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vfat_revalidate{,_ci}(): use stable parent inode passed by caller

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Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2025-01-03 01:16:14 -05:00
parent 14d02c3dcf
commit 464361133e
1 changed files with 4 additions and 9 deletions
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13
fs/fat/namei_vfat.c
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@ -43,14 +43,9 @@ static inline void vfat_d_version_set(struct dentry *dentry,
* If it happened, the negative dentry isn't actually negative
* anymore. So, drop it.
*/
static int vfat_revalidate_shortname(struct dentry *dentry)
static bool vfat_revalidate_shortname(struct dentry *dentry, struct inode *dir)
{
int ret = 1;
spin_lock(&dentry->d_lock);
if (!inode_eq_iversion(d_inode(dentry->d_parent), vfat_d_version(dentry)))
ret = 0;
spin_unlock(&dentry->d_lock);
return ret;
return inode_eq_iversion(dir, vfat_d_version(dentry));
}
static int vfat_revalidate(struct inode *dir, const struct qstr *name,
@ -62,7 +57,7 @@ static int vfat_revalidate(struct inode *dir, const struct qstr *name,
/* This is not negative dentry. Always valid. */
if (d_really_is_positive(dentry))
return 1;
return vfat_revalidate_shortname(dentry);
return vfat_revalidate_shortname(dentry, dir);
}
static int vfat_revalidate_ci(struct inode *dir, const struct qstr *name,
@ -99,7 +94,7 @@ static int vfat_revalidate_ci(struct inode *dir, const struct qstr *name,
if (flags & (LOOKUP_CREATE | LOOKUP_RENAME_TARGET))
return 0;
return vfat_revalidate_shortname(dentry);
return vfat_revalidate_shortname(dentry, dir);
}
/* returns the length of a struct qstr, ignoring trailing dots */