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afs: Rearrange afs_select_fileserver() a little

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Rearrange afs_select_fileserver() a little to put the use_server chunk
before the next_server chunk so that with the removal of a couple of gotos
the main path through the function is all one sequence.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells 2018-02-06 06:26:30 +00:00
parent 63dc4e4aa5
commit 16280a15be
1 changed files with 20 additions and 22 deletions
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42
fs/afs/rotate.c
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@ -330,27 +330,6 @@ bool afs_select_fileserver(struct afs_fs_cursor *fc)
if (!afs_start_fs_iteration(fc, vnode))
goto failed;
goto use_server;
next_server:
_debug("next");
afs_end_cursor(&fc->ac);
afs_put_cb_interest(afs_v2net(vnode), fc->cbi);
fc->cbi = NULL;
fc->index++;
if (fc->index >= fc->server_list->nr_servers)
fc->index = 0;
if (fc->index != fc->start)
goto use_server;
/* That's all the servers poked to no good effect. Try again if some
* of them were busy.
*/
if (fc->flags & AFS_FS_CURSOR_VBUSY)
goto restart_from_beginning;
fc->ac.error = -EDESTADDRREQ;
goto failed;
use_server:
_debug("use");
@ -401,7 +380,6 @@ bool afs_select_fileserver(struct afs_fs_cursor *fc)
fc->ac.start = READ_ONCE(alist->index);
fc->ac.index = fc->ac.start;
goto iterate_address;
iterate_address:
ASSERT(fc->ac.alist);
@ -415,6 +393,26 @@ bool afs_select_fileserver(struct afs_fs_cursor *fc)
_leave(" = t");
return true;
next_server:
_debug("next");
afs_end_cursor(&fc->ac);
afs_put_cb_interest(afs_v2net(vnode), fc->cbi);
fc->cbi = NULL;
fc->index++;
if (fc->index >= fc->server_list->nr_servers)
fc->index = 0;
if (fc->index != fc->start)
goto use_server;
/* That's all the servers poked to no good effect. Try again if some
* of them were busy.
*/
if (fc->flags & AFS_FS_CURSOR_VBUSY)
goto restart_from_beginning;
fc->ac.error = -EDESTADDRREQ;
goto failed;
failed:
fc->flags |= AFS_FS_CURSOR_STOP;
afs_end_cursor(&fc->ac);