linux-toradex.git/drivers/block/xen-blkback, branch v3.0.65

xen/blkback: Report VBD_WSECT (wr_sect) properly.

2011-11-11T17:37:07+00:00

commit 5c62cb48602dba95159c81ffeca179d3852e25be upstream.

We did not increment the amount of sectors written to disk
b/c we tested for the == WRITE which is incorrect - as the
operations are more of WRITE_FLUSH, WRITE_ODIRECT. This patch
fixes it by doing a & WRITE check.

Reported-by: Andy Burns 
Suggested-by: Ian Campbell 
Signed-off-by: Konrad Rzeszutek Wilk 
Signed-off-by: Greg Kroah-Hartman

xen/blkback: potential null dereference in error handling

2011-06-01T13:28:21+00:00

blkbk->pending_pages can be NULL here so I added a check for it.

Signed-off-by: Dan Carpenter 
[v1: Redid the loop a bit]
Signed-off-by: Konrad Rzeszutek Wilk

xen/blkback: don't call vbd_size() if bd_disk is NULL

2011-06-01T13:28:20+00:00

...because vbd_size() dereferences bd_disk if bd_part is NULL.

Signed-off-by: Laszlo Ersek
Signed-off-by: Konrad Rzeszutek Wilk

xen/blkback: don't fail empty barrier requests

2011-05-18T15:28:16+00:00

The sector number on empty barrier requests may (will?) be -1, which,
given that it's being treated as unsigned 64-bit quantity, will almost
always exceed the actual (virtual) disk's size.

Inspired by Konrad's "When writting barriers set the sector number to
zero...".

While at it also add overflow checking to the math in vbd_translate().

Signed-off-by: Jan Beulich 
Signed-off-by: Konrad Rzeszutek Wilk

xen/blkback: fix xenbus_transaction_start() hang caused by double xenbus_transaction_end()

2011-05-13T13:45:40+00:00

vbd_resize() up_read()'s xs_state.suspend_mutex twice in a row via double
xenbus_transaction_end() calls. The next down_read() in
xenbus_transaction_start() (at eg. the next resize attempt) hangs.

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=618317

Acked-by: Jan Beulich 
Acked-by: Ian Campbell 
Signed-off-by: Laszlo Ersek 
Signed-off-by: Konrad Rzeszutek Wilk

xen/blkback: Align the tabs on the structure.

2011-05-12T22:02:28+00:00

The recent changes caused this field of the structure to be offset a bit.

Signed-off-by: Konrad Rzeszutek Wilk

xen/blkback: if log_stats is enabled print out the data.

2011-05-12T21:55:54+00:00

And not depend on the driver being built with -DDEBUG flag.
Signed-off-by: Konrad Rzeszutek Wilk

xen/blkback: Add the prefix XEN in the common.h.

2011-05-12T21:55:53+00:00

Signed-off-by: Konrad Rzeszutek Wilk

xen/blkback: Prefix 'vbd' with 'xen' in structs and functions.

2011-05-12T21:55:52+00:00

Signed-off-by: Konrad Rzeszutek Wilk

xen/blkback: Change structure name blkif_st to xen_blkif.

2011-05-12T21:55:51+00:00

No need for that '_st' and xen_blkif is more apt.

Signed-off-by: Konrad Rzeszutek Wilk