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091536
2013 Jan 31
4
[RFC][PATCH 2/2] Btrfs: implement unlocked dio write
...01
== result (iops) ==
write 1 2 4
lock 6234 6184 6181
nolock 6240 7716 8025
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
---
fs/btrfs/inode.c | 24 +++++++++++++-----------
1 file changed, 13 insertions(+), 11 deletions(-)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index d17a04b..091593a 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -6589,31 +6589,33 @@ static ssize_t btrfs_direct_IO(int rw, struct kiocb *iocb,
struct file *file = iocb->ki_filp;
struct inode *inode = file->f_mapping->host;
int flags = 0;
- bool wakeup = false;
+ bool wakeup = true;
int re...