Uclinux-2008r1-rc8 (bf561) to VDSP5 transplantation (in): __grab_cache_page

There is a __grab_cache_page function in mm/filemap.c that also causes the VDSP compiler error:

../../mm/filemap.c
At end of source: : internal error: Uncaught exception Assertion failed raised
at ../../../bril/optimiser/dominators.c:910 (in pass
cleanup_scalar_stores_nonopt during compilation of
___grab_cache_page). Please submit a bug report with this message,
the command line used, type of machine and the output of the
compiler when you add -ED -v to the command line. Please also send
us the pre-processed file that is generated by the -ED option (the
file generated is named <original_filename>.i)
1 catastrophic error detected in the compilation of "../../mm/filemap.c".
Compilation aborted.
cc3089: fatal error: Compilation failed

Look at the code for this function:

/*
* If The page is newly created, increment its refcount and add it to the
* caller ' s lru-buffering pagevec. This function are specifically for
* Generic_file_write ().
*/
Static inline struct page *
__grab_cache_page (struct address_space *mapping, unsigned long index,
struct page **cached_page, struct Pagevec *lru_pvec)
{
int err;
struct page *page;
Repeat
page = find_lock_page (mapping, index);
if (!page) {
if (!*cached_page) {
*cached_page = page_cache_alloc (mapping);
if (!*cached_page)
return NULL;
}
Err = Add_to_page_cache (*cached_page, mapping,
index, Gfp_kernel);
if (err = =-eexist)
Goto repeat;
if (err = = 0) {
page = *cached_page;
Page_cache_get (page);
if (!pagevec_add (Lru_pvec, page))
__pagevec_lru_add (Lru_pvec);
*cached_page = NULL;
}
}
return page;
}

With the last experience, you can be sure that the problem occurs in

*cached_page = page_cache_alloc (mapping);

Modify it to:

*cached_page = __alloc_pages(mapping_gfp_mask(mapping), 0,
NODE_DATA(0)->node_zonelists + gfp_zone(mapping_gfp_mask(mapping)));

Get!