diff mbox

[07/40] nfsd: do filp_close in sc_free callback for lock stateids

Message ID 1405954972-28904-8-git-send-email-jlayton@primarydata.com (mailing list archive)
State New, archived
Headers show

Commit Message

Jeff Layton July 21, 2014, 3:02 p.m. UTC 
Releasing locks when we unhash the stateid instead of doing so only when
the stateid is actually released will be problematic in later patches
when we need to protect the unhashing with spinlocks. Move it into the
sc_free operation instead.

Signed-off-by: Jeff Layton <jlayton@primarydata.com>
---
 fs/nfsd/nfs4state.c | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

Comments

Christoph Hellwig July 27, 2014, 1:37 p.m. UTC | #1 
On Mon, Jul 21, 2014 at 11:02:19AM -0400, Jeff Layton wrote:
> Releasing locks when we unhash the stateid instead of doing so only when
> the stateid is actually released will be problematic in later patches
> when we need to protect the unhashing with spinlocks. Move it into the
> sc_free operation instead.
> 
> Signed-off-by: Jeff Layton <jlayton@primarydata.com>

Looks reasonable except that sc_free is now initialized twice for
lock stateids.

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diff mbox

Patch

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 7b329b28734c..cedf86a3b9b7 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -911,6 +911,18 @@  static void nfs4_free_generic_stateid(struct nfs4_stid *stid)
 	nfs4_free_stid(stateid_slab, stid);
 }
 
+static void nfs4_free_lock_stateid(struct nfs4_stid *stid)
+{
+	struct nfs4_ol_stateid *stp = openlockstateid(stid);
+	struct nfs4_lockowner *lo = lockowner(stp->st_stateowner);
+	struct file *file;
+
+	file = find_any_file(stp->st_stid.sc_file);
+	if (file)
+		filp_close(file, (fl_owner_t)lo);
+	nfs4_free_generic_stateid(stid);
+}
+
 static void put_generic_stateid(struct nfs4_ol_stateid *stp)
 {
 	nfs4_put_stid(&stp->st_stid);
@@ -918,14 +930,9 @@  static void put_generic_stateid(struct nfs4_ol_stateid *stp)
 
 static void __release_lock_stateid(struct nfs4_ol_stateid *stp)
 {
-	struct file *file;
-
 	list_del(&stp->st_locks);
 	unhash_generic_stateid(stp);
 	unhash_stid(&stp->st_stid);
-	file = find_any_file(stp->st_stid.sc_file);
-	if (file)
-		filp_close(file, (fl_owner_t)lockowner(stp->st_stateowner));
 	put_generic_stateid(stp);
 }
 
@@ -4720,6 +4727,7 @@  alloc_init_lock_stateid(struct nfs4_lockowner *lo, struct nfs4_file *fp, struct
 	stp->st_stateowner = &lo->lo_owner;
 	get_nfs4_file(fp);
 	stp->st_stid.sc_file = fp;
+	stp->st_stid.sc_free = nfs4_free_lock_stateid;
 	stp->st_access_bmap = 0;
 	stp->st_deny_bmap = open_stp->st_deny_bmap;
 	stp->st_openstp = open_stp;