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From: Nikanth Karthikesan on 8 Apr 2010 06:30
Update mtime when writing to backing filesystem using the address space
operations write_begin and write_end.

Signed-off-by: Nikanth Karthikesan <knikanth(a)suse.de>

---

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index cb69929..8546d12 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -237,6 +237,8 @@ static int do_lo_send_aops(struct loop_device *lo, struct bio_vec *bvec,
if (ret)
goto fail;

+ file_update_time(file);
+
transfer_result = lo_do_transfer(lo, WRITE, page, offset,
bvec->bv_page, bv_offs, size, IV);
copied = size;
--
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