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authorTrond Myklebust <Trond.Myklebust@netapp.com>2012-08-14 00:54:45 +0200
committerTrond Myklebust <Trond.Myklebust@netapp.com>2012-09-28 22:03:04 +0200
commit2a369153c82e0c83621b3e71d8f0c53394705bda (patch)
treebed0f7bfde6d8eac2b58bf0f7c452afb5f906b40 /fs/nfs/nfs4state.c
parentNFS: Convert nfs_get_lock_context to return an ERR_PTR on failure (diff)
downloadlinux-2a369153c82e0c83621b3e71d8f0c53394705bda.tar.xz
linux-2a369153c82e0c83621b3e71d8f0c53394705bda.zip
NFS: Clean up helper function nfs4_select_rw_stateid()
We want to be able to pass on the information that the page was not dirtied under a lock. Instead of adding a flag parameter, do this by passing a pointer to a 'struct nfs_lock_owner' that may be NULL. Also reuse this structure in struct nfs_lock_context to carry the fl_owner_t and pid_t. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/nfs4state.c')
-rw-r--r--fs/nfs/nfs4state.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 55148def5540..03a4e7825f3b 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -911,14 +911,22 @@ int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl)
}
static bool nfs4_copy_lock_stateid(nfs4_stateid *dst, struct nfs4_state *state,
- fl_owner_t fl_owner, pid_t fl_pid)
+ const struct nfs_lockowner *lockowner)
{
struct nfs4_lock_state *lsp;
+ fl_owner_t fl_owner;
+ pid_t fl_pid;
bool ret = false;
+
+ if (lockowner == NULL)
+ goto out;
+
if (test_bit(LK_STATE_IN_USE, &state->flags) == 0)
goto out;
+ fl_owner = lockowner->l_owner;
+ fl_pid = lockowner->l_pid;
spin_lock(&state->state_lock);
lsp = __nfs4_find_lock_state(state, fl_owner, fl_pid, NFS4_ANY_LOCK_TYPE);
if (lsp != NULL && (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0) {
@@ -946,11 +954,11 @@ static void nfs4_copy_open_stateid(nfs4_stateid *dst, struct nfs4_state *state)
* requests.
*/
void nfs4_select_rw_stateid(nfs4_stateid *dst, struct nfs4_state *state,
- fmode_t fmode, fl_owner_t fl_owner, pid_t fl_pid)
+ fmode_t fmode, const struct nfs_lockowner *lockowner)
{
if (nfs4_copy_delegation_stateid(dst, state->inode, fmode))
return;
- if (nfs4_copy_lock_stateid(dst, state, fl_owner, fl_pid))
+ if (nfs4_copy_lock_stateid(dst, state, lockowner))
return;
nfs4_copy_open_stateid(dst, state);
}