Use TASK_KILLABLE to allow wait_on_retry_sync_kiocb to return -EINTR.
All callers then check the return value and break out of their loops.
Signed-off-by: Matthew Wilcox <[email protected]>
---
fs/read_write.c | 17 ++++++++++++-----
1 files changed, 12 insertions(+), 5 deletions(-)
diff --git a/fs/read_write.c b/fs/read_write.c
index 124693e..3196a3b 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -218,14 +218,15 @@ Einval:
return -EINVAL;
}
-static void wait_on_retry_sync_kiocb(struct kiocb *iocb)
+static int wait_on_retry_sync_kiocb(struct kiocb *iocb)
{
- set_current_state(TASK_UNINTERRUPTIBLE);
+ set_current_state(TASK_KILLABLE);
if (!kiocbIsKicked(iocb))
schedule();
else
kiocbClearKicked(iocb);
__set_current_state(TASK_RUNNING);
+ return fatal_signal_pending(current) ? -EINTR : 0;
}
ssize_t do_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *ppos)
@@ -242,7 +243,9 @@ ssize_t do_sync_read(struct file *filp, char __user *buf, size_t len, loff_t *pp
ret = filp->f_op->aio_read(&kiocb, &iov, 1, kiocb.ki_pos);
if (ret != -EIOCBRETRY)
break;
- wait_on_retry_sync_kiocb(&kiocb);
+ ret = wait_on_retry_sync_kiocb(&kiocb);
+ if (ret)
+ break;
}
if (-EIOCBQUEUED == ret)
@@ -300,7 +303,9 @@ ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t len, lof
ret = filp->f_op->aio_write(&kiocb, &iov, 1, kiocb.ki_pos);
if (ret != -EIOCBRETRY)
break;
- wait_on_retry_sync_kiocb(&kiocb);
+ ret = wait_on_retry_sync_kiocb(&kiocb);
+ if (ret)
+ break;
}
if (-EIOCBQUEUED == ret)
@@ -466,7 +471,9 @@ ssize_t do_sync_readv_writev(struct file *filp, const struct iovec *iov,
ret = fn(&kiocb, iov, nr_segs, kiocb.ki_pos);
if (ret != -EIOCBRETRY)
break;
- wait_on_retry_sync_kiocb(&kiocb);
+ ret = wait_on_retry_sync_kiocb(&kiocb);
+ if (ret)
+ break;
}
if (ret == -EIOCBQUEUED)
--
1.4.4.2
-
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