pktcdvd stack usage regression

[Adrian Bunk <bunk@stusta.de>]

Hi Phillip,

your recent patch "pktcdvd: Allow larger packets" changed 
PACKET_MAX_SIZE in the pktcdvd driver from 32 to 128.

Unfortunately, drivers/block/pktcdvd.c contains the following:

<--  snip  -->

...
static void pkt_start_write(struct pktcdvd_device *pd, struct 
packet_data *pkt)
{
        struct bio *bio;
        struct page *pages[PACKET_MAX_SIZE];
        int offsets[PACKET_MAX_SIZE];
...

<--  snip  -->

With PACKET_MAX_SIZE=128, this allocates more than 1 kB on the stack 
which is not acceptable considering that we might have only 4 kB stack 
altogether.

Please either fix this before 2.6.16 or ask Linus to revert commit 
5c55ac9bbca22ee134408f83de5f2bda3b1b2a53.

TIA
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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