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NFS: Protect inode->i_nlink updates using inode->i_lock

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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2008-06-11 15:44:04 -04:00
parent d67d1c7bf9
commit 1b83d70703
1 changed files with 10 additions and 2 deletions
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12
fs/nfs/dir.c
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@ -870,6 +870,14 @@ static int nfs_dentry_delete(struct dentry *dentry)
}
static void nfs_drop_nlink(struct inode *inode)
{
spin_lock(&inode->i_lock);
if (inode->i_nlink > 0)
drop_nlink(inode);
spin_unlock(&inode->i_lock);
}
/*
* Called when the dentry loses inode.
* We use it to clean up silly-renamed files.
@ -1420,7 +1428,7 @@ static int nfs_safe_remove(struct dentry *dentry)
error = NFS_PROTO(dir)->remove(dir, &dentry->d_name);
/* The VFS may want to delete this inode */
if (error == 0)
drop_nlink(inode);
nfs_drop_nlink(inode);
nfs_mark_for_revalidate(inode);
} else
error = NFS_PROTO(dir)->remove(dir, &dentry->d_name);
@ -1647,7 +1655,7 @@ static int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
/* dentry still busy? */
goto out;
} else
drop_nlink(new_inode);
nfs_drop_nlink(new_inode);
go_ahead:
/*