[PATCH 05/31] cdrom: track if a cdrom_device_info was opened for data

Christoph Hellwig
2023-06-06T07:40:52Z

Set a flag when a cdrom_device_info is opened for writing, instead of
trying to figure out this at release time. This will allow to eventually
remove the mode argument to the ->release block_device_operation as
nothing but the CDROM drivers uses that argument.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/cdrom/cdrom.c | 12 +++++-------
include/linux/cdrom.h | 1 +
2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index 08abf1ffede002..adebac1bd210d9 100644
--- a/drivers/cdrom/cdrom.c
+++ b/drivers/cdrom/cdrom.c
@@ -1172,6 +1172,7 @@ int cdrom_open(struct cdrom_device_info *cdi, fmode_t mode)
ret = 0;
cdi->media_written = 0;
}
+ cdi->opened_for_data = true;
}

if (ret)
@@ -1252,7 +1253,6 @@ static int check_for_audio_disc(struct cdrom_device_info *cdi,
void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode)
{
const struct cdrom_device_ops *cdo = cdi->ops;
- int opened_for_data;

cd_dbg(CD_CLOSE, "entering cdrom_release\n");

@@ -1270,14 +1270,12 @@ void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode)
}
}

- opened_for_data = !(cdi->options & CDO_USE_FFLAGS) ||
- !(mode & FMODE_NDELAY);
-
cdo->release(cdi);
- if (cdi->use_count == 0) { /* last process that closes dev*/
- if (opened_for_data &&
- cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY))
+
+ if (cdi->use_count == 0 && cdi->opened_for_data) {
+ if (cdi->options & CDO_AUTO_EJECT && CDROM_CAN(CDC_OPEN_TRAY))
cdo->tray_move(cdi, 1);
+ cdi->opened_for_data = false;
}
}
EXPORT_SYMBOL(cdrom_release);
diff --git a/include/linux/cdrom.h b/include/linux/cdrom.h
index 0a5db0b0c958a1..385e94732b2cf1 100644
--- a/include/linux/cdrom.h
+++ b/include/linux/cdrom.h
@@ -64,6 +64,7 @@ struct cdrom_device_info {
int (*exit)(struct cdrom_device_info *);
int mrw_mode_page;
__s64 last_media_change_ms;
+ bool opened_for_data;
};

struct cdrom_device_ops {
--
2.39.2