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Date: Thu, 28 Jan 2010 21:13:38 +0530 From: Nitin Gupta <ngupta@...are.org> To: Greg KH <greg@...ah.com> Cc: Pekka Enberg <penberg@...helsinki.fi>, linux-kernel <linux-kernel@...r.kernel.org> Subject: [PATCH 2/7] Flush block device before reset Make sure we flush block device before freeing all metadata during reset ioctl. Signed-off-by: Nitin Gupta <ngupta@...ar.org> --- drivers/staging/ramzswap/ramzswap_drv.c | 11 ++++++++--- 1 files changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/staging/ramzswap/ramzswap_drv.c b/drivers/staging/ramzswap/ramzswap_drv.c index 05273c0..3567ee3 100644 --- a/drivers/staging/ramzswap/ramzswap_drv.c +++ b/drivers/staging/ramzswap/ramzswap_drv.c @@ -1000,6 +1000,9 @@ static void reset_device(struct ramzswap *rzs) unsigned entries_per_page; 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) is_backing_blkdev = 1; @@ -1073,9 +1076,6 @@ static void reset_device(struct ramzswap *rzs) rzs->disksize = 0; rzs->memlimit = 0; - - /* Back to uninitialized state */ - rzs->init_done = 0; } 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; goto out; } + + /* Make sure all pending I/O is finished */ + if (bdev) + fsync_bdev(bdev); + ret = ramzswap_ioctl_reset_device(rzs); break; -- 1.6.2.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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