AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-11-24 18:50:54 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

NFS: Clear up state owner lock usage

Browse Source 
can_open_cached() reads values out of the state structure, meaning that
we need the so_lock to have a correct return value.  As a bonus, this
helps clear up some potentially confusing code.

Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Anna Schumaker 2014-09-03 14:15:40 -04:00 committed by Trond Myklebust
parent 0f7a622ca6
commit 61beef75cc
1 changed files with 4 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
fs/nfs/nfs4proc.c
View File

@ -1307,15 +1307,13 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
int ret = -EAGAIN;
for (;;) {
spin_lock(&state->owner->so_lock);
if (can_open_cached(state, fmode, open_mode)) {
spin_lock(&state->owner->so_lock);
if (can_open_cached(state, fmode, open_mode)) {
update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
update_open_stateflags(state, fmode);
spin_unlock(&state->owner->so_lock);
goto out_return_state;
}
spin_unlock(&state->owner->so_lock);
rcu_read_lock();
delegation = rcu_dereference(nfsi->delegation);
if (!can_open_delegated(delegation, fmode)) {