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authorTrond Myklebust <Trond.Myklebust@netapp.com>2012-05-31 12:22:33 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-31 11:41:36 -0700
commit1d59d61f606547f0712aa6971f91f71154071c99 (patch)
treecb2fd4b9ce3e3ee9440d566d43ea350221edfc8e /fs/nfs
parent2d117403b30cd7301af60d7d54b279a9f566d10d (diff)
NFS: Ensure that setattr and getattr wait for O_DIRECT write completion
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>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/direct.c15
-rw-r--r--fs/nfs/inode.c5
-rw-r--r--fs/nfs/internal.h4
3 files changed, 20 insertions, 4 deletions
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index 23d170bc44f4..ad2775d3e219 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -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;
}
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 2f6f78c4b42d..e605d695dbcb 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -418,8 +418,10 @@ nfs_setattr(struct dentry *dentry, struct iattr *attr)
return 0;
/* Write all dirty data */
- if (S_ISREG(inode->i_mode))
+ if (S_ISREG(inode->i_mode)) {
+ nfs_inode_dio_wait(inode);
nfs_wb_all(inode);
+ }
fattr = nfs_alloc_fattr();
if (fattr == NULL)
@@ -503,6 +505,7 @@ int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
/* Flush out writes to the server in order to update c/mtime. */
if (S_ISREG(inode->i_mode)) {
+ nfs_inode_dio_wait(inode);
err = filemap_write_and_wait(inode->i_mapping);
if (err)
goto out;
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 1848a7275592..18f99ef71343 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -369,6 +369,10 @@ extern int nfs_migrate_page(struct address_space *,
/* direct.c */
void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo,
struct nfs_direct_req *dreq);
+static inline void nfs_inode_dio_wait(struct inode *inode)
+{
+ inode_dio_wait(inode);
+}
/* nfs4proc.c */
extern void __nfs4_read_done_cb(struct nfs_read_data *);