diff options
| author | Kent Overstreet <kent.overstreet@linux.dev> | 2023-11-22 18:42:53 -0500 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2023-11-28 14:08:46 +0100 |
| commit | 71eb6b6b0ba93b1467bccff57b5de746b09113d2 (patch) | |
| tree | 50d8617b7f3cc91869e92507787303e110635722 /fs/mnt_idmapping.c | |
| parent | b7638ad0c7802ea854599ce753d0e6d20690f7e2 (diff) | |
fs/aio: obey min_nr when doing wakeups
I've been observing workloads where IPIs due to wakeups in
aio_complete() are ~15% of total CPU time in the profile. Most of those
wakeups are unnecessary when completion batching is in use in
io_getevents().
This plumbs min_nr through via the wait eventry, so that aio_complete()
can avoid doing unnecessary wakeups.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Link: https://lore.kernel.org/r/20231122234257.179390-1-kent.overstreet@linux.dev
Cc: Benjamin LaHaise <bcrl@kvack.org>
Cc: Christian Brauner <brauner@kernel.org>
Cc: <linux-aio@kvack.org>
Cc: <linux-fsdevel@vger.kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'fs/mnt_idmapping.c')
0 files changed, 0 insertions, 0 deletions