read_cache_page & permission denied.

[Swapnil Nagle <swaps@protonic.com>]

Hi all,

To prefetch a page into the page cache, we do something 
like:

    struct inode* inode = iget(sb,inode_nr);

    struct page* page = read_cache_page(..);
          .
          . <== various error checking same as ext2_get_page
          .
    iput(inode);

The code "works" (there's no oops or anything). 
Now if we try compiling the kernel with prefetching on, it
gives:

stat: Makefile : permission denied

This does not happen without prefetching. It seems that some
inode or page is locked, so it cannot be accessed. Does the
page has to be unlocked or something after reading it ?

Thanks in advance.
Swapnil.



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