diff options
| -rw-r--r-- | fs/locks.c | 17 | ||||
| -rw-r--r-- | fs/nfsd/nfs4state.c | 17 | ||||
| -rw-r--r-- | include/linux/fs.h | 2 |
3 files changed, 23 insertions, 13 deletions
@@ -427,9 +427,11 @@ static int flock_to_posix_lock(struct file *filp, struct file_lock *fl, } /* default lease lock manager operations */ -static void lease_break_callback(struct file_lock *fl) +static bool +lease_break_callback(struct file_lock *fl) { kill_fasync(&fl->fl_fasync, SIGIO, POLL_MSG); + return false; } static void @@ -1382,7 +1384,7 @@ int __break_lease(struct inode *inode, unsigned int mode, unsigned int type) { int error = 0; struct file_lock *new_fl; - struct file_lock *fl; + struct file_lock *fl, **before; unsigned long break_time; int want_write = (mode & O_ACCMODE) != O_RDONLY; LIST_HEAD(dispose); @@ -1406,7 +1408,9 @@ int __break_lease(struct inode *inode, unsigned int mode, unsigned int type) break_time++; /* so that 0 means no break time */ } - for (fl = inode->i_flock; fl && IS_LEASE(fl); fl = fl->fl_next) { + for (before = &inode->i_flock; + ((fl = *before) != NULL) && IS_LEASE(fl); + before = &fl->fl_next) { if (!leases_conflict(fl, new_fl)) continue; if (want_write) { @@ -1420,9 +1424,14 @@ int __break_lease(struct inode *inode, unsigned int mode, unsigned int type) fl->fl_flags |= FL_DOWNGRADE_PENDING; fl->fl_downgrade_time = break_time; } - fl->fl_lmops->lm_break(fl); + if (fl->fl_lmops->lm_break(fl)) + locks_delete_lock(before, &dispose); } + fl = inode->i_flock; + if (!fl || !IS_LEASE(fl)) + goto out; + if (mode & O_NONBLOCK) { trace_break_lease_noblock(inode, new_fl); error = -EWOULDBLOCK; diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 604ab6d..d1b8515 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -3391,18 +3391,20 @@ static void nfsd_break_one_deleg(struct nfs4_delegation *dp) } /* Called from break_lease() with i_lock held. */ -static void nfsd_break_deleg_cb(struct file_lock *fl) +static bool +nfsd_break_deleg_cb(struct file_lock *fl) { + bool ret = false; struct nfs4_file *fp = (struct nfs4_file *)fl->fl_owner; struct nfs4_delegation *dp; if (!fp) { WARN(1, "(%p)->fl_owner NULL\n", fl); - return; + return ret; } if (fp->fi_had_conflict) { WARN(1, "duplicate break on %p\n", fp); - return; + return ret; } /* * We don't want the locks code to timeout the lease for us; @@ -3414,17 +3416,16 @@ static void nfsd_break_deleg_cb(struct file_lock *fl) spin_lock(&fp->fi_lock); fp->fi_had_conflict = true; /* - * If there are no delegations on the list, then we can't count on this - * lease ever being cleaned up. Set the fl_break_time to jiffies so that - * time_out_leases will do it ASAP. The fact that fi_had_conflict is now - * true should keep any new delegations from being hashed. + * If there are no delegations on the list, then return true + * so that the lease code will go ahead and delete it. */ if (list_empty(&fp->fi_delegations)) - fl->fl_break_time = jiffies; + ret = true; else list_for_each_entry(dp, &fp->fi_delegations, dl_perfile) nfsd_break_one_deleg(dp); spin_unlock(&fp->fi_lock); + return ret; } static int diff --git a/include/linux/fs.h b/include/linux/fs.h index f419f71..ed4e189 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -872,7 +872,7 @@ struct lock_manager_operations { void (*lm_put_owner)(struct file_lock *); void (*lm_notify)(struct file_lock *); /* unblock callback */ int (*lm_grant)(struct file_lock *, int); - void (*lm_break)(struct file_lock *); + bool (*lm_break)(struct file_lock *); int (*lm_change)(struct file_lock **, int, struct list_head *); void (*lm_setup)(struct file_lock *, void **); }; |