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87c9ce3ffe
Modify struct zonefs_sb_info to add the s_active_seq_files atomic to count the number of seq files representing a zone that is partially written or explicitly open, that is, to count sequential files with a zone that is in an active state on the device. The helper function zonefs_account_active() is introduced to update this counter whenever a file is written or truncated. This helper is also used in the zonefs_seq_file_write_open() and zonefs_seq_file_write_close() functions when the explicit_open mount option is used. The s_active_seq_files counter is exported through sysfs using the read-only attribute nr_active_seq_files. The device maximum number of active zones is also exported through sysfs with the read-only attribute max_active_seq_files. Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Hans Holmberg <hans.holmberg@wdc.com>
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.