fs: move code out of buffer.c
Move invalidate_bdev, block_sync_page into fs/block_dev.c. Export
kill_bdev as well, so brd doesn't have to open code it. Reduce
buffer_head.h requirement accordingly.
Removed a rather large comment from invalidate_bdev, as it looked a bit
obsolete to bother moving. The small comment replacing it says enough.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c
index 8eba86b..386146d 100644
--- a/drivers/block/amiflop.c
+++ b/drivers/block/amiflop.c
@@ -63,7 +63,7 @@
#include <linux/mutex.h>
#include <linux/amifdreg.h>
#include <linux/amifd.h>
-#include <linux/buffer_head.h>
+#include <linux/fs.h>
#include <linux/blkdev.h>
#include <linux/elevator.h>
#include <linux/interrupt.h>
diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index d22119d..ec24643 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -17,7 +17,7 @@
#include <linux/highmem.h>
#include <linux/mutex.h>
#include <linux/radix-tree.h>
-#include <linux/buffer_head.h> /* invalidate_bh_lrus() */
+#include <linux/fs.h>
#include <linux/slab.h>
#include <asm/uaccess.h>
@@ -402,14 +402,13 @@
error = -EBUSY;
if (bdev->bd_openers <= 1) {
/*
- * Invalidate the cache first, so it isn't written
- * back to the device.
+ * Kill the cache first, so it isn't written back to the
+ * device.
*
* Another thread might instantiate more buffercache here,
* but there is not much we can do to close that race.
*/
- invalidate_bh_lrus();
- truncate_inode_pages(bdev->bd_inode->i_mapping, 0);
+ kill_bdev(bdev);
brd_free_pages(brd);
error = 0;
}
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 9955a53..510fb10 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -188,7 +188,6 @@
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/mod_devicetable.h>
-#include <linux/buffer_head.h> /* for invalidate_buffers() */
#include <linux/mutex.h>
#include <linux/io.h>
#include <linux/uaccess.h>
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 1e888c9..f002577 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -69,7 +69,6 @@
#include <linux/freezer.h>
#include <linux/mutex.h>
#include <linux/writeback.h>
-#include <linux/buffer_head.h> /* for invalidate_bdev() */
#include <linux/completion.h>
#include <linux/highmem.h>
#include <linux/kthread.h>
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index f997c27..2118211 100644
--- a/drivers/cdrom/cdrom.c
+++ b/drivers/cdrom/cdrom.c
@@ -267,7 +267,6 @@
#include <linux/module.h>
#include <linux/fs.h>
-#include <linux/buffer_head.h>
#include <linux/major.h>
#include <linux/types.h>
#include <linux/errno.h>
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 4720f68..b89c548 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -14,7 +14,6 @@
#include <linux/moduleparam.h>
#include <linux/blkpg.h>
#include <linux/bio.h>
-#include <linux/buffer_head.h>
#include <linux/mempool.h>
#include <linux/slab.h>
#include <linux/idr.h>
diff --git a/drivers/md/md.c b/drivers/md/md.c
index f47f1f8..5d1b676 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -36,8 +36,7 @@
#include <linux/blkdev.h>
#include <linux/sysctl.h>
#include <linux/seq_file.h>
-#include <linux/mutex.h>
-#include <linux/buffer_head.h> /* for invalidate_bdev */
+#include <linux/fs.h>
#include <linux/poll.h>
#include <linux/ctype.h>
#include <linux/string.h>
diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c
index b78f231..ebeabc7 100644
--- a/drivers/mtd/devices/block2mtd.c
+++ b/drivers/mtd/devices/block2mtd.c
@@ -14,7 +14,6 @@
#include <linux/list.h>
#include <linux/init.h>
#include <linux/mtd/mtd.h>
-#include <linux/buffer_head.h>
#include <linux/mutex.h>
#include <linux/mount.h>
#include <linux/slab.h>
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 65894f0..2de5b60 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -17,7 +17,6 @@
#include <linux/ctype.h>
#include <linux/major.h>
#include <linux/slab.h>
-#include <linux/buffer_head.h>
#include <linux/hdreg.h>
#include <linux/async.h>
#include <linux/mutex.h>
diff --git a/drivers/scsi/scsicam.c b/drivers/scsi/scsicam.c
index 6803b1e..92d24d6 100644
--- a/drivers/scsi/scsicam.c
+++ b/drivers/scsi/scsicam.c
@@ -16,7 +16,6 @@
#include <linux/genhd.h>
#include <linux/kernel.h>
#include <linux/blkdev.h>
-#include <linux/buffer_head.h>
#include <asm/unaligned.h>
#include <scsi/scsicam.h>
diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
index 43db715..7867b7c 100644
--- a/drivers/tty/sysrq.c
+++ b/drivers/tty/sysrq.c
@@ -32,7 +32,6 @@
#include <linux/module.h>
#include <linux/suspend.h>
#include <linux/writeback.h>
-#include <linux/buffer_head.h> /* for fsync_bdev() */
#include <linux/swap.h>
#include <linux/spinlock.h>
#include <linux/vt_kern.h>
@@ -41,6 +40,7 @@
#include <linux/oom.h>
#include <linux/slab.h>
#include <linux/input.h>
+#include <linux/uaccess.h>
#include <asm/ptrace.h>
#include <asm/irq_regs.h>