cifs: do not search for channel if server is terminating

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In order to scale down the channels, the following sequence
of operations happen:
1. server struct is marked for terminate
2. the channel is deallocated in the ses->chans array
3. at a later point the cifsd thread actually terminates the server

Between 2 and 3, there can be calls to find the channel for
a server struct. When that happens, there can be an ugly warning
that's logged. But this is expected.

So this change does two things:
1. in cifs_ses_get_chan_index, if server->terminate is set, return
2. always make sure server->terminate is set with chan_lock held

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

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This commit is contained in:

Shyam Prasad N 2024-02-01 11:15:28 +00:00 • committed by Steve French

parent e77e15fa5e

commit 88675b22d3

2 changed files with 5 additions and 1 deletions

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4

fs/smb/client/sess.c

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2

fs/smb/client/smb2pdu.c

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