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| Filename | Latest commit message | Latest commit date |
|---|---|---|
4be5975aea
Further fix the file locking in the afs filesystem client in a number of
ways, including:
(1) Don't submit the operation to obtain a lock from the server in a work
queue context, but rather do it in the process context of whoever
issued the requesting system call.
(2) The owner of the file_lock struct at the front of the pending_locks
queue now owns right to talk to the server.
(3) Write locks can be instantly granted if they don't overlap with any
other locks *and* we have a write lock on the server.
(4) In the event of an authentication/permission error, all other matching
pending locks requests are also immediately aborted.
(5) Properly use VFS core locks_lock_file_wait() to distribute the server
lock amongst local client locks, including waiting for the lock to
become available.
Test with:
sqlite3 /afs/.../scratch/billings.sqlite <<EOF
CREATE TABLE hosts (
hostname varchar(80),
shorthost varchar(80),
room varchar(30),
building varchar(30),
PRIMARY KEY(shorthost)
);
EOF
With the version of sqlite3 that I have, this should fail consistently with
EAGAIN, whether or not the program is straced (which introduces some delays
between lock syscalls).
Fixes:
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| 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 | ||
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.