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The sole remaining caller of kmem_zalloc_greedy is bulkstat, which uses it to grab 1-4 pages for staging of inobt records. The infinite loop in the greedy allocation function is causing hangs[1] in generic/269, so just get rid of the greedy allocator in favor of kmem_zalloc_large. This makes bulkstat somewhat more likely to ENOMEM if there's really no pages to spare, but eliminates a source of hangs. [1] http://lkml.kernel.org/r/20170301044634.rgidgdqqiiwsmfpj%40XZHOUW.usersys.redhat.com Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> --- v2: remove single-page fallback |
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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.