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| author | David Howells <dhowells@redhat.com> | 2025-02-18 19:22:48 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-03-07 18:25:29 +0100 |
| commit | 0e8ed2d66da0d745b3970ff2c5219839c6a2c002 (patch) | |
| tree | eb62bf51506b303ff383bb75020698ca433925c2 /include/trace | |
| parent | a38b394f465010568ebc23eb29e17b9e4f173ce2 (diff) | |
| download | linux-0e8ed2d66da0d745b3970ff2c5219839c6a2c002.tar.gz linux-0e8ed2d66da0d745b3970ff2c5219839c6a2c002.tar.bz2 linux-0e8ed2d66da0d745b3970ff2c5219839c6a2c002.zip | |
afs: Give an afs_server object a ref on the afs_cell object it points to
[ Upstream commit 1f0fc3374f3345ff1d150c5c56ac5016e5d3826a ]
Give an afs_server object a ref on the afs_cell object it points to so that
the cell doesn't get deleted before the server record.
Whilst this is circular (cell -> vol -> server_list -> server -> cell), the
ref only pins the memory, not the lifetime as that's controlled by the
activity counter. When the volume's activity counter reaches 0, it
detaches from the cell and discards its server list; when a cell's activity
counter reaches 0, it discards its root volume. At that point, the
circularity is cut.
Fixes: d2ddc776a458 ("afs: Overhaul volume and server record caching and fileserver rotation")
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: Simon Horman <horms@kernel.org>
cc: linux-afs@lists.infradead.org
Link: https://patch.msgid.link/20250218192250.296870-6-dhowells@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/afs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/trace/events/afs.h b/include/trace/events/afs.h index 9a75590227f2..3dddfc6abf0e 100644 --- a/include/trace/events/afs.h +++ b/include/trace/events/afs.h @@ -173,6 +173,7 @@ enum yfs_cm_operation { EM(afs_cell_trace_get_queue_dns, "GET q-dns ") \ EM(afs_cell_trace_get_queue_manage, "GET q-mng ") \ EM(afs_cell_trace_get_queue_new, "GET q-new ") \ + EM(afs_cell_trace_get_server, "GET server") \ EM(afs_cell_trace_get_vol, "GET vol ") \ EM(afs_cell_trace_insert, "INSERT ") \ EM(afs_cell_trace_manage, "MANAGE ") \ @@ -180,6 +181,7 @@ enum yfs_cm_operation { EM(afs_cell_trace_put_destroy, "PUT destry") \ EM(afs_cell_trace_put_queue_work, "PUT q-work") \ EM(afs_cell_trace_put_queue_fail, "PUT q-fail") \ + EM(afs_cell_trace_put_server, "PUT server") \ EM(afs_cell_trace_put_vol, "PUT vol ") \ EM(afs_cell_trace_see_source, "SEE source") \ EM(afs_cell_trace_see_ws, "SEE ws ") \ |