On Tuesday 26 February 2008 06:10:34 Jiri Kosina wrote:
> On Mon, 25 Feb 2008, Jan Kara wrote:
> > Yes, exactly two of them. One is non-trivial to get rid of - it's
> > used for encoding of filename before we write it,
>
> Why can't we do just
>
>
>
> UDF: Optimize stack usage
>
> Signed-off-by: Jiri Kosina <jkosina@xxxxxxx>
>
> diff --git a/fs/udf/namei.c b/fs/udf/namei.c
> index 112a5fb..706a2b5 100644
> --- a/fs/udf/namei.c
> +++ b/fs/udf/namei.c
> @@ -336,7 +336,7 @@ static struct fileIdentDesc *udf_add_entry(struct inode
> *dir, {
> struct super_block *sb = dir->i_sb;
> struct fileIdentDesc *fi = NULL;
> - char name[UDF_NAME_LEN], fname[UDF_NAME_LEN];
> + char *name, *fname;
> int namelen;
> loff_t f_pos;
> int flen;
> @@ -352,6 +352,14 @@ static struct fileIdentDesc *udf_add_entry(struct
> inode *dir, struct extent_position epos = {};
> struct udf_inode_info *dinfo;
>
> + name = kmalloc(sizeof(char) * UDF_NAME_LEN, GFP_KERNEL);
> + fname = kmalloc(sizeof(char) * UDF_NAME_LEN, GFP_KERNEL);
> +
> + if (!name || !fname) {
> + *err = -ENOMEM;
> + return NULL;
> + }
> +
Wouldn't it be better to check each individually, so you do wind up leaking a
buffer here if one gets allocated and the other doesn't ?
> if (dentry) {
> if (!dentry->d_name.len) {
> *err = -EINVAL;
> diff --git a/fs/udf/super.c b/fs/udf/super.c
> index f3ac4ab..42e3ba8 100644
> --- a/fs/udf/super.c
> +++ b/fs/udf/super.c
> @@ -1345,7 +1345,7 @@ static void udf_load_logicalvolint(struct super_block
> *sb, kernel_extent_ad loc) * July 1, 1997 - Andrew E. Mileski
> * Written, tested, and released.
> */
> -static int udf_process_sequence(struct super_block *sb, long block,
> +static int noinline udf_process_sequence(struct super_block *sb, long
> block, long lastblock, kernel_lb_addr *fileset)
> {
> struct buffer_head *bh = NULL;
> --
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DRH
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