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802dc0497b
If 'auto_inval_data' mode is active, then fuse_file_read_iter() will call fuse_update_attributes(), which will check the attribute validity and send a GETATTR request if some of the attributes are no longer valid. The page cache is then invalidated if the size or mtime have changed. Then, if a READ request was sent and reply received (which is the case if the data wasn't cached yet, or if the file is opened for O_DIRECT), the atime attribute is invalidated. This will result in the next read() also triggering a GETATTR, ... This can be fixed by only sending GETATTR if the mode or size are invalid, we don't need to do a refresh if only atime is invalid. More generally, none of the callers of fuse_update_attributes() need an up-to-date atime value, so for now just remove STATX_ATIME from the request mask when attributes are updated for internal use. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> |
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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.