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| author | Peter Lieven <pl@kamp.de> | 2015-01-05 12:29:49 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2015-01-13 13:43:29 +0000 |
| commit | 095e4fa4b56cf511cb41005872eeace9a2f24582 (patch) | |
| tree | 929757fee681f1d76a0b744238c88d5900e9144d /blockdev.c | |
| parent | 51a2219bdceed16e81c6e2e2f08aed39c579728f (diff) | |
| download | hqemu-095e4fa4b56cf511cb41005872eeace9a2f24582.zip hqemu-095e4fa4b56cf511cb41005872eeace9a2f24582.tar.gz | |
block: limited request size in write zeroes unsupported path
If bs->bl.max_write_zeroes is large and we end up in the unsupported
path we might allocate a lot of memory for the iovector and/or even
generate an oversized requests.
Fix this by limiting the request by the minimum of the reported
maximum transfer size or 16MB (32768 sectors).
Reported-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: Peter Lieven <pl@kamp.de>
Reviewed-by: Denis V. Lunev <den@openvz.org>
Message-id: 1420457389-16332-1-git-send-email-pl@kamp.de
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'blockdev.c')
0 files changed, 0 insertions, 0 deletions
