[LU-10314] implement ladvise dontneed for ZFS Created: 01/Dec/17  Updated: 01/Dec/17

Status: Open
Project: Lustre
Component/s: None
Affects Version/s: Lustre 2.9.0, Lustre 2.10.0
Fix Version/s: None

Type: Improvement Priority: Minor
Reporter: Andreas Dilger Assignee: WC Triage
Resolution: Unresolved Votes: 0
Labels: zfs

Issue Links:
Related
is related to LU-9069 ZFS sanity: FAIL: test_255a Speedup w... Open
Rank (Obsolete): 9223372036854775807

 Description   

The lfs ladvise functionality was added in LU-4931 to allow the client to prefetch data into OSS cache via willread and to drop it from cache via dontneed. ZFS has functionality to implement willread, but is missing the dontneed functionality to drop pages from the OSS cache.
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