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Date: Tue, 23 Jan 2007 18:24:16 +0100
From: Cordenner jean noel <jean-noel.cordenner@...l.net>
To: linux-ext4@...r.kernel.org
Cc: nfsv4@...ux-nfs.org
Subject: [RFC] [patch 2/3] i_version update for ext4: ext4 specific code
This part of the patch contains the definition of the on-disk i_version
field and its update
Signed-off-by: Jean Noel Cordenner <jean-noel.cordenner@...l.net>
Index: linux-2.6.20-rc5/fs/ext4/ialloc.c
===================================================================
--- linux-2.6.20-rc5.orig/fs/ext4/ialloc.c 2006-11-29
22:57:37.000000000 +0100
+++ linux-2.6.20-rc5/fs/ext4/ialloc.c 2007-01-23 13:48:20.000000000 +0100
@@ -564,6 +564,7 @@
/* This is the optimal IO size (for stat), not the fs block size */
inode->i_blocks = 0;
inode->i_mtime = inode->i_atime = inode->i_ctime =
CURRENT_TIME_SEC;
+ inode->i_version = 1;
memset(ei->i_data, 0, sizeof(ei->i_data));
ei->i_dir_start_lookup = 0;
Index: linux-2.6.20-rc5/fs/ext4/inode.c
===================================================================
--- linux-2.6.20-rc5.orig/fs/ext4/inode.c 2007-01-19
16:59:14.000000000 +0100
+++ linux-2.6.20-rc5/fs/ext4/inode.c 2007-01-23 13:45:02.000000000 +0100
@@ -728,6 +728,7 @@
/* We are done with atomic stuff, now do the rest of
housekeeping */
inode->i_ctime = CURRENT_TIME_SEC;
+ inode->i_version++;
ext4_mark_inode_dirty(handle, inode);
/* had we spliced it onto indirect block? */
@@ -2442,6 +2443,7 @@
mutex_unlock(&ei->truncate_mutex);
inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
+ inode->i_version++;
ext4_mark_inode_dirty(handle, inode);
/*
@@ -2680,6 +2682,7 @@
inode->i_ctime.tv_sec = le32_to_cpu(raw_inode->i_ctime);
inode->i_mtime.tv_sec = le32_to_cpu(raw_inode->i_mtime);
inode->i_atime.tv_nsec = inode->i_ctime.tv_nsec =
inode->i_mtime.tv_nsec = 0;
+ inode->i_version = le32_to_cpu(raw_inode->ext4_i_version);
ei->i_state = 0;
ei->i_dir_start_lookup = 0;
@@ -2838,6 +2841,7 @@
raw_inode->i_atime = cpu_to_le32(inode->i_atime.tv_sec);
raw_inode->i_ctime = cpu_to_le32(inode->i_ctime.tv_sec);
raw_inode->i_mtime = cpu_to_le32(inode->i_mtime.tv_sec);
+ raw_inode->ext4_i_version = cpu_to_le32(inode->i_version);
raw_inode->i_blocks = cpu_to_le32(inode->i_blocks);
raw_inode->i_dtime = cpu_to_le32(ei->i_dtime);
raw_inode->i_flags = cpu_to_le32(ei->i_flags);
Index: linux-2.6.20-rc5/include/linux/ext4_fs.h
===================================================================
--- linux-2.6.20-rc5.orig/include/linux/ext4_fs.h 2006-11-29
22:57:37.000000000 +0100
+++ linux-2.6.20-rc5/include/linux/ext4_fs.h 2007-01-23
13:47:32.000000000 +0100
@@ -291,7 +291,7 @@
__le32 i_flags; /* File flags */
union {
struct {
- __u32 l_i_reserved1;
+ __u32 l_i_version;
} linux1;
struct {
__u32 h_i_translator;
@@ -336,7 +336,7 @@
#define i_size_high i_dir_acl
#if defined(__KERNEL__) || defined(__linux__)
-#define i_reserved1 osd1.linux1.l_i_reserved1
+#define ext4_i_version osd1.linux1.l_i_version
#define i_frag osd2.linux2.l_i_frag
#define i_fsize osd2.linux2.l_i_fsize
#define i_file_acl_high osd2.linux2.l_i_file_acl_high
Index: linux-2.6.20-rc5/fs/ext4/ioctl.c
