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author | J. Bruce Fields <bfields@redhat.com> | 2017-09-19 20:51:31 -0400 |
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committer | J. Bruce Fields <bfields@redhat.com> | 2017-10-04 16:25:01 -0400 |
commit | 44d8660d3bb0a1c8363ebcb906af2343ea8e15f6 (patch) | |
tree | ae880e4bda7d39b6e4162e05db962b59e85bedc3 /block | |
parent | 9542446048e01871fd323cba9a1d468b46cfceea (diff) |
nfsd: increase DRC cache limit
An NFSv4.1+ client negotiates the size of its duplicate reply cache size
in the initial CREATE_SESSION request. The server preallocates the
memory for the duplicate reply cache to ensure that we'll never fail to
record the response to a nonidempotent operation.
To prevent a few CREATE_SESSIONs from consuming all of memory we set an
upper limit based on nr_free_buffer_pages(). 1/2^10 has been too
limiting in practice; 1/2^7 is still less than one percent.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'block')
0 files changed, 0 insertions, 0 deletions