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| author | Keith Busch <kbusch@kernel.org> | 2024-10-07 17:32:35 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-10-22 16:16:32 +0200 |
| commit | 110234da18ab482f6f583d28eff26b9569bf5622 (patch) | |
| tree | 89dcc5b53015bcb0dea90d419785034a34ff9da5 /Documentation/ABI | |
| parent | block: return void from the queue_sysfs_entry load_module method (diff) | |
| download | linux-110234da18ab482f6f583d28eff26b9569bf5622.tar.xz linux-110234da18ab482f6f583d28eff26b9569bf5622.zip | |
block: enable passthrough command statistics
Applications using the passthrough interfaces for IO want to continue
seeing the disk stats. These requests had been fenced off from this
block layer feature. While the block layer doesn't necessarily know what
a passthrough command does, we do know the data size and direction,
which is enough to account for the command's stats.
Since tracking these has the potential to produce unexpected results,
the passthrough stats are locked behind a new queue flag that needs to
be enabled with the /sys/block/<dev>/queue/iostats_passthrough
attribute.
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20241007153236.2818562-1-kbusch@meta.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/stable/sysfs-block | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/ABI/stable/sysfs-block b/Documentation/ABI/stable/sysfs-block index cea8856f798d..835361110715 100644 --- a/Documentation/ABI/stable/sysfs-block +++ b/Documentation/ABI/stable/sysfs-block @@ -424,6 +424,13 @@ Description: [RW] This file is used to control (on/off) the iostats accounting of the disk. +What: /sys/block/<disk>/queue/iostats_passthrough +Date: October 2024 +Contact: linux-block@vger.kernel.org +Description: + [RW] This file is used to control (on/off) the iostats + accounting of the disk for passthrough commands. + What: /sys/block/<disk>/queue/logical_block_size Date: May 2009 |