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author | Damien Le Moal <damien.lemoal@opensource.wdc.com> | 2022-04-12 12:54:39 +0300 |
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committer | Damien Le Moal <damien.lemoal@opensource.wdc.com> | 2022-04-21 02:37:56 +0300 |
commit | 87c9ce3ffec9060cf7556ed4d3c9e582c8baf575 (patch) | |
tree | 6ca5a8eacf07f3ace7989bfd8c34548db980bde3 /Documentation/filesystems/zonefs.rst | |
parent | 9277a6d4fbd4aaa668b19b819015f87f0da53a38 (diff) | |
download | linux-87c9ce3ffec9060cf7556ed4d3c9e582c8baf575.tar.xz |
zonefs: Add active seq file accounting
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>
Diffstat (limited to 'Documentation/filesystems/zonefs.rst')
0 files changed, 0 insertions, 0 deletions