From: Dan Carpenter <dan.carpenter@oracle.com>
To: James Simmons <jsimmons@infradead.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
devel@driverdev.osuosl.org,
Andreas Dilger <andreas.dilger@intel.com>,
Oleg Drokin <oleg.drokin@intel.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Jinshan Xiong <jinshan.xiong@intel.com>,
Lustre Development List <lustre-devel@lists.lustre.org>
Subject: Re: [PATCH 04/22] staging: lustre: osc: handle osc eviction correctly
Date: Mon, 5 Dec 2016 23:55:37 +0300 [thread overview]
Message-ID: <20161205205537.GB31465@mwanda> (raw)
In-Reply-To: <1480726409-20350-5-git-send-email-jsimmons@infradead.org>
On Fri, Dec 02, 2016 at 07:53:11PM -0500, James Simmons wrote:
> @@ -3183,8 +3182,10 @@ static int discard_cb(const struct lu_env *env, struct cl_io *io,
> /* page is top page. */
> info->oti_next_index = osc_index(ops) + 1;
> if (cl_page_own(env, io, page) == 0) {
> - KLASSERT(ergo(page->cp_type == CPT_CACHEABLE,
> - !PageDirty(cl_page_vmpage(page))));
> + if (!ergo(page->cp_type == CPT_CACHEABLE,
> + !PageDirty(cl_page_vmpage(page))))
> + CL_PAGE_DEBUG(D_ERROR, env, page,
> + "discard dirty page?\n");
I don't understand the point of the ergo macro. There are way too many
double negatives (some of them hidden for my small brain). How is that
simpler than just writing it out:
if (page->cp_type == CPT_CACHEABLE &&
PageDirty(cl_page_vmpage(page))
CL_PAGE_DEBUG(D_ERROR, env, page, "discard dirty page?\n");
regards,
dan carpenter
next prev parent reply other threads:[~2016-12-05 20:56 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-03 0:53 [PATCH 00/22] Next batch of missing work for upstream client James Simmons
2016-12-03 0:53 ` [PATCH 01/22] staging: lustre: llite: clear LLIF_DATA_MODIFIED in atomic James Simmons
2016-12-03 0:53 ` [PATCH 02/22] staging: lustre: osc: fix debug log message formatting James Simmons
2016-12-03 0:53 ` [PATCH 03/22] staging: lustre: mdt: race between open and migrate James Simmons
2016-12-03 0:53 ` [PATCH 04/22] staging: lustre: osc: handle osc eviction correctly James Simmons
2016-12-05 20:55 ` Dan Carpenter [this message]
2016-12-05 23:03 ` Oleg Drokin
2016-12-07 23:16 ` James Simmons
2016-12-03 0:53 ` [PATCH 05/22] staging: lustre: lmv: remove nlink check in lmv_revalidate_slaves James Simmons
2016-12-05 20:57 ` Dan Carpenter
2016-12-03 0:53 ` [PATCH 06/22] staging: lustre: llog: reset llog bitmap James Simmons
2016-12-03 0:53 ` [PATCH 07/22] staging: lustre: obdclass: lu_site_purge() to handle purge-all James Simmons
2016-12-03 0:53 ` [PATCH 08/22] staging: lustre: clio: revise read ahead algorithm James Simmons
2016-12-03 0:53 ` [PATCH 09/22] staging: lustre: llite: Add client mount opt to ignore suppress_pings James Simmons
2016-12-03 0:53 ` [PATCH 10/22] staging: lustre: obdclass: limit lu_site hash table size on clients James Simmons
2016-12-03 0:53 ` [PATCH 11/22] staging: lustre: mdt: fail FMODE_WRITE open if the client is read only James Simmons
2016-12-03 0:53 ` [PATCH 12/22] staging: lustre: libcfs: report hnode value for cfs_hash_putref James Simmons
2016-12-03 0:53 ` [PATCH 13/22] staging: lustre: statahead: set sai_index_wait with lli_sa_lock held James Simmons
2016-12-03 0:53 ` [PATCH 14/22] staging: lustre: obd: add callback for llog_cat_process_or_fork James Simmons
2016-12-06 9:59 ` Greg Kroah-Hartman
2016-12-03 0:53 ` [PATCH 15/22] staging: lustre: rpc: increase bulk size James Simmons
2016-12-03 0:53 ` [PATCH 16/22] staging: lustre: llite: Invoke file_update_time in page_mkwrite James Simmons
2016-12-03 0:53 ` [PATCH 17/22] staging: lustre: clio: remove mtime check in vvp_io_fault_start() James Simmons
2016-12-03 0:53 ` [PATCH 18/22] staging: lustre: import: don't reconnect during connect interpret James Simmons
2016-12-03 0:53 ` [PATCH 19/22] staging: lustre: llite: ll_dir_ioctl cleanup of redundant comparisons James Simmons
2016-12-03 0:53 ` [PATCH 20/22] staging: lustre: osc: set lock data for readahead lock James Simmons
2016-12-03 0:53 ` [PATCH 21/22] staging: lustre: remove set but unused variables James Simmons
2016-12-03 0:53 ` [PATCH 22/22] staging: lustre: libcfs: remove lnet upcall code James Simmons
2016-12-06 10:00 ` [PATCH 00/22] Next batch of missing work for upstream client Greg Kroah-Hartman
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