hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

NFSv4: nfs_inode_find_state_and_recover() should check all stateids 

Modify the helper nfs_inode_find_state_and_recover() so that it
can check all open/lock/delegation state trackers on that inode for
whether or not they need are affected by a revoked stateid error.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Tested-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Trond Myklebust 2016-09-22 13:39:07 -04:00 committed by Anna Schumaker
parent 059b43e974
commit 6c2d8f8d30
3 changed files with 60 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
fs/nfs/delegation.c
View File

@ -1001,6 +1001,25 @@ restart:
rcu_read_unlock();
}
void nfs_inode_find_delegation_state_and_recover(struct inode *inode,
const nfs4_stateid *stateid)
{
struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
struct nfs_delegation *delegation;
bool found = false;
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
if (delegation &&
nfs4_stateid_match_other(&delegation->stateid, stateid)) {
nfs_mark_test_expired_delegation(NFS_SERVER(inode), delegation);
found = true;
}
rcu_read_unlock();
if (found)
nfs4_schedule_state_manager(clp);
}
/**
* nfs_delegations_present - check for existence of delegations
* @clp: client state handle

2
fs/nfs/delegation.h
View File

@ -66,6 +66,8 @@ void nfs_mark_delegation_referenced(struct nfs_delegation *delegation);
int nfs4_have_delegation(struct inode *inode, fmode_t flags);
int nfs4_check_delegation(struct inode *inode, fmode_t flags);
bool nfs4_delegation_flush_on_close(const struct inode *inode);
void nfs_inode_find_delegation_state_and_recover(struct inode *inode,
const nfs4_stateid *stateid);
#endif

44
fs/nfs/nfs4state.c
View File

@ -1337,6 +1337,35 @@ int nfs4_schedule_stateid_recovery(const struct nfs_server *server, struct nfs4_
}
EXPORT_SYMBOL_GPL(nfs4_schedule_stateid_recovery);
static struct nfs4_lock_state *
nfs_state_find_lock_state_by_stateid(struct nfs4_state *state,
const nfs4_stateid *stateid)
{
struct nfs4_lock_state *pos;
list_for_each_entry(pos, &state->lock_states, ls_locks) {
if (!test_bit(NFS_LOCK_INITIALIZED, &pos->ls_flags))
continue;
if (nfs4_stateid_match_other(&pos->ls_stateid, stateid))
return pos;
}
return NULL;
}
static bool nfs_state_lock_state_matches_stateid(struct nfs4_state *state,
const nfs4_stateid *stateid)
{
bool found = false;
if (test_bit(LK_STATE_IN_USE, &state->flags)) {
spin_lock(&state->state_lock);
if (nfs_state_find_lock_state_by_stateid(state, stateid))
found = true;
spin_unlock(&state->state_lock);
}
return found;
}
void nfs_inode_find_state_and_recover(struct inode *inode,
const nfs4_stateid *stateid)
{
@ -1351,14 +1380,19 @@ void nfs_inode_find_state_and_recover(struct inode *inode,
state = ctx->state;
if (state == NULL)
continue;
if (!test_bit(NFS_DELEGATED_STATE, &state->flags))
if (nfs4_stateid_match_other(&state->stateid, stateid)) {
nfs4_state_mark_reclaim_nograce(clp, state);
found = true;
continue;
if (!nfs4_stateid_match(&state->stateid, stateid))
continue;
nfs4_state_mark_reclaim_nograce(clp, state);
found = true;
}
if (nfs_state_lock_state_matches_stateid(state, stateid)) {
nfs4_state_mark_reclaim_nograce(clp, state);
found = true;
}
}
spin_unlock(&inode->i_lock);
nfs_inode_find_delegation_state_and_recover(inode, stateid);
if (found)
nfs4_schedule_state_manager(clp);
}