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Fix f_version type: should be u64 instead of unsigned long

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Fix f_version type: should be u64 instead of long

There is a type inconsistency between struct inode i_version and struct file
f_version.

fs.h:

struct inode
  u64                     i_version;

and

struct file
  unsigned long           f_version;

Users do:

fs/ext3/dir.c:

if (filp->f_version != inode->i_version) {

So why isn't f_version a u64 ? It becomes a problem if versions gets
higher than 2^32 and we are on an architecture where longs are 32 bits.

This patch changes the f_version type to u64, and updates the users accordingly.

It applies to 2.6.23-rc2-mm2.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Martin Bligh <mbligh@google.com>
Cc: "Randy.Dunlap" <rdunlap@xenotime.net>
Cc: Al Viro <viro@ftp.linux.org.uk>
Cc: <linux-ext4@vger.kernel.org>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mathieu Desnoyers 2007-10-16 23:27:21 -07:00 committed by Linus Torvalds
parent 41d10da371
commit 2b47c3611d
6 changed files with 11 additions and 11 deletions
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2
fs/ext3/dir.c
View File

@ -210,7 +210,7 @@ static int ext3_readdir(struct file * filp,
* not the directory has been modified
* during the copy operation.
*/
unsigned long version = filp->f_version;
u64 version = filp->f_version;
error = filldir(dirent, de->name,
de->name_len,

2
fs/ext4/dir.c
View File

@ -210,7 +210,7 @@ static int ext4_readdir(struct file * filp,
* not the directory has been modified
* during the copy operation.
*/
unsigned long version = filp->f_version;
u64 version = filp->f_version;
error = filldir(dirent, de->name,
de->name_len,

10
fs/ocfs2/dir.c
View File

@ -586,7 +586,7 @@ int __ocfs2_add_entry(handle_t *handle,
}
static int ocfs2_dir_foreach_blk_id(struct inode *inode,
unsigned long *f_version,
u64 *f_version,
loff_t *f_pos, void *priv,
filldir_t filldir, int *filldir_err)
{
@ -648,7 +648,7 @@ static int ocfs2_dir_foreach_blk_id(struct inode *inode,
* not the directory has been modified
* during the copy operation.
*/
unsigned long version = *f_version;
u64 version = *f_version;
unsigned char d_type = DT_UNKNOWN;
if (de->file_type < OCFS2_FT_MAX)
@ -677,7 +677,7 @@ static int ocfs2_dir_foreach_blk_id(struct inode *inode,
}
static int ocfs2_dir_foreach_blk_el(struct inode *inode,
unsigned long *f_version,
u64 *f_version,
loff_t *f_pos, void *priv,
filldir_t filldir, int *filldir_err)
{
@ -798,7 +798,7 @@ static int ocfs2_dir_foreach_blk_el(struct inode *inode,
return stored;
}
static int ocfs2_dir_foreach_blk(struct inode *inode, unsigned long *f_version,
static int ocfs2_dir_foreach_blk(struct inode *inode, u64 *f_version,
loff_t *f_pos, void *priv, filldir_t filldir,
int *filldir_err)
{
@ -818,7 +818,7 @@ int ocfs2_dir_foreach(struct inode *inode, loff_t *f_pos, void *priv,
filldir_t filldir)
{
int ret = 0, filldir_err = 0;
unsigned long version = inode->i_version;
u64 version = inode->i_version;
while (*f_pos < i_size_read(inode)) {
ret = ocfs2_dir_foreach_blk(inode, &version, f_pos, priv,

4
fs/proc/base.c
View File

@ -2586,7 +2586,7 @@ static int proc_task_readdir(struct file * filp, void * dirent, filldir_t filldi
/* f_version caches the tgid value that the last readdir call couldn't
* return. lseek aka telldir automagically resets f_version to 0.
*/
tid = filp->f_version;
tid = (int)filp->f_version;
filp->f_version = 0;
for (task = first_tid(leader, tid, pos - 2);
task;
@ -2595,7 +2595,7 @@ static int proc_task_readdir(struct file * filp, void * dirent, filldir_t filldi
if (proc_task_fill_cache(filp, dirent, filldir, task, tid) < 0) {
/* returning this tgid failed, save it as the first
* pid for the next readir call */
filp->f_version = tid;
filp->f_version = (u64)tid;
put_task_struct(task);
break;
}

2
include/linux/fs.h
View File

@ -792,7 +792,7 @@ struct file {
unsigned int f_uid, f_gid;
struct file_ra_state f_ra;
unsigned long f_version;
u64 f_version;
#ifdef CONFIG_SECURITY
void *f_security;
#endif

2
include/linux/seq_file.h
View File

@ -18,7 +18,7 @@ struct seq_file {
size_t from;
size_t count;
loff_t index;
loff_t version;
u64 version;
struct mutex lock;
const struct seq_operations *op;
void *private;