Trond Myklebust f14816f2f9 nfsd: Replace use of rwsem with errseq_t
commit 555dbf1a9aac6d3150c8b52fa35f768a692f4eeb upstream.

The nfsd_file nf_rwsem is currently being used to separate file write
and commit instances to ensure that we catch errors and apply them to
the correct write/commit.
We can improve scalability at the expense of a little accuracy (some
extra false positives) by replacing the nf_rwsem with more careful
use of the errseq_t mechanism to track errors across the different
operations.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
[ cel: rebased on zero-verifier fix ]
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-06-22 14:13:12 +02:00
..
2020-09-25 18:01:26 -04:00
2022-02-16 12:54:17 +01:00
2020-09-25 18:01:26 -04:00
2022-06-22 14:13:12 +02:00