3abc3ae553
This contains a couple of fixes: - fid refcounting was incorrect in some corner cases and would leak resources, only freed at umount time. The first three commits fix three such cases - cache=loose or fscache was broken when trying to write a partial page to a file with no read permission since the rework a few releases ago. The fix taken here is just to restore old behavior of using the special 'writeback_fid' for such reads, which is open as root/RDWR and such not get complains that we try to read on a WRONLY fid. Long-term it'd be nice to get rid of this and not issue the read at all (skip cache?) in such cases, but that direction hasn't progressed -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE/IPbcYBuWt0zoYhOq06b7GqY5nAFAmKynEUACgkQq06b7GqY 5nBOwQ//c1AoCuzt8gXefaBy9dDvaq/Cg5a339bUGmsvRJS8dHWTx2/HO7ncf3wE 59uRh+ipLxXmHTkkLz13JtaVAFQ2HYlxKwmyvakBIjGVgDC+IYm9vkPHb2Z2yIBY D6XTuNufnb+/lrqekrmHiT2+eJOi2MhxPNyjXUAML7KKny6LpzdwymF/KIEsCbR8 EbRrSf+KTnCssIfJlrZUbbk2UkbW18uG/V1MgThN3rgj+bgG/oB+lU6BELCIOQc2 +0io2dg+ZgfJIK2fpBKF64vK2ILMSNEJ8obkfWgqOyI/LBOya38Z/cSbuzPMBwZd P2A2zQmjp8oYSbXM8EGaSFTXix28Lxljk5vvT/xbEipzyUU3UZAPJJE6UX9M66UF d/FHA8ljDVuRrknM0yDv5sqBYRB8uuEBtUiKGBO6k5zPTn0A7oEzEviryMCiEUF5 1fbe/PWrFLnZMB2hWZ1aiY0tyopivp67zo6mRY/qehCihb/QlpiVNLGCC1e3eMdu FHPR3pSD1B5jFurOB8Wn1zUMjsZsnIjvpOET4WiP9pU9SJpOCd2fsAo69POHZVfA NIJxZ9MqW+3/eK+7CDmwnJLhTNRvvrQmTH55Ex61HTcn+2KFIqizCr/I6sQUl/g0 teAB8T5UlS6+nDDWfZouUiXcm0He2C56RyJOCYlagHD1qYm//Gg= =2yZw -----END PGP SIGNATURE----- Merge tag '9p-for-5.19-rc4' of https://github.com/martinetd/linux Pull 9pfs fixes from Dominique Martinet: "A couple of fid refcount and fscache fixes: - fid refcounting was incorrect in some corner cases and would leak resources, only freed at umount time. The first three commits fix three such cases - 'cache=loose' or fscache was broken when trying to write a partial page to a file with no read permission since the rework a few releases ago. The fix taken here is just to restore old behavior of using the special 'writeback_fid' for such reads, which is open as root/RDWR and such not get complains that we try to read on a WRONLY fid. Long-term it'd be nice to get rid of this and not issue the read at all (skip cache?) in such cases, but that direction hasn't progressed" * tag '9p-for-5.19-rc4' of https://github.com/martinetd/linux: 9p: fix EBADF errors in cached mode 9p: Fix refcounting during full path walks for fid lookups 9p: fix fid refcount leak in v9fs_vfs_get_link 9p: fix fid refcount leak in v9fs_vfs_atomic_open_dotl
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.