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vfat: don't use ->d_time

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Use d_fsdata instead, which is the same size.  Introduce helpers to hide
the typecasts.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
This commit is contained in:
Miklos Szeredi 2016-09-16 12:44:21 +02:00
parent a00be0e31f
commit 814184fd40
1 changed files with 15 additions and 4 deletions
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19
fs/fat/namei_vfat.c
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@ -21,6 +21,17 @@
#include <linux/namei.h>
#include "fat.h"
static inline unsigned long vfat_d_version(struct dentry *dentry)
{
return (unsigned long) dentry->d_fsdata;
}
static inline void vfat_d_version_set(struct dentry *dentry,
unsigned long version)
{
dentry->d_fsdata = (void *) version;
}
/*
* If new entry was created in the parent, it could create the 8.3
* alias (the shortname of logname). So, the parent may have the
@ -33,7 +44,7 @@ static int vfat_revalidate_shortname(struct dentry *dentry)
{
int ret = 1;
spin_lock(&dentry->d_lock);
if (dentry->d_time != d_inode(dentry->d_parent)->i_version)
if (vfat_d_version(dentry) != d_inode(dentry->d_parent)->i_version)
ret = 0;
spin_unlock(&dentry->d_lock);
return ret;
@ -759,7 +770,7 @@ static struct dentry *vfat_lookup(struct inode *dir, struct dentry *dentry,
out:
mutex_unlock(&MSDOS_SB(sb)->s_lock);
if (!inode)
dentry->d_time = dir->i_version;
vfat_d_version_set(dentry, dir->i_version);
return d_splice_alias(inode, dentry);
error:
mutex_unlock(&MSDOS_SB(sb)->s_lock);
@ -823,7 +834,7 @@ static int vfat_rmdir(struct inode *dir, struct dentry *dentry)
clear_nlink(inode);
inode->i_mtime = inode->i_atime = CURRENT_TIME_SEC;
fat_detach(inode);
dentry->d_time = dir->i_version;
vfat_d_version_set(dentry, dir->i_version);
out:
mutex_unlock(&MSDOS_SB(sb)->s_lock);
@ -849,7 +860,7 @@ static int vfat_unlink(struct inode *dir, struct dentry *dentry)
clear_nlink(inode);
inode->i_mtime = inode->i_atime = CURRENT_TIME_SEC;
fat_detach(inode);
dentry->d_time = dir->i_version;
vfat_d_version_set(dentry, dir->i_version);
out:
mutex_unlock(&MSDOS_SB(sb)->s_lock);