[PATCH 1/2] kill FMODE_NDELAY_NOW
Update FMODE_NDELAY before each ioctl call so that we can kill the
magic FMODE_NDELAY_NOW. It would be even better to do this directly
in setfl(), but for that we'd need to have FMODE_NDELAY for all files,
not just block special files.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c
index d43e608..67eb93c 100644
--- a/block/compat_ioctl.c
+++ b/block/compat_ioctl.c
@@ -722,8 +722,14 @@
struct backing_dev_info *bdi;
loff_t size;
+ /*
+ * O_NDELAY can be altered using fcntl(.., F_SETFL, ..), so we have
+ * to updated it before every ioctl.
+ */
if (file->f_flags & O_NDELAY)
- mode |= FMODE_NDELAY_NOW;
+ mode |= FMODE_NDELAY;
+ else
+ mode &= ~FMODE_NDELAY;
switch (cmd) {
case HDIO_GETGEO:
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index c9e1242..5081b39 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -757,7 +757,7 @@
* access to the device is prohibited.
*/
error = scsi_nonblockable_ioctl(sdp, cmd, p,
- (mode & FMODE_NDELAY_NOW) != 0);
+ (mode & FMODE_NDELAY) != 0);
if (!scsi_block_when_processing_errors(sdp) || !error)
return error;
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index 62b6633..45b66b9 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -521,7 +521,7 @@
* if it doesn't recognise the ioctl
*/
ret = scsi_nonblockable_ioctl(sdev, cmd, argp,
- (mode & FMODE_NDELAY_NOW) != 0);
+ (mode & FMODE_NDELAY) != 0);
if (ret != -ENODEV)
return ret;
return scsi_ioctl(sdev, cmd, argp);
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 7c72752..99e0ae1 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1206,8 +1206,16 @@
{
struct block_device *bdev = I_BDEV(file->f_mapping->host);
fmode_t mode = file->f_mode;
+
+ /*
+ * O_NDELAY can be altered using fcntl(.., F_SETFL, ..), so we have
+ * to updated it before every ioctl.
+ */
if (file->f_flags & O_NDELAY)
- mode |= FMODE_NDELAY_NOW;
+ mode |= FMODE_NDELAY;
+ else
+ mode &= ~FMODE_NDELAY;
+
return blkdev_ioctl(bdev, mode, cmd, arg);
}
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 0dcdd94..b3345a9 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -79,7 +79,6 @@
#define FMODE_NDELAY ((__force fmode_t)32)
#define FMODE_EXCL ((__force fmode_t)64)
#define FMODE_WRITE_IOCTL ((__force fmode_t)128)
-#define FMODE_NDELAY_NOW ((__force fmode_t)256)
#define RW_MASK 1
#define RWA_MASK 2
