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Wed, 17 Jun 2020 08:40:43 +0000 (GMT) From: "Namjae Jeon" To: "'Sungjong Seo'" , "'Hyunchul Lee'" Cc: , In-Reply-To: <42fb01d6447e$c372d860$4a588920$@samsung.com> Subject: RE: [PATCH v2] exfat: call sync_filesystem for read-only remount Date: Wed, 17 Jun 2020 17:40:43 +0900 Message-ID: <001e01d64482$fd03cbd0$f70b6370$@samsung.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 16.0 Thread-Index: AQJvI9IWjSo26kFx55d3RL5JRBWksAG87Uq/ArpcdCinhwPs8A== Content-Language: ko X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrDKsWRmVeSWpSXmKPExsWy7bCmni7P9ZdxBl/+i1hcu/+e3WLP3pMs Fpd3zWGz2PLvCKsDi8fOWXfZPfq2rGL0+LxJLoA5KscmIzUxJbVIITUvOT8lMy/dVsk7ON45 3tTMwFDX0NLCXEkhLzE31VbJxSdA1y0zB2ibkkJZYk4pUCggsbhYSd/Opii/tCRVISO/uMRW KbUgJafA0KBArzgxt7g0L10vOT/XytDAwMgUqDIhJ+PI43msBedYKg4fPMXSwHiVuYuRk0NC wETi2oFJLF2MXBxCAjsYJeaua2QHSQgJfGKUaPjEBpH4xijRufw7I0zH1obpLBBFexklzi9P gyh6yShxeuZ6JpAEm4CuxL8/+9lAbBGBUImTV5eBTWUWcJY4fOMU2GpOASuJKQufAw3i4BAW 8JT48SEGJMwioCrxcvtKVhCbV8BSYl/Ld2YIW1Di5MwnLBBj5CW2v50D9YGCxM+ny1ghVjlJ LNx1mgmiRkRidmcbM8htEgIf2SUun2tgh2hwkfh5pYsFwhaWeHV8C1RcSuJlfxs7yD0SAtUS H/dDze9glHjx3RbCNpa4uX4DK0gJs4CmxPpd+hBhRYmdv+cyQqzlk3j3tYcVYgqvREebEESJ qkTfpcNMELa0RFf7B/YJjEqzkDw2C8ljs5A8MAth2QJGllWMYqkFxbnpqcWGBcbIMb2JEZwM tcx3ME57+0HvECMTB+MhRgkOZiURXuffL+KEeFMSK6tSi/Lji0pzUosPMZoCg3ois5Rocj4w HeeVxBuaGhkbG1uYmJmbmRorifP6Wl2IExJITyxJzU5NLUgtgulj4uCUamDisvPwLdryJfbT tut9dmVyczfIbnI93aGk+m0hq9vumgX8Jl0u9qdsNFQzFpvVdXDka7IsiY1Z33ytTF4gds0L /fWFnz9tPzi3bd6ZP2wFyned1hytOc7byfR9Q39yaezJ3qp3zMfatxaclnkQsWZha/nB8oJz ZsVBLqmGKzILueTNdESZ1L68nV37LuFAlv/J+Ye+3xZnLHdQNJG5t/uPw+qA7SuXMRrLhFkk 9539mJB8WpLzZezzUrtJzz6fO1enVKoxJ0j4oU16wh976/17rjeI9J05wjPn4tkD7PvOpc3h P7iCfd7+OdYve7ZmdN42EN3U7TgzZum0Zu7zscEV8jJHP7NMX1W6PuHrbUYlluKMREMt5qLi RADn6fyMDwQAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrJLMWRmVeSWpSXmKPExsWy7bCSvC739ZdxBveOq1hcu/+e3WLP3pMs Fpd3zWGz2PLvCKsDi8fOWXfZPfq2rGL0+LxJLoA5issmJTUnsyy1SN8ugSvjyON5rAXnWCoO HzzF0sB4lbmLkZNDQsBEYmvDdJYuRi4OIYHdjBIfZq1ig0hISxw7cQaoiAPIFpY4fLgYouY5 o8Suk5NZQGrYBHQl/v3ZD1YvIhAq0dp1DCzOLOAqMf/5ajaIhm2MErNOPmcCSXAKWElMWfic BWSosICnxI8PMSBhFgFViZfbV7KC2LwClhL7Wr4zQ9iCEidnPoGaqS3R+7CVEcKWl9j+dg7U AwoSP58uY4W4wUli4a7TTBA1IhKzO9uYJzAKz0IyahaSUbOQjJqFpGUBI8sqRsnUguLc9Nxi wwLDvNRyveLE3OLSvHS95PzcTYzg2NDS3MG4fdUHvUOMTByMhxglOJiVRHidf7+IE+JNSays Si3Kjy8qzUktPsQozcGiJM57o3BhnJBAemJJanZqakFqEUyWiYNTqoEpZvnLZ2XvzVi+PGAw NZwcVrbrWVtNrpONrsSHOxflDA2DNCZez2v8fCb6fp7Y+sJTHHM3f55wVrvQp4hL35836qmA ovfklL+FrBz6B9jZ3aeL+ud0HClr62cJfqGzQGLdtQNvF2wXs+oWWcNV7mTtne1ou3mTWWrO x8uLA734Lv6ycT7IzxY+ZbVeV+5Jm706zt+XTXDv9zu6+rJ62vuthfJbThyunrN18vPbDSdy Hfw3Tvi2LDZtxzZn17VN/nqlz8I2vnS0dfi9cK0J865nCZGTPF9kXwnjPJegI+1kdnfanEqh wiDbPTu3Tfh0LGoKo1dfc85HD8dLNi6sL9f8MY+4VnrK9uamLwtyJigosRRnJBpqMRcVJwIA b4fvbPwCAAA= X-CMS-MailID: 20200617084043epcas1p15b9a0ede7d9e129af942799f3f54de00 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-Sendblock-Type: SVC_REQ_APPROVE CMS-TYPE: 101P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20200616053459epcas1p4e7a4908eda3785d6f5cbb71150cbe50b References: <20200616053445.18125-1-hyc.lee@gmail.com> <42fb01d6447e$c372d860$4a588920$@samsung.com> Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org > > We need to commit dirty metadata and pages to disk before remounting > > exfat as read-only. > > > > This fixes a failure in xfstests generic/452 > > > > generic/452 does the following: > > cp something / > > mount -o remount,ro > > > > the /something is corrupted. because while exfat is remounted > > as read-only, exfat doesn't have a chance to commit metadata and vfs > > invalidates page caches in a block device. > > > > Signed-off-by: Hyunchul Lee > > Acked-by: Sungjong Seo Applied. Thanks!