1GRAB_CACHE_PAGE_NOWA(9)   Memory Management in Linux   GRAB_CACHE_PAGE_NOWA(9)
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NAME

6       grab_cache_page_nowait - returns locked page at given index in given
7       cache
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SYNOPSIS

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

14       mapping
15           target address_space
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17       index
18           the page index
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DESCRIPTION

21       Same as grab_cache_page, but do not wait if the page is unavailable.
22       This is intended for speculative data generators, where the data can be
23       regenerated if the page couldn't be grabbed. This routine should be
24       safe to call while holding the lock for another page.
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26       Clear __GFP_FS when allocating the page to avoid recursion into the fs
27       and deadlock against the caller's locked page.
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30Kernel Hackers Manual 2.6.       November 2011         GRAB_CACHE_PAGE_NOWA(9)
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