diff options
| -rw-r--r-- | fs/autofs4/waitq.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c index 4ac49d038bf3..8fc41705c7cd 100644 --- a/fs/autofs4/waitq.c +++ b/fs/autofs4/waitq.c @@ -81,7 +81,8 @@ static int autofs4_write(struct autofs_sb_info *sbi, spin_unlock_irqrestore(¤t->sighand->siglock, flags); } - return (bytes > 0); + /* if 'wr' returned 0 (impossible) we assume -EIO (safe) */ + return bytes == 0 ? 0 : wr < 0 ? wr : -EIO; } static void autofs4_notify_daemon(struct autofs_sb_info *sbi, @@ -95,6 +96,7 @@ static void autofs4_notify_daemon(struct autofs_sb_info *sbi, } pkt; struct file *pipe = NULL; size_t pktsz; + int ret; pr_debug("wait id = 0x%08lx, name = %.*s, type=%d\n", (unsigned long) wq->wait_queue_token, @@ -169,7 +171,18 @@ static void autofs4_notify_daemon(struct autofs_sb_info *sbi, mutex_unlock(&sbi->wq_mutex); if (autofs4_write(sbi, pipe, &pkt, pktsz)) + switch (ret = autofs4_write(sbi, pipe, &pkt, pktsz)) { + case 0: + break; + case -ENOMEM: + case -ERESTARTSYS: + /* Just fail this one */ + autofs4_wait_release(sbi, wq->wait_queue_token, ret); + break; + default: autofs4_catatonic_mode(sbi); + break; + } fput(pipe); } |