG_EXT2_FS_XIP)
+#ifdef CONFIG_FS_DAX
if (sbi->s_mount_opt & EXT2_MOUNT_XIP)
seq_puts(seq, ",xip");
#endif
@@ -558,7 +558,7 @@ static int parse_options(char *options,
break;
#endif
case Opt_xip:
-#ifdef CONFIG_EXT2_FS_XIP
+#ifdef CONFIG_FS_DAX
set_opt (sbi->s_mount_opt, XIP);
#else
ext2_msg(sb, KERN_INFO, "xip option not supported");
diff -puN include/linux/fs.h~vfsext2-remove-config_ext2_fs_xip-and-rename-config_fs_xip-to-config_fs_dax include/linux/fs.h
--- a/include/linux/fs.h~vfsext2-remove-config_ext2_fs_xip-and-rename-config_fs_xip-to-config_fs_dax
+++ a/include/linux/fs.h
@@ -1637,7 +1637,7 @@ struct super_operations {
#define S_IMA 1024 /* Inode has an associated IMA struct */
#define S_AUTOMOUNT 2048 /* Automount/referral quasi-directory */
#define S_NOSEC 4096 /* no suid or xattr security attributes */
-#ifdef CONFIG_FS_XIP
+#ifdef CONFIG_FS_DAX
#define S_DAX 8192 /* Direct Access, avoiding the page cache */
#else
#define S_DAX 0 /* Make all the DAX code disappear */
diff -puN scripts/diffconfig~vfsext2-remove-config_ext2_fs_xip-and-rename-config_fs_xip-to-config_fs_dax scripts/diffconfig
--- a/scripts/diffconfig~vfsext2-remove-config_ext2_fs_xip-and-rename-config_fs_xip-to-config_fs_dax
+++ a/scripts/diffconfig
@@ -28,7 +28,6 @@ If no config files are specified, .confi
Example usage:
$ diffconfig .config config-with-some-changes
-EXT2_FS_XATTR n
--EXT2_FS_XIP n
CRAMFS n -> y
EXT2_FS y -> n
LOG_BUF_SHIFT 14 -> 16
_
Patches currently in -mm which might be from matthew.r.wilcox@xxxxxxxxx are
axonram-fix-bug-in-direct_access.patch
block-change-direct_access-calling-convention.patch
mm-fix-xip-fault-vs-truncate-race.patch
mm-fix-xip-fault-vs-truncate-race-fix.patch
mm-allow-page-fault-handlers-to-perform-the-cow.patch
mm-allow-page-fault-handlers-to-perform-the-cow-fix.patch
vfsext2-introduce-is_daxinode.patch
daxext2-replace-xip-read-and-write-with-dax-i-o.patch
daxext2-replace-ext2_clear_xip_target-with-dax_clear_blocks.patch
daxext2-replace-the-xip-page-fault-handler-with-the-dax-page-fault-handler.patch
daxext2-replace-the-xip-page-fault-handler-with-the-dax-page-fault-handler-fix.patch
daxext2-replace-xip_truncate_page-with-dax_truncate_page.patch
vfs-remove-get_xip_mem.patch
ext2-remove-ext2_xip_verify_sb.patch
ext2-remove-ext2_use_xip.patch
ext2-remove-xipc-and-xiph.patch
vfsext2-remove-config_ext2_fs_xip-and-rename-config_fs_xip-to-config_fs_dax.patch
ext2-remove-ext2_aops_xip.patch
ext2-get-rid-of-most-mentions-of-xip-in-ext2.patch
dax-add-dax_zero_page_range.patch
dax-add-dax_zero_page_range-fix.patch
ext4-add-dax-functionality.patch
brd-rename-xip-to-dax.patch
do_shared_fault-check-that-mmap_sem-is-held.patch
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