This is the patch for check do_direct_IO() return val.
At do_direct_IO(), sometimes dio_get_page() will return -EFAULT/-ENOMEM,
according to orig source, it will go on left work. buf for dio_get_page()
return a error will made many useful member of dio not initialized like
dio->map_bh and others, at this point, kernel will panic.
Signed-off-by: Joe Jin <[email protected]>
---
--- linux-2.6.22/fs/direct-io.c.orig 2007-07-26 11:32:27.000000000 +0800
+++ linux-2.6.22/fs/direct-io.c 2007-07-26 11:33:58.000000000 +0800
@@ -1031,7 +1031,9 @@ direct_io_worker(int rw, struct kiocb *i
((dio->final_block_in_request - dio->block_in_file) <<
blkbits);
- if (ret) {
+ if (ret == -EFAULT || ret == -ENOMEM)
+ goto out;
+ else if (ret) {
dio_cleanup(dio);
break;
}
@@ -1113,6 +1115,7 @@ direct_io_worker(int rw, struct kiocb *i
} else
BUG_ON(ret != -EIOCBQUEUED);
+out:
return ret;
}
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
