luck/tmp_suning_uos_patched
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NFS: Add a helper to sync both O_DIRECT and buffered writes

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Then apply it to nfs_setattr() and nfs_getattr().

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust 2015-03-25 16:38:33 -04:00
parent 67af7611ec
commit 4d346bea8f
1 changed files with 9 additions and 6 deletions
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15
fs/nfs/inode.c
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@ -133,6 +133,12 @@ void nfs_evict_inode(struct inode *inode)
nfs_clear_inode(inode);
}
static int nfs_sync_inode(struct inode *inode)
{
nfs_inode_dio_wait(inode);
return nfs_wb_all(inode);
}
/**
* nfs_sync_mapping - helper to flush all mmapped dirty data to disk
*/
@ -525,10 +531,8 @@ nfs_setattr(struct dentry *dentry, struct iattr *attr)
trace_nfs_setattr_enter(inode);
/* Write all dirty data */
if (S_ISREG(inode->i_mode)) {
nfs_inode_dio_wait(inode);
nfs_wb_all(inode);
}
if (S_ISREG(inode->i_mode))
nfs_sync_inode(inode);
fattr = nfs_alloc_fattr();
if (fattr == NULL)
@ -644,8 +648,7 @@ int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
trace_nfs_getattr_enter(inode);
/* 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);
err = nfs_sync_inode(inode);
if (err)
goto out;
}