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Date: Mon, 14 May 2007 13:04:58 +0200
From: Cordenner jean noel <jean-noel.cordenner@...l.net>
To: linux-ext4@...r.kernel.org
Subject: [RFC] [patch 1/2] i_version update - vfs part
Concerning the first part of the set, the i_version field of the inode
structure has been reused. The field has been redefined from unsigned
long to unsigned long long as the counter has to be 64bit.
Signed-off-by: Jean Noel Cordenner <jean-noel.cordenner@...l.net>
fs/binfmt_misc.c | 1 +
fs/libfs.c | 9 +++++++++
fs/pipe.c | 1 +
include/linux/fs.h | 2 +-
Index: linux-2.6.21-rc4-i_version/fs/binfmt_misc.c
===================================================================
--- linux-2.6.21-rc4-i_version.orig/fs/binfmt_misc.c 2007-05-10 14:14:48.000000000 +0200
+++ linux-2.6.21-rc4-i_version/fs/binfmt_misc.c 2007-05-10 14:18:45.000000000 +0200
@@ -508,6 +508,7 @@
inode->i_blocks = 0;
inode->i_atime = inode->i_mtime = inode->i_ctime =
current_fs_time(inode->i_sb);
+ inode->i_version = 1;
}
return inode;
}
Index: linux-2.6.21-rc4-i_version/fs/libfs.c
===================================================================
--- linux-2.6.21-rc4-i_version.orig/fs/libfs.c 2007-05-10 14:14:48.000000000 +0200
+++ linux-2.6.21-rc4-i_version/fs/libfs.c 2007-05-10 17:26:13.000000000 +0200
@@ -223,6 +223,7 @@
root->i_mode = S_IFDIR | S_IRUSR | S_IWUSR;
root->i_uid = root->i_gid = 0;
root->i_atime = root->i_mtime = root->i_ctime = CURRENT_TIME;
+ root->i_version = 1;
dentry = d_alloc(NULL, &d_name);
if (!dentry) {
iput(root);
@@ -246,6 +247,8 @@
struct inode *inode = old_dentry->d_inode;
inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME;
+ inode->i_version++;
+ dir->i_version++;
inc_nlink(inode);
atomic_inc(&inode->i_count);
dget(dentry);
@@ -278,6 +281,8 @@
struct inode *inode = dentry->d_inode;
inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME;
+ inode->i_version++;
+ dir->i_version++;
drop_nlink(inode);
dput(dentry);
return 0;
@@ -314,6 +319,8 @@
old_dir->i_ctime = old_dir->i_mtime = new_dir->i_ctime =
new_dir->i_mtime = inode->i_ctime = CURRENT_TIME;
+ old_dir->i_version++;
+ new_dir->i_version++;
return 0;
}
@@ -380,6 +387,7 @@
inode->i_uid = inode->i_gid = 0;
inode->i_blocks = 0;
inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+ inode->i_version = 1;
inode->i_op = &simple_dir_inode_operations;
inode->i_fop = &simple_dir_operations;
inode->i_nlink = 2;
@@ -401,6 +409,7 @@
inode->i_uid = inode->i_gid = 0;
inode->i_blocks = 0;
inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+ inode->i_version = 1;
inode->i_fop = files->ops;
inode->i_ino = i;
d_add(dentry, inode);
Index: linux-2.6.21-rc4-i_version/fs/pipe.c
===================================================================
--- linux-2.6.21-rc4-i_version.orig/fs/pipe.c 2007-05-10 14:14:48.000000000 +0200
+++ linux-2.6.21-rc4-i_version/fs/pipe.c 2007-05-10 14:18:45.000000000 +0200
@@ -872,6 +872,7 @@
inode->i_uid = current->fsuid;
inode->i_gid = current->fsgid;
inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+ inode->i_version = 1;
return inode;
Index: linux-2.6.21-rc4-i_version/include/linux/fs.h
===================================================================
--- linux-2.6.21-rc4-i_version.orig/include/linux/fs.h 2007-04-26 16:23:59.000000000 +0200
+++ linux-2.6.21-rc4-i_version/include/linux/fs.h 2007-05-10 17:23:38.000000000 +0200
@@ -536,7 +536,7 @@
uid_t i_uid;
gid_t i_gid;
dev_t i_rdev;
- unsigned long i_version;
+ unsigned long long i_version;
loff_t i_size;
#ifdef __NEED_I_SIZE_ORDERED
seqcount_t i_size_seqcount;
-
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