b1d51f67c9
In extent-io-test, there are two invalid tests: - Invalid nodesize for test_eb_bitmaps() Instead of the sectorsize and nodesize combination passed in, we're always using hand-crafted nodesize, e.g: len = (sectorsize < BTRFS_MAX_METADATA_BLOCKSIZE) ? sectorsize * 4 : sectorsize; In above case, if we have 32K page size, then we will get a length of 128K, which is beyond max node size, and obviously invalid. The common page size goes up to 64K so we haven't hit that - Invalid extent buffer bytenr For 64K page size, the only combination we're going to test is sectorsize = nodesize = 64K. However, in that case we will try to test an eb which bytenr is not sectorsize aligned: /* Do it over again with an extent buffer which isn't page-aligned. */ eb = __alloc_dummy_extent_buffer(fs_info, nodesize / 2, len); Sector alignment is a hard requirement for any sector size. The only exception is superblock. But anything else should follow sector size alignment. This is definitely an invalid test case. This patch will fix both problems by: - Honor the sectorsize/nodesize combination Now we won't bother to hand-craft the length and use it as nodesize. - Use sectorsize as the 2nd run extent buffer start This would test the case where extent buffer is aligned to sectorsize but not always aligned to nodesize. Please note that, later subpage related cleanup will reduce extent_buffer::pages[] to exactly what we need, making the sector unaligned extent buffer operations cause problems. Since only extent_io self tests utilize this, this patch is required for all later cleanup/refactoring. Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
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| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
README
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.