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authorWei Yang <richardw.yang@linux.intel.com>2019-09-11 13:28:39 +0000
committerDr. David Alan Gilbert <dgilbert@redhat.com>2019-09-12 11:23:32 +0100
commit1bf57fb3df9615b50219c50b381cc52e303f682c (patch)
treeac3d66c60d945acf42e15580f70fdcae5f750b2d /qemu-img.texi
parent89fe04b4585c97fda7c173bee97bbacb32f64e80 (diff)
migration/qemu-file: fix potential buf waste for extra buf_index adjustment
In add_to_iovec(), qemu_fflush() will be called if iovec is full. If this happens, buf_index is reset. Currently, this is not checked and buf_index would always been adjust with buf size. This is not harmful, but will waste some space in file buffer. This patch make add_to_iovec() return 1 when it has flushed the file. Then the caller could check the return value to see whether it is necessary to adjust the buf_index any more. Signed-off-by: Wei Yang <richardw.yang@linux.intel.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20190911132839.23336-3-richard.weiyang@gmail.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Diffstat (limited to 'qemu-img.texi')
0 files changed, 0 insertions, 0 deletions