===================================================================
--- linux-2.6.20-rc5.orig/fs/ext4/ioctl.c 2007-01-19
16:59:14.000000000 +0100
+++ linux-2.6.20-rc5/fs/ext4/ioctl.c 2007-01-23 13:49:58.000000000 +0100
@@ -97,6 +97,7 @@
ext4_set_inode_flags(inode);
inode->i_ctime = CURRENT_TIME_SEC;
+ inode->i_version++;
err = ext4_mark_iloc_dirty(handle, inode, &iloc);
flags_err:
@@ -134,6 +135,7 @@
err = ext4_reserve_inode_write(handle, inode, &iloc);
if (err == 0) {
inode->i_ctime = CURRENT_TIME_SEC;
+ inode->i_version++;
inode->i_generation = generation;
err = ext4_mark_iloc_dirty(handle, inode, &iloc);
}
Index: linux-2.6.20-rc5/fs/ext4/namei.c
===================================================================
--- linux-2.6.20-rc5.orig/fs/ext4/namei.c 2007-01-19
16:59:14.000000000 +0100
+++ linux-2.6.20-rc5/fs/ext4/namei.c 2007-01-23 15:10:19.000000000 +0100
@@ -2059,6 +2059,7 @@
inode->i_size = 0;
ext4_orphan_add(handle, inode);
inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME_SEC;
+ inode->i_version++;
ext4_mark_inode_dirty(handle, inode);
drop_nlink(dir);
ext4_update_dx_flag(dir);
@@ -2109,12 +2110,14 @@
if (retval)
goto end_unlink;
dir->i_ctime = dir->i_mtime = CURRENT_TIME_SEC;
+ dir->i_version++;
ext4_update_dx_flag(dir);
ext4_mark_inode_dirty(handle, dir);
drop_nlink(inode);
if (!inode->i_nlink)
ext4_orphan_add(handle, inode);
inode->i_ctime = dir->i_ctime;
+ inode->i_version++;
ext4_mark_inode_dirty(handle, inode);
retval = 0;
@@ -2200,6 +2203,7 @@
handle->h_sync = 1;
inode->i_ctime = CURRENT_TIME_SEC;
+ inode->i_version++;
ext4_inc_count(handle, inode);
atomic_inc(&inode->i_count);
@@ -2302,6 +2306,7 @@
* rename.
*/
old_inode->i_ctime = CURRENT_TIME_SEC;
+ old_inode->i_version++;
ext4_mark_inode_dirty(handle, old_inode);
/*
@@ -2335,8 +2340,10 @@
if (new_inode) {
drop_nlink(new_inode);
new_inode->i_ctime = CURRENT_TIME_SEC;
+ new_inode->i_version++;
}
old_dir->i_ctime = old_dir->i_mtime = CURRENT_TIME_SEC;
+ old_dir->i_version++;
ext4_update_dx_flag(old_dir);
if (dir_bh) {
BUFFER_TRACE(dir_bh, "get_write_access");
Index: linux-2.6.20-rc5/fs/ext4/super.c
===================================================================
--- linux-2.6.20-rc5.orig/fs/ext4/super.c 2007-01-19
16:59:14.000000000 +0100
+++ linux-2.6.20-rc5/fs/ext4/super.c 2007-01-23 15:35:11.000000000 +0100
@@ -2784,8 +2784,8 @@
i_size_write(inode, off+len-towrite);
EXT4_I(inode)->i_disksize = inode->i_size;
}
- inode->i_version++;
inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+ inode->i_version = 1;
ext4_mark_inode_dirty(handle, inode);
mutex_unlock(&inode->i_mutex);
return len - towrite;
Index: linux-2.6.20-rc5/fs/ext4/xattr.c
===================================================================
--- linux-2.6.20-rc5.orig/fs/ext4/xattr.c 2007-01-19
16:59:14.000000000 +0100
+++ linux-2.6.20-rc5/fs/ext4/xattr.c 2007-01-23 15:36:20.000000000 +0100
@@ -1005,6 +1005,7 @@
if (!error) {
ext4_xattr_update_super_block(handle, inode->i_sb);
inode->i_ctime = CURRENT_TIME_SEC;
+ inode->i_version++;
error = ext4_mark_iloc_dirty(handle, inode, &is.iloc);
/*
* The bh is consumed by ext4_mark_iloc_dirty, even with
-
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