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[0/6,v3] nfsd: allocate/free session-based DRC slots on demand

Message ID 20241206004829.3497925-1-neilb@suse.de (mailing list archive)
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Series nfsd: allocate/free session-based DRC slots on demand | expand

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NeilBrown Dec. 6, 2024, 12:43 a.m. UTC 
Changes from v2:
 - number of slots is increased more quickly.  Every time the highest-number
   slot is used, we increase by at least 20%.
 - when xa_store() is used in a context where we no that no allocation can
   happen, pass '0' as the GFP flag.
 - report target slots as well as total slots in /proc/fs/nfsd/clients/*/info

I've stay with reporting session information in the client info file
rather than creating a directory or using netlink.  I think the client
info file is simple and adequate.

I still haven't added support for CB_RECALL_SLOT.  While it is helpful,
it isn't essential.  I'll probably try to add it after the current
series lands.

Thanks,
NeilBrown