The patch fixes a silly mistake: when fuse_prepare_write() calls
__fuse_readpage(), the latter will do fuse_wait_on_page_writeback_or_invalidate
anyway, so explicit fuse_wait_on_page_writeback is redundant.
That silly mistake resulted in deadlock because, fuse_prepare_write
used fuse_wait_on_page_
https://jira.sw.ru/browse/PSBM-55105
In bug we crashed in zero_fill_bio when trying to zero memset bio_vec:
struct bio_vec {
bv_page = 0xea0004437500,
bv_len = 4294948864,
bv_offset = 0
}
which is bigger than its bio->bi_size = 104448, guard_bio_eod might
lead to these bv_len overflow
The commit is pushed to "branch-rh7-3.10.0-327.36.1.vz7.20.x-ovz" and will
appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-327.36.1.vz7.20.9
-->
commit 5173f45a28cdf3d5808e236eab882273a760a363
Author: Roman Kagan
Date: Fri Dec 2 18:35:41 2016 +0400
kvm/x86: skip
The commit is pushed to "branch-rh7-3.10.0-327.36.1.vz7.20.x-ovz" and will
appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-327.36.1.vz7.20.9
-->
commit 2b3926333196c731257c173f7be35d4bd8a4
Author: Maxim Patlasov
Date: Fri Dec 2 18:34:57 2016 +0400
fuse: no mt
Maxim Patlasov writes:
> fuse_fsync_common() may skip fuse_flush_mtime() if datasync=1 because
> mtime is pure metadata and the content of file doesn't depend on it.
>
> https://jira.sw.ru/browse/PSBM-55919
>
> Signed-off-by: Maxim Patlasov
ACK.
> ---
> fs/fuse/file.c |4 ++--
> 1 file cha
Async pagefault machinery assumes communication with L1 guests only: all
the state -- MSRs, apf area addresses, etc, -- are for L1. However, it
currently doesn't check if the vCPU is running L1 or L2, and may inject
To reproduce the problem, use a host with swap enabled, run a VM on it,
run a nes
