From: Peng Tao <bergwolf@gmail.com>
To: Trond.Myklebust@netapp.com
Cc: bharrosh@panasas.com, linux-nfs@vger.kernel.org,
Peng Tao <tao.peng@emc.com>
Subject: [PATCH-v3 1/3] NFS: track direct IO left bytes
Date: Tue, 14 Aug 2012 21:52:22 +0800 [thread overview]
Message-ID: <1344952344-1435-1-git-send-email-bergwolf@gmail.com> (raw)
Signed-off-by: Peng Tao <tao.peng@emc.com>
---
fs/nfs/direct.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index 34a6282..c39f775 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -78,6 +78,7 @@ struct nfs_direct_req {
atomic_t io_count; /* i/os we're waiting for */
spinlock_t lock; /* protect completion state */
ssize_t count, /* bytes actually processed */
+ bytes_left, /* bytes left to be sent */
error; /* any reported error */
struct completion completion; /* wait for i/o completion */
@@ -390,6 +391,7 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_pageio_descriptor *de
user_addr += req_len;
pos += req_len;
count -= req_len;
+ dreq->bytes_left -= req_len;
}
/* The nfs_page now hold references to these pages */
nfs_direct_release_pages(pagevec, npages);
@@ -456,6 +458,7 @@ static ssize_t nfs_direct_read(struct kiocb *iocb, const struct iovec *iov,
goto out;
dreq->inode = inode;
+ dreq->bytes_left = iov_length(iov, nr_segs);
dreq->ctx = get_nfs_open_context(nfs_file_open_context(iocb->ki_filp));
dreq->l_ctx = nfs_get_lock_context(dreq->ctx);
if (dreq->l_ctx == NULL)
@@ -706,6 +709,7 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_pageio_descriptor *d
user_addr += req_len;
pos += req_len;
count -= req_len;
+ dreq->bytes_left -= req_len;
}
/* The nfs_page now hold references to these pages */
nfs_direct_release_pages(pagevec, npages);
@@ -855,6 +859,7 @@ static ssize_t nfs_direct_write(struct kiocb *iocb, const struct iovec *iov,
goto out;
dreq->inode = inode;
+ dreq->bytes_left = count;
dreq->ctx = get_nfs_open_context(nfs_file_open_context(iocb->ki_filp));
dreq->l_ctx = nfs_get_lock_context(dreq->ctx);
if (dreq->l_ctx == NULL)
--
1.7.1.262.g5ef3d
next reply other threads:[~2012-08-14 13:54 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-14 13:52 Peng Tao [this message]
2012-08-14 13:52 ` [PATCH-v3 2/3] NFS41: send real write size in layoutget Peng Tao
2012-08-14 13:52 ` [PATCH-v3 3/3] NFS41: send real read " Peng Tao
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