redonkable/alistair23-linux
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Staging: ramzswap: Flush block device before reset

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Make sure we flush block device before freeing all metadata
during reset ioctl.

Signed-off-by: Nitin Gupta <ngupta@vflar.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Nitin Gupta 2010-01-28 21:13:38 +05:30 committed by Greg Kroah-Hartman
parent 6a90772886
commit 7eef753390
1 changed files with 8 additions and 3 deletions
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11
drivers/staging/ramzswap/ramzswap_drv.c
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@ -1000,6 +1000,9 @@ static void reset_device(struct ramzswap *rzs)
unsigned entries_per_page; unsigned entries_per_page;
unsigned long num_table_pages, entry = 0; unsigned long num_table_pages, entry = 0;
/* Do not accept any new I/O request */
rzs->init_done = 0;
if (rzs->backing_swap && !rzs->num_extents) if (rzs->backing_swap && !rzs->num_extents)
is_backing_blkdev = 1; is_backing_blkdev = 1;
@ -1073,9 +1076,6 @@ static void reset_device(struct ramzswap *rzs)
rzs->disksize = 0; rzs->disksize = 0;
rzs->memlimit = 0; rzs->memlimit = 0;
/* Back to uninitialized state */
rzs->init_done = 0;
} }
static int ramzswap_ioctl_init_device(struct ramzswap *rzs) static int ramzswap_ioctl_init_device(struct ramzswap *rzs)
@ -1276,6 +1276,11 @@ static int ramzswap_ioctl(struct block_device *bdev, fmode_t mode,
ret = -EBUSY; ret = -EBUSY;
goto out; goto out;
} }
/* Make sure all pending I/O is finished */
if (bdev)
fsync_bdev(bdev);
ret = ramzswap_ioctl_reset_device(rzs); ret = ramzswap_ioctl_reset_device(rzs);
break; break;