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From: Qu Wenruo <quwenruo@cn.fujitsu.com>
To: <linux-btrfs@vger.kernel.org>
Cc: <lists@colorremedies.com>
Subject: [PATCH v2 3/6] btrfs: Do chunk level degradation check for remount
Date: Mon, 6 Mar 2017 16:58:52 +0800	[thread overview]
Message-ID: <20170306085855.11403-4-quwenruo@cn.fujitsu.com> (raw)
In-Reply-To: <20170306085855.11403-1-quwenruo@cn.fujitsu.com>

Just the same for mount time check, use btrfs_check_rw_degradable() to
check if we are OK to be remounted rw.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
---
 fs/btrfs/super.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index da687dc79cce..1f5772501c92 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -1784,9 +1784,8 @@ static int btrfs_remount(struct super_block *sb, int *flags, char *data)
 			goto restore;
 		}
 
-		if (fs_info->fs_devices->missing_devices >
-		     fs_info->num_tolerated_disk_barrier_failures &&
-		    !(*flags & MS_RDONLY)) {
+		if (!(*flags & MS_RDONLY) &&
+		    !btrfs_check_rw_degradable(fs_info)) {
 			btrfs_warn(fs_info,
 				"too many missing devices, writeable remount is not allowed");
 			ret = -EACCES;
-- 
2.12.0




  parent reply	other threads:[~2017-03-06  9:17 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-06  8:58 [PATCH v2 0/6] Chunk level degradable check Qu Wenruo
2017-03-06  8:58 ` [PATCH v2 1/6] btrfs: Introduce a function to check if all chunks a OK for degraded rw mount Qu Wenruo
2017-03-07  4:48   ` Anand Jain
2017-03-08 18:26     ` Anand Jain
2017-03-09  0:31       ` Qu Wenruo
2017-03-06  8:58 ` [PATCH v2 2/6] btrfs: Do chunk level rw degrade check at mount time Qu Wenruo
2017-03-06  8:58 ` Qu Wenruo [this message]
2017-03-06  8:58 ` [PATCH v2 4/6] btrfs: Allow barrier_all_devices to do chunk level device check Qu Wenruo
2017-03-07  4:48   ` Anand Jain
2017-03-07  5:36     ` Qu Wenruo
2017-03-07  6:55       ` Anand Jain
2017-03-07  7:08         ` Qu Wenruo
2017-03-07  8:07           ` Qu Wenruo
2017-03-06  8:58 ` [PATCH v2 5/6] btrfs: Cleanup num_tolerated_disk_barrier_failures Qu Wenruo
2017-03-06  8:58 ` [PATCH v2 6/6] btrfs: Enhance missing device kernel message Qu Wenruo
2017-03-07  4:47   ` Anand Jain
2017-03-06 18:49 ` [PATCH v2 0/6] Chunk level degradable check Dmitrii Tcvetkov
2017-03-07  0:36 ` Adam Borowski
2017-03-07  1:35   ` Qu Wenruo
2017-03-07  2:23     ` Adam Borowski

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