NFSD: Fix off-by-one in DRC bucket pruning limit

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nfsd_prune_bucket_locked() evicts an entry before checking
the freed count against @max. The check uses "++freed > max",
which does not break until freed exceeds max, resulting in
max + 1 evictions. Use ">=" so the limit stated in the
function comment is honored.

Fixes: a9507f6af1 ("NFSD: Replace nfsd_prune_bucket()")
Cc: stable@vger.kernel.org
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: NeilBrown <neil@brown.name>
Link: https://patch.msgid.link/20260717001232.438792-2-cel@kernel.org
Signed-off-by: Chuck Lever <cel@kernel.org>

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Chuck Lever 2026-07-16 20:12:28 -04:00

parent 1c0d8861c0

commit d0728723c8

1 changed files with 1 additions and 1 deletions

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fs/nfsd/nfscache.c

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