Devices opened through replace/add would have FMODE_WRITE | FMODE_EXCL,
as compared with devices opened through the mount which will have
FMODE_READ | FMODE_WRITE | FMODE_EXCL. So maintain consistency.

Signed-off-by: Anand Jain <anand.j...@oracle.com>
---
 fs/btrfs/volumes.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 765c2bd2d8d9..7008b5d104d4 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -2323,7 +2323,7 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, 
const char *device_path
        u64 tmp;
        int seeding_dev = 0;
        int ret = 0;
-       fmode_t flag = FMODE_WRITE | FMODE_EXCL;
+       fmode_t flag = FMODE_READ | FMODE_WRITE | FMODE_EXCL;
 
        if (sb_rdonly(sb) && !fs_info->fs_devices->seeding)
                return -EROFS;
@@ -2526,7 +2526,7 @@ int btrfs_init_dev_replace_tgtdev(struct btrfs_fs_info 
*fs_info,
        struct rcu_string *name;
        u64 devid = BTRFS_DEV_REPLACE_DEVID;
        int ret = 0;
-       fmode_t flags = FMODE_WRITE | FMODE_EXCL;
+       fmode_t flags = FMODE_READ | FMODE_WRITE | FMODE_EXCL;
 
        *device_out = NULL;
        if (fs_info->fs_devices->seeding) {
-- 
2.13.1

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