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| author | Otavio Salvador <otavio@ossystems.com.br> | 2019-12-19 00:14:33 -0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-12-19 00:14:33 -0300 |
| commit | fa8a03bec68d9ef89da72277bd3501ed3daa6217 (patch) | |
| tree | 3d3218332bcb34cb0afa01d6ad996058a3dbcb77 /fs/nfsd/nfs4state.c | |
| parent | 6b774eec1f9d3064e9b33634dfa99d5666d0a73a (diff) | |
| parent | 1ddf624b0b268fdc0b80b1de618b98f8d117afea (diff) | |
Merge pull request #55 from toradex/4.14-2.0.x-imx
4.14 2.0.x imx
Diffstat (limited to 'fs/nfsd/nfs4state.c')
| -rw-r--r-- | fs/nfsd/nfs4state.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 94128643ec1a..87ee9cbf7dcb 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -1502,11 +1502,16 @@ static u32 nfsd4_get_drc_mem(struct nfsd4_channel_attrs *ca) { u32 slotsize = slot_bytes(ca); u32 num = ca->maxreqs; - int avail; + unsigned long avail, total_avail; spin_lock(&nfsd_drc_lock); - avail = min((unsigned long)NFSD_MAX_MEM_PER_SESSION, - nfsd_drc_max_mem - nfsd_drc_mem_used); + total_avail = nfsd_drc_max_mem - nfsd_drc_mem_used; + avail = min((unsigned long)NFSD_MAX_MEM_PER_SESSION, total_avail); + /* + * Never use more than a third of the remaining memory, + * unless it's the only way to give this client a slot: + */ + avail = clamp_t(unsigned long, avail, slotsize, total_avail/3); num = min_t(int, num, avail / slotsize); nfsd_drc_mem_used += num * slotsize; spin_unlock(&nfsd_drc_lock); |