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| author |   Artur Paszkiewicz <artur.paszkiewicz@intel.com> | 2024-08-27 17:35:35 +0200 |
|---|---|---|
| committer |   Song Liu <song@kernel.org> | 2024-08-29 09:37:10 -0700 |
| commit | 0e4aac7366666e1377ce7669b7f63b94c1d616e6 (patch) | |
| tree | 5c4c6d95e12ff6d70ab4a41d7eb1290eb57b5fee /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | md/raid5: use wait_on_bit() for R5_Overlap (diff) | |
| download | wireguard-linux-0e4aac7366666e1377ce7669b7f63b94c1d616e6.tar.xz wireguard-linux-0e4aac7366666e1377ce7669b7f63b94c1d616e6.zip | |
md/raid5: only add to wq if reshape is in progress
Now that actual overlaps are not handled on the wait_for_overlap wq
anymore, the remaining cases when we wait on this wq are limited to
reshape. If reshape is not in progress, don't add to the wq in
raid5_make_request() because add_wait_queue() / remove_wait_queue()
operations take a spinlock and cause noticeable contention when multiple
threads are submitting requests to the mddev.
Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Link: https://lore.kernel.org/r/20240827153536.6743-3-artur.paszkiewicz@intel.com
Signed-off-by: Song Liu <song@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions