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0201c054c2
Modify the name of the existing zswap_pool_get() to zswap_pool_tryget() to be representative of the call it makes to percpu_ref_tryget(). A subsequent patch will introduce a new zswap_pool_get() that calls percpu_ref_get(). The intent behind this change is for higher level zswap API such as zswap_store() to call zswap_pool_tryget() to check upfront if the pool's refcount is "0" (which means it could be getting destroyed) and to handle this as an error condition. zswap_store() would proceed only if zswap_pool_tryget() returns success, and any additional pool refcounts that need to be obtained for compressing sub-pages in a large folio could simply call zswap_pool_get(). Link: https://lkml.kernel.org/r/20241001053222.6944-4-kanchana.p.sridhar@intel.com Signed-off-by: Kanchana P Sridhar <kanchana.p.sridhar@intel.com> Acked-by: Yosry Ahmed <yosryahmed@google.com> Reviewed-by: Chengming Zhou <chengming.zhou@linux.dev> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Nhat Pham <nphamcs@gmail.com> Cc: "Huang, Ying" <ying.huang@intel.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Usama Arif <usamaarif642@gmail.com> Cc: Wajdi Feghali <wajdi.k.feghali@intel.com> Cc: "Zou, Nanhai" <nanhai.zou@intel.com> Cc: Barry Song <21cnbao@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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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 reStructuredText 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.