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-----BEGIN PGP SIGNATURE----- iQIcBAABAgAGBQJa55HYAAoJEAAOaEEZVoIVbr4QAICUweu5RqbcNm6/zGZkYJvP Cmk9bRhqluM3sx7RpDpsgde12z5j6qt+MbS1k+uZ7+V5gsO25jYuQYNGs6io6IEL WzO81HsMmqqqV30MI0/S4ffaYDtqTfJdKkbWvvV7aoFUZpz5oHNjqQM30hSRzy+i 1e6EfxtzUvaavekCvVCqQoDwXWMp1jaxCIFPNiIY82NPmszovydaZiZORL6qRXIM x/n3gWLJv2c0iRr6PBLIwKVOqPmdWwsmgSXTvP5/IH6LuQOZjmfHCJaxA8HZeFyz WvVTaH7aGtYp/pZt6UzvUlCXXcDKVYR4RmCfHW5+OXBsRQPfkSWKRguDXsvedrHe vQN7csCR47AwBsGtli6EF/VzwQnbCLjxOJ8kxVItPHlplYWeRsQCNw0JT9i6wB2k OIuRwekQTYUTXAHYm7XM21wS+JJbcTfANIfmmmfIrcF/Z/Zard5/UuCPSaKcizTy +qVhYE7m+cNYvARgxYrDvCXO7fnef6fj+cC4DrPmqfkvaJfd4U61Yls7QDi9NuO9 DNehjrWOR1ZLlI98aHjs65tilVFA++k2YdR8283ZqXE1tksUI3w/JvBa/h/H/9lr F290fgEe31yMAv3ky0QKm3Glr5Qu9I6AOSWWIHCmW7w6CkFB/K/1iKgy3h2g6rPL 3cMUf/uV4mA9RzAhSgx3 =pLgb -----END PGP SIGNATURE----- Merge tag 'errseq-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux Pull errseq infrastructure fix from Jeff Layton: "The PostgreSQL developers recently had a spirited discussion about the writeback error handling in Linux, and reached out to us about a behavoir change to the code that bit them when the errseq_t changes were merged. When we changed to using errseq_t for tracking writeback errors, we lost the ability for an application to see a writeback error that occurred before the open on which the fsync was issued. This was problematic for PostgreSQL which offloads fsync calls to a completely separate process from the DB writers. This patch restores that ability. If the errseq_t value in the inode does not have the SEEN flag set, then we just return 0 for the sample. That ensures that any recorded error is always delivered at least once. Note that we might still lose the error if the inode gets evicted from the cache before anything can reopen it, but that was the case before errseq_t was merged. At LSF/MM we had some discussion about keeping inodes with unreported writeback errors around in the cache for longer (possibly indefinitely), but that's really a separate problem" * tag 'errseq-v4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux: errseq: Always report a writeback error once |
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| 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.
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.