The patch titled
xen/xenfs: fix xenbus message reads
has been added to the -mm tree. Its filename is
xen-add-xenfs-to-allow-usermode-xen-interaction-fix-xenbus-message-reads.patch
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------------------------------------------------------
Subject: xen/xenfs: fix xenbus message reads
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Compute the remaining data size properly.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>
Cc: Alex Zeffertt <alex.zeffertt@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/xen/xenfs/xenbus.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN drivers/xen/xenfs/xenbus.c~xen-add-xenfs-to-allow-usermode-xen-interaction-fix-xenbus-message-reads drivers/xen/xenfs/xenbus.c
--- a/drivers/xen/xenfs/xenbus.c~xen-add-xenfs-to-allow-usermode-xen-interaction-fix-xenbus-message-reads
+++ a/drivers/xen/xenfs/xenbus.c
@@ -132,7 +132,7 @@ static ssize_t xenbus_file_read(struct f
rb = list_entry(u->read_buffers.next, struct read_buffer, list);
i = 0;
while (i < len) {
- unsigned sz = min((unsigned)len - i, rb->cons - rb->len);
+ unsigned sz = min((unsigned)len - i, rb->len - rb->cons);
ret = copy_to_user(ubuf + i, &rb->msg[rb->cons], sz);
_
Patches currently in -mm which might be from jeremy@xxxxxxxx are
linux-next.patch
mm-apply_to_range-call-pte-function-with-lazy-updates.patch
drivers-xen-xenbus-xenbus_clientc-cleanup-kerneldoc.patch
xen-add-xenfs-to-allow-usermode-xen-interaction-fix-xenbus-message-reads.patch
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