diff options
Diffstat (limited to 'fs/locks.c')
| -rw-r--r-- | fs/locks.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/fs/locks.c b/fs/locks.c index 7d627ac0ed87..aed4a957d232 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -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; |