NAME¶

grab_cache_page_nowait - returns locked page at given index in given cache

SYNOPSIS¶

struct page * grab_cache_page_nowait(struct address_space * mapping, pgoff_t index);

ARGUMENTS¶

mapping

index

DESCRIPTION¶

Same as grab_cache_page, but do not wait if the page is unavailable. This is intended for speculative data generators, where the data can be regenerated if the page couldn´t be grabbed. This routine should be safe to call while holding the lock for another page.

Clear __GFP_FS when allocating the page to avoid recursion into the fs and deadlock against the caller´s locked page.

COPYRIGHT¶