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This patchset makes use of the new bulk page allocation interface to reduce the overhead of allocating large numbers of pages in a loop. The first two patches are refactoring buffer memory allocation and converting the uncached buffer path to use the same page allocation path, followed by converting the page allocation path to use bulk allocation. The rest of the patches are then consolidation of the page allocation and freeing code to simplify the code and remove a chunk of unnecessary abstraction. This is largely based on a series of changes made by Christoph Hellwig. -----BEGIN PGP SIGNATURE----- iQJIBAABCgAyFiEEmJOoJ8GffZYWSjj/regpR/R1+h0FAmC+6OwUHGRhdmlkQGZy b21vcmJpdC5jb20ACgkQregpR/R1+h21QQ/8C0f7wq1OKwNI2oRubf6J8jtttiRS SD2TA03AP2OIOKx4y2G0h0dJeX9tgnbLerIlpfT80nHDoBgKHbZCYSEHQT0DscYo fuwQTVR8RCklKspjUlCGR+Gbm6vI8HakK1lAppw168e4c6t8wX1KiSibwaVTQdaZ NaXUqTUzGiNq+iiLS6fW3mJ3PKWFJYyrDOSR2jIPbUGIJdejRCGe0xVnu+hIsz+y c2gSGCB+j3cYaazhlJTDYPGja3Wq3eR+Ya9i1GcA1tJiJLsu0ZjaVQ69Bl4dud2F c3OyhFK0El1VMSEVb3hY8gTpAO02jNWSnB2Zlidt0h4ZJVAxKus0xe2w3eS4uST2 hcMI3lwjdzRQuoBwOgXQ+CpYVv2wI8HPNLTSR+NYcC2IZaCNieFRWdTYwXrAJBB3 H09m04GT/7TkkrYHFD1zRtIedP4DZ6MZn/33bufNxEt1NRCFw5AFAEUFfjDA317A 4nByCmU6XjmmpI/XLixwu0BYCfKVB4UsrgOyzXBy7ZU0+pIser+ynP1V4d9Bb43Y xVQ8S0QirT7gqXjx75mD4B4qkXZ5nrz5Z7fSn6YU4TwqsYtZYlsBauLlWmmHp9MT CP4PA4j+CQORhfZzWXw2ViXYGoIssc1cw5i4JB6a4u/OaDi19dYkE6SO8P3b9GSm khHqWgcTC4VGpmc= =JsrV -----END PGP SIGNATURE----- Merge tag 'xfs-buf-bulk-alloc-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs into xfs-5.14-merge2 xfs: buffer cache bulk page allocation This patchset makes use of the new bulk page allocation interface to reduce the overhead of allocating large numbers of pages in a loop. The first two patches are refactoring buffer memory allocation and converting the uncached buffer path to use the same page allocation path, followed by converting the page allocation path to use bulk allocation. The rest of the patches are then consolidation of the page allocation and freeing code to simplify the code and remove a chunk of unnecessary abstraction. This is largely based on a series of changes made by Christoph Hellwig. * tag 'xfs-buf-bulk-alloc-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs: xfs: merge xfs_buf_allocate_memory xfs: cleanup error handling in xfs_buf_get_map xfs: get rid of xb_to_gfp() xfs: simplify the b_page_count calculation xfs: remove ->b_offset handling for page backed buffers xfs: move page freeing into _xfs_buf_free_pages() xfs: merge _xfs_buf_get_pages() xfs: use alloc_pages_bulk_array() for buffers xfs: use xfs_buf_alloc_pages for uncached buffers xfs: split up xfs_buf_allocate_memory |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
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.