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author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-01-27 12:20:03 -0500 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-01-27 12:20:03 -0500 |
commit | 0531b2aac59c2296570ac52bfc032ef2ace7d5e1 (patch) | |
tree | 4ca454bdc03c24654529bab9c882c1cd5f99a88c /arch/blackfin/boot | |
parent | caf0801e0cc482497c14a9ce349469c33c60beec (diff) |
mm: add new 'read_cache_page_gfp()' helper function
It's a simplified 'read_cache_page()' which takes a page allocation
flag, so that different paths can control how aggressive the memory
allocations are that populate a address space.
In particular, the intel GPU object mapping code wants to be able to do
a certain amount of own internal memory management by automatically
shrinking the address space when memory starts getting tight. This
allows it to dynamically use different memory allocation policies on a
per-allocation basis, rather than depend on the (static) address space
gfp policy.
The actual new function is a one-liner, but re-organizing the helper
functions to the point where you can do this with a single line of code
is what most of the patch is all about.
Tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/blackfin/boot')
0 files changed, 0 insertions, 0 deletions