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NFS: Ensure that setattr and getattr wait for O_DIRECT write completion

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Use the same mechanism as the block devices are using, but move the
helper functions from fs/direct-io.c into fs/inode.c to remove the
dependency on CONFIG_BLOCK.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Trond Myklebust
2012-05-31 12:22:33 -04:00
committed by Linus Torvalds
parent 2d117403b3
commit 1d59d61f60
6 changed files with 70 additions and 54 deletions
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15
fs/nfs/direct.c
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@@ -454,6 +454,12 @@ out:
return result;
}
static void nfs_inode_dio_write_done(struct inode *inode)
{
nfs_zap_mapping(inode, inode->i_mapping);
inode_dio_done(inode);
}
#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq)
{
@@ -564,7 +570,7 @@ static void nfs_direct_write_schedule_work(struct work_struct *work)
nfs_direct_write_reschedule(dreq);
break;
default:
nfs_zap_mapping(dreq->inode, dreq->inode->i_mapping);
nfs_inode_dio_write_done(dreq->inode);
nfs_direct_complete(dreq);
}
}
@@ -581,7 +587,7 @@ static void nfs_direct_write_schedule_work(struct work_struct *work)
static void nfs_direct_write_complete(struct nfs_direct_req *dreq, struct inode *inode)
{
nfs_zap_mapping(inode, inode->i_mapping);
nfs_inode_dio_write_done(inode);
nfs_direct_complete(dreq);
}
#endif
@@ -766,14 +772,16 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq,
loff_t pos)
{
struct nfs_pageio_descriptor desc;
struct inode *inode = dreq->inode;
ssize_t result = 0;
size_t requested_bytes = 0;
unsigned long seg;
nfs_pageio_init_write(&desc, dreq->inode, FLUSH_COND_STABLE,
nfs_pageio_init_write(&desc, inode, FLUSH_COND_STABLE,
&nfs_direct_write_completion_ops);
desc.pg_dreq = dreq;
get_dreq(dreq);
atomic_inc(&inode->i_dio_count);
for (seg = 0; seg < nr_segs; seg++) {
const struct iovec *vec = &iov[seg];
@@ -793,6 +801,7 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq,
* generic layer handle the completion.
*/
if (requested_bytes == 0) {
inode_dio_done(inode);
nfs_direct_req_release(dreq);
return result < 0 ? result : -EIO;
}