zram: don't retry compress incompressible page

It doesn't make sense for us to retry to compress an uncompressible page
(comp_len == PAGE_SIZE) in zsmalloc slowpath, because we will be storing
it uncompressed anyway.  We can avoid wasting time on another compression
attempt.  It is enough to take lock (zcomp_stream_get) and execute the
code below.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Alexey Romanov <[email protected]>
Signed-off-by: Dmitry Rokosov <[email protected]>
Reviewed-by: Sergey Senozhatsky <[email protected]>
Cc: Alexey Romanov <[email protected]>
Cc: Dmitry Rokosov <[email protected]>
Cc: Minchan Kim <[email protected]>
Cc: Nitin Gupta <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions