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authorBill O'Donnell <billodo@redhat.com>2015-10-12 18:21:19 +1100
committerDave Chinner <david@fromorbit.com>2015-10-12 18:21:19 +1100
commit225e4635580ce9fb12f8a2dc88473161cd64dbf6 (patch)
tree9baed3b58fdcd58efaf0b2f71c6d9471be1b1236 /fs/xfs/xfs_icache.c
parent80529c45ab66188a0b3814ba31409b31f5fcb53d (diff)
downloadop-kernel-dev-225e4635580ce9fb12f8a2dc88473161cd64dbf6.zip
op-kernel-dev-225e4635580ce9fb12f8a2dc88473161cd64dbf6.tar.gz
xfs: per-filesystem stats in sysfs
This patch implements per-filesystem stats objects in sysfs. It depends on the application of the previous patch series that develops the infrastructure to support both xfs global stats and xfs per-fs stats in sysfs. Stats objects are instantiated when an xfs filesystem is mounted and deleted on unmount. With this patch, the stats directory is created and populated with the familiar stats and stats_clear files. Example: /sys/fs/xfs/sda9/stats/stats /sys/fs/xfs/sda9/stats/stats_clear With this patch, the individual counts within the new per-fs stats file(s) remain at zero. Functions that use the the macros to increment, decrement, and add-to the per-fs stats counts will be covered in a separate new patch to follow this one. Note that the counts within the global stats file (/sys/fs/xfs/stats/stats) advance normally and can be cleared as it was prior to this patch. [dchinner: move setup/teardown to xfs_fs_{fill|put}_super() so it is down before/after any path that uses the per-mount stats. ] Signed-off-by: Bill O'Donnell <billodo@redhat.com> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
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