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Michal Hocko
752ade68cb
There are many code paths opencoding kvmalloc. Let's use the helper instead. The main difference to kvmalloc is that those users are usually not considering all the aspects of the memory allocator. E.g. allocation requests <= 32kB (with 4kB pages) are basically never failing and invoke OOM killer to satisfy the allocation. This sounds too disruptive for something that has a reasonable fallback - the vmalloc. On the other hand those requests might fallback to vmalloc even when the memory allocator would succeed after several more reclaim/compaction attempts previously. There is no guarantee something like that happens though. This patch converts many of those places to kv[mz]alloc* helpers because they are more conservative. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Michal Hocko <[email protected]> Reviewed-by: Boris Ostrovsky <[email protected]> # Xen bits Acked-by: Kees Cook <[email protected]> Acked-by: Vlastimil Babka <[email protected]> Acked-by: Andreas Dilger <[email protected]> # Lustre Acked-by: Christian Borntraeger <[email protected]> # KVM/s390 Acked-by: Dan Williams <[email protected]> # nvdim Acked-by: David Sterba <[email protected]> # btrfs Acked-by: Ilya Dryomov <[email protected]> # Ceph Acked-by: Tariq Toukan <[email protected]> # mlx4 Acked-by: Leon Romanovsky <[email protected]> # mlx5 Cc: Martin Schwidefsky <[email protected]> Cc: Heiko Carstens <[email protected]> Cc: Herbert Xu <[email protected]> Cc: Anton Vorontsov <[email protected]> Cc: Colin Cross <[email protected]> Cc: Tony Luck <[email protected]> Cc: "Rafael J. Wysocki" <[email protected]> Cc: Ben Skeggs <[email protected]> Cc: Kent Overstreet <[email protected]> Cc: Santosh Raspatur <[email protected]> Cc: Hariprasad S <[email protected]> Cc: Yishai Hadas <[email protected]> Cc: Oleg Drokin <[email protected]> Cc: "Yan, Zheng" <[email protected]> Cc: Alexander Viro <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Eric Dumazet <[email protected]> Cc: David Miller <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.