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authorTrond Myklebust <Trond.Myklebust@netapp.com>2007-05-22 10:22:27 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2007-05-24 11:18:18 -0400
commitd4a8f3677fe2c2fc86443254fe42825e244c194d (patch)
tree7b3b31104103208c852ad30616667aeb5256f34e /fs
parent749e146e01cf87ce3c1d6f6077b877471b04df5b (diff)
downloadblackbird-op-linux-d4a8f3677fe2c2fc86443254fe42825e244c194d.tar.gz
blackbird-op-linux-d4a8f3677fe2c2fc86443254fe42825e244c194d.zip
NFS: Fix nfs_direct_dirty_pages()
We only need to dirty the pages that were actually read in. Also convert nfs_direct_dirty_pages() to call set_page_dirty() instead of set_page_dirty_lock(). A call to lock_page() is unacceptable in an rpciod callback function. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/direct.c29
1 files changed, 18 insertions, 11 deletions
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index 6c588ec84d1c..0c542ec92d5b 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -122,13 +122,19 @@ ssize_t nfs_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov, loff_
return -EINVAL;
}
-static void nfs_direct_dirty_pages(struct page **pages, unsigned int npages)
+static void nfs_direct_dirty_pages(struct page **pages, unsigned int pgbase, size_t count)
{
+ unsigned int npages;
unsigned int i;
+
+ if (count == 0)
+ return;
+ pages += (pgbase >> PAGE_SHIFT);
+ npages = (count + (pgbase & ~PAGE_MASK) + PAGE_SIZE - 1) >> PAGE_SHIFT;
for (i = 0; i < npages; i++) {
struct page *page = pages[i];
if (!PageCompound(page))
- set_page_dirty_lock(page);
+ set_page_dirty(page);
}
}
@@ -224,17 +230,18 @@ static void nfs_direct_read_result(struct rpc_task *task, void *calldata)
if (nfs_readpage_result(task, data) != 0)
return;
- nfs_direct_dirty_pages(data->pagevec, data->npages);
- nfs_direct_release_pages(data->pagevec, data->npages);
-
spin_lock(&dreq->lock);
-
- if (likely(task->tk_status >= 0))
- dreq->count += data->res.count;
- else
+ if (unlikely(task->tk_status < 0)) {
dreq->error = task->tk_status;
-
- spin_unlock(&dreq->lock);
+ spin_unlock(&dreq->lock);
+ } else {
+ dreq->count += data->res.count;
+ spin_unlock(&dreq->lock);
+ nfs_direct_dirty_pages(data->pagevec,
+ data->args.pgbase,
+ data->res.count);
+ }
+ nfs_direct_release_pages(data->pagevec, data->npages);
if (put_dreq(dreq))
nfs_direct_complete(dreq);
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