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|a3fd9d9e||noreply||Nov. 30, 2016, 11:18 p.m.||Convert zio_buf_alloc() consumers
In multiple cases zio_buf_alloc() was used instead of kmem_alloc() or vmem_alloc(). This was often done because the allocations could be large and it was easy to use zfs_buf_alloc() for them. But this isn't ideal for allocations which are small or short lived. In these cases it is better to use kmem_alloc() or vmem_alloc(). If possible we want to avoid the case where we have slabs allocated for kmem caches which are rarely used. Note for small allocations vmem_alloc() will be internally converted to kmem_alloc(). Therefore as long as large allocations are infrequent and short lived the penalty for using vmem_alloc() is small. Reviewed-by: Chunwei Chen <email@example.com> Signed-off-by: Brian Behlendorf <firstname.lastname@example.org> Closes #5409cgit
|ebc7f2b8||gjb||Nov. 30, 2016, 10 p.m.||Revert r309314, which breaks installing ports.|
|58a639b7||cem||Nov. 30, 2016, 9:59 p.m.||ioat(4): Fix 'bogus completion_pending' KASSERT|
|7657defc||noreply||Nov. 30, 2016, 9:48 p.m.||Introduce ARC Buffer Data (ABD)
ZFS currently uses ARC buffers which are backed by virtual memory. While functional, there are some major problems with this approach which can be observed on all OpenZFS platforms. ABD was designed to address these issues and includes contributions from OpenZFS developers from multiple platforms. While all OpenZFS platforms will benefit from ABD this functionality is critical for Linux. Unlike the other OpenZFS platforms the Linux kernel discourages extensive use of virtual memory. The provided interfaces are not optimized for frequent allocations from the virtual address space. To maintain good performance a kmem cache is used which contains relatively long lived slabs backed by virtual memory. The downside to the approach is that those slabs can become highly fragmented resulting in an inefficient use of memory. Another issue is that on 32-bit systems the available virtual address space in the kernel is only a small fraction of total system memory. This means the ARC size is highly constrained which hurts performance and make allocating memory difficult and OOMs more likely. ABD is designed to address these issues by using scatter lists of pages for data buffers. This removes the need for slabs which resolves the fragmentation issue. It also allows high memory pages to be allocated which alleviates the virtual address space pressure on 32-bit systems. For metadata buffers, which are small, linear ABDs are allocated from the slab. This is preferable because there are many places in the code which expect to be able to read from a given offset in the buffer. Using linear ABDs means none of that code needs to be modified. The majority of these buffers are allocated with kmalloc so there's minimal impact of the virtual address space. Tested-by: Kash Pande <email@example.com> Tested-by: kernelOfTruth <firstname.lastname@example.org> Tested-by: RageLtMan <rageltman@sempervictus> Tested-by: DHE <email@example.com> Reviewed-by: Chunwei Chen <firstname.lastname@example.org> Reviewed-by: Dan Kimmel <email@example.com> Reviewed-by: David Quigley <firstname.lastname@example.org> Reviewed-by: Gvozden Neskovic <email@example.com> Reviewed-by: Tom Caputi <firstname.lastname@example.org> Reviewed-by: Isaac Huang <email@example.com> Reviewed-by: Jinshan Xiong <firstname.lastname@example.org> Signed-off-by: Brian Behlendorf <email@example.com> Closes #3441 Closes #5135cgit
|26e28783||dim||Nov. 30, 2016, 7:06 p.m.||Cleanup old debug dirs in delete-old-dirs target
Any .debug or .symbols files under /usr/lib/debug which correspond to OLD_FILES entries in ObsoleteFiles.inc are also automatically cleaned up by the delete-old target. Make this also apply to any OLD_DIRS entries. Reviewed by: emaste MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D8683cgit ViewVC
|dc521a58||vangyzen||Nov. 30, 2016, 6:34 p.m.||Include limits.h for CHAR_MAX|
|ce43e88d||behlendorf1||Nov. 30, 2016, 6:27 p.m.||Enable ro_props_001_pos
This script was disabled as the avail/used space changed slightly. Add sync_pool() and a short delay after snapshots are created to ensure everything in flight has been written. Reviewed-by: Brian Behlendorf <firstname.lastname@example.org> Signed-off-by: ChaoyuZhang <email@example.com> Closes #5201 Closes #5419cgit
|2d44b04b||behlendorf1||Nov. 30, 2016, 5:48 p.m.||Fix coverity defects: CID 154591|
|a54b7de0||andrew||Nov. 30, 2016, 2:18 p.m.||Fix the PCI host generic FDT driver to call into the common code and not|
|d2314cb3||andrew||Nov. 30, 2016, 2:17 p.m.||Fix the alloc function the ThunderX PCIe driver calls, the previous|
|f534f01f||rwatson||Nov. 30, 2016, 2:02 p.m.||Clarify warning message when failing to configure audit on user login:|
|2daeee1a||andrew||Nov. 30, 2016, 10:17 a.m.||Mark the Alpine ethernet driver as FDT only. It calls|
|c430fbd3||andrew||Nov. 30, 2016, 9:47 a.m.||Move the FDT specific parts of the GIC diver softc to the FDT attachment.|
|59202261||andrew||Nov. 30, 2016, 9:45 a.m.||Only include FDT headders when building for FDT.|
|b6fe583c||mav||Nov. 30, 2016, 9:27 a.m.||Add `gmirror create` subcommand, alike to gstripe, gconcat, etc.|