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linux/include/trace
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David Howells 0e8ed2d66d afs: Give an afs_server object a ref on the afs_cell object it points to 
[ Upstream commit 1f0fc3374f ]

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: d2ddc776a4 ("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>
History 2025-03-07 18:25:29 +01:00
..
events afs: Give an afs_server object a ref on the afs_cell object it points to 2025-03-07 18:25:29 +01:00
misc NFS: trace: show TIMEDOUT instead of 0x6e 2024-09-01 10:04:55 -04:00
stages tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
bpf_probe.h bpf: pass whole link instead of prog when triggering raw tracepoint 2024-03-19 23:05:33 -07:00
define_custom_trace.h tracing: Add TRACE_CUSTOM_EVENT() macro 2022-03-11 11:49:24 -05:00
define_trace.h tracepoint: Optimize using static_call() 2020-09-01 09:58:06 +02:00
perf.h perf/tracing: Use stage6 of tracing to not duplicate macros 2023-01-25 10:31:24 -05:00
syscall.h tracepoints: Migrate to use SYSCALL_WORK flag 2020-11-16 21:53:15 +01:00
trace_custom_events.h tracing: Rename the staging files for trace_events 2022-04-02 08:40:04 -04:00
trace_events.h tracing/ftrace: disable preemption in syscall probe 2024-12-14 20:03:58 +01:00