Commit 7e94d6c4 authored by Trond Myklebust's avatar Trond Myklebust

NFS: Don't fsync twice for O_SYNC/IS_SYNC files

generic_file_write_iter() will already do an fsync on our behalf
if the file descriptor is O_SYNC or the file is marked as IS_SYNC.
Signed-off-by: default avatarTrond Myklebust <trond.myklebust@primarydata.com>
parent 9fba8e30
......@@ -645,12 +645,10 @@ static const struct vm_operations_struct nfs_file_vm_ops = {
.page_mkwrite = nfs_vm_page_mkwrite,
};
static int nfs_need_sync_write(struct file *filp, struct inode *inode)
static int nfs_need_check_write(struct file *filp, struct inode *inode)
{
struct nfs_open_context *ctx;
if (IS_SYNC(inode) || (filp->f_flags & O_DSYNC))
return 1;
ctx = nfs_file_open_context(filp);
if (test_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags) ||
nfs_ctx_key_to_expire(ctx))
......@@ -700,8 +698,8 @@ ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from)
if (result > 0)
written = result;
/* Return error values for O_DSYNC and IS_SYNC() */
if (result >= 0 && nfs_need_sync_write(file, inode)) {
/* Return error values */
if (result >= 0 && nfs_need_check_write(file, inode)) {
int err = vfs_fsync(file, 0);
if (err < 0)
result = err;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment