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Message-ID: <20070104111616.GA15920@amitarora.in.ibm.com>
Date: Thu, 4 Jan 2007 16:46:16 +0530
From: "Amit K. Arora" <aarora@...ux.vnet.ibm.com>
To: Alex Tomas <alex@...sterfs.com>
Cc: Mingming Cao <cmm@...ibm.com>, linux-ext4@...r.kernel.org,
suparna@...ibm.com
Subject: Re: [PATCH 1/1 version2] Extent overlap bugfix in ext4
On Thu, Jan 04, 2007 at 01:25:35PM +0300, Alex Tomas wrote:
> >>>>> Amit K Arora (AKA) writes:
>
> AKA> +int ext4_ext_check_overlap(struct inode *inode,
> AKA> + struct ext4_extent *newext,
> AKA> + unsigned long *block)
> AKA> +{
> AKA> + struct ext4_ext_path *path;
> AKA> + unsigned int depth, b1, len1;
> AKA> + int ret = 0;
> AKA> +
> AKA> + b1 = le32_to_cpu(newext->ee_block);
> AKA> + len1 = le16_to_cpu(newext->ee_len);
> AKA> + path = ext4_ext_find_extent(inode, b1, NULL);
> AKA> + if (IS_ERR(path)) {
> AKA> + ret = PTR_ERR(path);
> AKA> + goto out;
> AKA> + }
> AKA> + depth = ext_depth(inode);
> AKA> + BUG_ON(path[depth].p_ext == NULL && depth != 0);
> AKA> +
> AKA> + *block = ext4_ext_next_allocated_block(path);
> AKA> + if (*block == EXT_MAX_BLOCK)
> AKA> + goto out;
> AKA> +
> AKA> + if (b1 + len1 > *block)
> AKA> + ret = 1;
> AKA> +out:
> AKA> + return ret;
>
> <AT> ext4_ext_find_extent() allocates 'path', I'd expect
> <AT> kfree() in the function.
Ok. I will add following after "out:"
if (path) {
ext4_ext_drop_refs(path);
kfree(path);
}
And also set "path = NULL;" before calling "goto out", incase
ext4_ext_find_extent() returns an error.
--
Regards,
Amit Arora
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