Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/bdev
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/bdev:
[PATCH] fix bogus argument of blkdev_put() in pktcdvd
[PATCH 2/2] documnt FMODE_ constants
[PATCH 1/2] kill FMODE_NDELAY_NOW
[PATCH] clean up blkdev_get a little bit
[PATCH] Fix block dev compat ioctl handling
[PATCH] kill obsolete temporary comment in swsusp_close()
diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c
index 3d3e7a4..67eb93c 100644
--- a/block/compat_ioctl.c
+++ b/block/compat_ioctl.c
@@ -677,6 +677,29 @@
case DVD_WRITE_STRUCT:
case DVD_AUTH:
arg = (unsigned long)compat_ptr(arg);
+ /* These intepret arg as an unsigned long, not as a pointer,
+ * so we must not do compat_ptr() conversion. */
+ case HDIO_SET_MULTCOUNT:
+ case HDIO_SET_UNMASKINTR:
+ case HDIO_SET_KEEPSETTINGS:
+ case HDIO_SET_32BIT:
+ case HDIO_SET_NOWERR:
+ case HDIO_SET_DMA:
+ case HDIO_SET_PIO_MODE:
+ case HDIO_SET_NICE:
+ case HDIO_SET_WCACHE:
+ case HDIO_SET_ACOUSTIC:
+ case HDIO_SET_BUSSTATE:
+ case HDIO_SET_ADDRESS:
+ case CDROMEJECT_SW:
+ case CDROM_SET_OPTIONS:
+ case CDROM_CLEAR_OPTIONS:
+ case CDROM_SELECT_SPEED:
+ case CDROM_SELECT_DISC:
+ case CDROM_MEDIA_CHANGED:
+ case CDROM_DRIVE_STATUS:
+ case CDROM_LOCKDOOR:
+ case CDROM_DEBUG:
break;
default:
/* unknown ioctl number */
@@ -699,8 +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/block/pktcdvd.c b/drivers/block/pktcdvd.c
index f20bf35..edda7b6 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -2790,7 +2790,7 @@
return 0;
out_mem:
- blkdev_put(bdev, FMODE_READ|FMODE_WRITE);
+ blkdev_put(bdev, FMODE_READ | FMODE_NDELAY);
/* This is safe: open() is still holding a reference. */
module_put(THIS_MODULE);
return ret;
@@ -2975,7 +2975,7 @@
pkt_debugfs_dev_remove(pd);
pkt_sysfs_dev_remove(pd);
- blkdev_put(pd->bdev, FMODE_READ|FMODE_WRITE);
+ blkdev_put(pd->bdev, FMODE_READ | FMODE_NDELAY);
remove_proc_entry(pd->name, pkt_proc);
DPRINTK(DRIVER_NAME": writer %s unmapped\n", pd->name);
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 db831ef..99e0ae1 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1135,12 +1135,15 @@
if (res)
return res;
- if (!(filp->f_mode & FMODE_EXCL))
- return 0;
+ if (filp->f_mode & FMODE_EXCL) {
+ res = bd_claim(bdev, filp);
+ if (res)
+ goto out_blkdev_put;
+ }
- if (!(res = bd_claim(bdev, filp)))
- return 0;
+ return 0;
+ out_blkdev_put:
blkdev_put(bdev, filp->f_mode);
return res;
}
@@ -1203,8 +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..4a853ef 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -63,23 +63,24 @@
#define MAY_ACCESS 16
#define MAY_OPEN 32
-#define FMODE_READ ((__force fmode_t)1)
-#define FMODE_WRITE ((__force fmode_t)2)
-
-/* Internal kernel extensions */
-#define FMODE_LSEEK ((__force fmode_t)4)
-#define FMODE_PREAD ((__force fmode_t)8)
-#define FMODE_PWRITE FMODE_PREAD /* These go hand in hand */
-
-/* File is being opened for execution. Primary users of this flag are
- distributed filesystems that can use it to achieve correct ETXTBUSY
- behavior for cross-node execution/opening_for_writing of files */
-#define FMODE_EXEC ((__force fmode_t)16)
-
-#define FMODE_NDELAY ((__force fmode_t)32)
-#define FMODE_EXCL ((__force fmode_t)64)
+/* file is open for reading */
+#define FMODE_READ ((__force fmode_t)1)
+/* file is open for writing */
+#define FMODE_WRITE ((__force fmode_t)2)
+/* file is seekable */
+#define FMODE_LSEEK ((__force fmode_t)4)
+/* file can be accessed using pread/pwrite */
+#define FMODE_PREAD ((__force fmode_t)8)
+#define FMODE_PWRITE FMODE_PREAD /* These go hand in hand */
+/* File is opened for execution with sys_execve / sys_uselib */
+#define FMODE_EXEC ((__force fmode_t)16)
+/* File is opened with O_NDELAY (only set for block devices) */
+#define FMODE_NDELAY ((__force fmode_t)32)
+/* File is opened with O_EXCL (only set for block devices) */
+#define FMODE_EXCL ((__force fmode_t)64)
+/* File is opened using open(.., 3, ..) and is writeable only for ioctls
+ (specialy hack for floppy.c) */
#define FMODE_WRITE_IOCTL ((__force fmode_t)128)
-#define FMODE_NDELAY_NOW ((__force fmode_t)256)
#define RW_MASK 1
#define RWA_MASK 2
diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index b7713b5..6da1435 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -633,7 +633,7 @@
return;
}
- blkdev_put(resume_bdev, mode); /* move up */
+ blkdev_put(resume_bdev, mode);
}
static int swsusp_header_init(void)