On 6/22/05, MHD.Tayseer <gilmour@xxxxxxxxxxx> wrote:
> Hi everyone:
> in the 2.6 kernel:
> 1- what is the maximum size i can kmalloc it in kernel ?
I had read in a document that said, if u use GFP_KERNEL u
can use 128kb. if u use GFP_DMA, then the maxm size can be of the
page size.
> 2- what is the maximum size that netlink socket is capable of sending in
> one shot ?
I dont know about the netlink socket, can anyone throw more light
on this please.
> i've googled but the results was an out of date articles (latest was
> 2002) so i'm not sure that the limitation they were mentioning is still
> exists (the articles where saying about 2Mb of maximum malloc size in
> kernel 2.2 2.3)
>
> if you wanna know why should i need large kmalloc and large netlink msg
> size cause I'm implementing the vfs call :
> ssize_t my_fs_write(int gfd, const char __user * data, size_t count,
> loff_t * offset)
> and the actual file system implementation is in user level (user-level
> file server)
> so i have to copy the data from user to kernel and then send it via
> netlink socket to the userlevel file system server
> Thanks in advance
> MHD
>
>
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