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NFS: drop unused nfs_direct_req bytes_left 

Now that we're calculating how large a remaining IO should be based
on the current request's offset, we no longer need to track bytes_left on
each struct nfs_direct_req.  Drop the field, and clean up the direct
request tracepoints.

Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Benjamin Coddington 2023-11-17 06:25:14 -05:00 committed by Anna Schumaker
parent 8a6291bf3b
commit 1fd5394e6a
3 changed files with 4 additions and 9 deletions
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6
fs/nfs/direct.c
View File

@ -369,7 +369,6 @@ static ssize_t nfs_direct_read_schedule_iovec(struct nfs_direct_req *dreq,
bytes -= req_len;
requested_bytes += req_len;
pos += req_len;
dreq->bytes_left -= req_len;
}
nfs_direct_release_pages(pagevec, npages);
kvfree(pagevec);
@ -441,7 +440,7 @@ ssize_t nfs_file_direct_read(struct kiocb *iocb, struct iov_iter *iter,
goto out;
dreq->inode = inode;
dreq->bytes_left = dreq->max_count = count;
dreq->max_count = count;
dreq->io_start = iocb->ki_pos;
dreq->ctx = get_nfs_open_context(nfs_file_open_context(iocb->ki_filp));
l_ctx = nfs_get_lock_context(dreq->ctx);
@ -874,7 +873,6 @@ static ssize_t nfs_direct_write_schedule_iovec(struct nfs_direct_req *dreq,
bytes -= req_len;
requested_bytes += req_len;
pos += req_len;
dreq->bytes_left -= req_len;
if (defer) {
nfs_mark_request_commit(req, NULL, &cinfo, 0);
@ -981,7 +979,7 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, struct iov_iter *iter,
goto out;
dreq->inode = inode;
dreq->bytes_left = dreq->max_count = count;
dreq->max_count = count;
dreq->io_start = pos;
dreq->ctx = get_nfs_open_context(nfs_file_open_context(iocb->ki_filp));
l_ctx = nfs_get_lock_context(dreq->ctx);

1
fs/nfs/internal.h
View File

@ -936,7 +936,6 @@ struct nfs_direct_req {
loff_t io_start; /* Start offset for I/O */
ssize_t count, /* bytes actually processed */
max_count, /* max expected count */
bytes_left, /* bytes left to be sent */
error; /* any reported error */
struct completion completion; /* wait for i/o completion */

6
fs/nfs/nfstrace.h
View File

@ -1545,7 +1545,6 @@ DECLARE_EVENT_CLASS(nfs_direct_req_class,
__field(u32, fhandle)
__field(loff_t, offset)
__field(ssize_t, count)
__field(ssize_t, bytes_left)
__field(ssize_t, error)
__field(int, flags)
),
@ -1560,19 +1559,18 @@ DECLARE_EVENT_CLASS(nfs_direct_req_class,
__entry->fhandle = nfs_fhandle_hash(fh);
__entry->offset = dreq->io_start;
__entry->count = dreq->count;
__entry->bytes_left = dreq->bytes_left;
__entry->error = dreq->error;
__entry->flags = dreq->flags;
),
TP_printk(
"error=%zd fileid=%02x:%02x:%llu fhandle=0x%08x "
"offset=%lld count=%zd bytes_left=%zd flags=%s",
"offset=%lld count=%zd flags=%s",
__entry->error, MAJOR(__entry->dev),
MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
__entry->fhandle, __entry->offset,
__entry->count, __entry->bytes_left,
__entry->count,
nfs_show_direct_req_flags(__entry->flags)
)
);