kernel/linux.git/fs/dlm/lowcomms.c, branch v6.12.81

dlm: make tcp still work in multi-link env

2025-05-29T09:02:14+00:00

[ Upstream commit 03d2b62208a336a3bb984b9465ef6d89a046ea22 ] This patch bypasses multi-link errors in TCP mode, allowing dlm to operate on the first tcp link. Signed-off-by: Heming Zhao Signed-off-by: David Teigland Signed-off-by: Sasha Levin

dlm: fix srcu_read_lock() return type to int

2025-02-08T08:56:50+00:00

[ Upstream commit 57cdd1a1cf1464199678f9338049b63fb5d5b41c ] The return type of srcu_read_lock() is int and not bool. Whereas we using the ret variable only to evaluate a bool type of dlm_lowcomms_con_has_addr() to check if an address is already being set. Fixes: 6f0b0b5d7ae7 ("fs: dlm: remove dlm_node_addrs lookup list") Signed-off-by: Alexander Aring Signed-off-by: David Teigland Signed-off-by: Sasha Levin

dlm: do synchronized socket connect call

2024-08-08T20:15:08+00:00

To avoid -EINPROGRESS cases on connect that just ends in a retry we just call connect in a synchronized way to wait until its done. Since commit dbb751ffab0b ("fs: dlm: parallelize lowcomms socket handling") we have a non ordered workqueue running for serving the DLM sockets that allows us to call send/recv for each DLM socket connection in parallel. Before each worker needed to wait until the previous worker was done and probably the reason why connect() was called in an asynchronous way to not block other workers. This is however not necessary anymore as other socket handling workers don't need to wait. Signed-off-by: Alexander Aring Signed-off-by: David Teigland

fs: dlm: remove unused struct 'dlm_processed_nodes'

2024-06-12T20:50:29+00:00

The last use of 'dlm_processed_nodes' was removed in commit 1696c75f1864 ("fs: dlm: add send ack threshold and append acks to msgs"). Remove it. Signed-off-by: Dr. David Alan Gilbert Signed-off-by: David Teigland

dlm: remove unused parameter in dlm_midcomms_addr

2024-05-31T16:04:54+00:00

This patch removes an parameter which is currently not used by dlm_midcomms_addr(). Signed-off-by: Alexander Aring Signed-off-by: David Teigland

dlm: do message processing in softirq context

2024-04-09T16:47:51+00:00

Move dlm message processing from an ordered workqueue context to an ordered softirq context. Handling dlm messages in softirq will allow requests to be cleared more quickly and efficiently, and should avoid longer queues of incomplete requests. Later patches are expected to run completion/blocking callbacks directly from this message processing context, further reducing context switches required to complete a request. In the longer term, concurrent message processing could be implemented. Signed-off-by: Alexander Aring Signed-off-by: David Teigland

dlm: use spin_lock_bh for message processing

2024-04-09T16:45:23+00:00

Use spin_lock_bh for all spinlocks involved in message processing, in preparation for softirq message processing. DLM lock requests from user space involve dlm processing in user context, in addition to the standard kernel context, necessitating bh variants. Signed-off-by: Alexander Aring Signed-off-by: David Teigland

dlm: remove allocation parameter in msg allocation

2024-04-09T14:58:14+00:00

Remove the context parameter for message allocations and always use GFP_ATOMIC. This prepares for softirq message processing. Signed-off-by: Alexander Aring Signed-off-by: David Teigland

dlm: Simplify the allocation of slab caches in dlm_lowcomms_msg_cache_create

2024-04-02T20:24:40+00:00

Use the new KMEM_CACHE() macro instead of direct kmem_cache_create to simplify the creation of SLAB caches. Signed-off-by: Kunwu Chan Acked-by: Alexander Aring Signed-off-by: Alexander Aring Signed-off-by: David Teigland

dlm: use kernel_connect() and kernel_bind()

2023-11-16T17:58:42+00:00

Recent changes to kernel_connect() and kernel_bind() ensure that callers are insulated from changes to the address parameter made by BPF SOCK_ADDR hooks. This patch wraps direct calls to ops->connect() and ops->bind() with kernel_connect() and kernel_bind() to protect callers in such cases. Link: https://lore.kernel.org/netdev/9944248dba1bce861375fcce9de663934d933ba9.camel@redhat.com/ Fixes: d74bad4e74ee ("bpf: Hooks for sys_connect") Fixes: 4fbac77d2d09 ("bpf: Hooks for sys_bind") Cc: stable@vger.kernel.org Signed-off-by: Jordan Rife Signed-off-by: David Teigland