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Subject[PATCH] Loopback mounts should update the mtime of the underlying file on writes
Noticed by a Mercurial user. I think this should fix it.

Signed-off-by: Matt Mackall <mpm@selenic.com>

Index: l/drivers/block/loop.c
===================================================================
--- l.orig/drivers/block/loop.c 2007-11-05 17:50:07.000000000 -0600
+++ l/drivers/block/loop.c 2007-11-05 19:03:51.000000000 -0600
@@ -221,6 +221,7 @@ static int do_lo_send_aops(struct loop_d
offset = pos & ((pgoff_t)PAGE_CACHE_SIZE - 1);
bv_offs = bvec->bv_offset;
len = bvec->bv_len;
+ file_update_time(file);
while (len > 0) {
sector_t IV;
unsigned size;
@@ -299,6 +300,7 @@ static int __do_lo_send_write(struct fil

set_fs(get_ds());
bw = file->f_op->write(file, buf, len, &pos);
+ file_update_time(file);
set_fs(old_fs);
if (likely(bw == len))
return 0;

--
Mathematics is the supreme nostalgia of our time.
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