Merge branch 'ipmr-remove-rwlocks'

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Eric Dumazet says:

====================
ipmr: get rid of rwlocks

We need to get rid of rwlocks in networking stacks,
if read_lock() is (ab)used from softirq context.

As discussed recently [1], rwlock are unfair by design in this case,
and writers can starve and trigger soft lockups.

This series convert ipmr code (both IPv4 and IPv6 families)
to RCU and spinlocks.

[1] https://lkml.org/lkml/2022/6/17/272

v2: fixed two typos, and resent because patch 19/19
    did not make it to patchwork.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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This commit is contained in:

David S. Miller 2022-06-24 11:34:38 +01:00

parent 7fcb820c76 a96f7a6a60

commit 23f94f1bc1

4 changed files with 255 additions and 230 deletions

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15

include/linux/mroute_base.h

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217

net/ipv4/ipmr.c

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51

net/ipv4/ipmr_base.c

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202

net/ipv6/ip6mr.c

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