LU-4856 misc: Reduce exposure to overflow on page counters.

[fs/lustre-release.git] / lustre / llite / rw.c

diff --git a/lustre/llite/rw.c b/lustre/llite/rw.c
index 3897b2d..ff25525 100644 (file)
--- a/lustre/llite/rw.c
+++ b/lustre/llite/rw.c
@@ -101,7 +101,8 @@ static unsigned long ll_ra_count_get(struct ll_sb_info *sbi,
         /* If read-ahead pages left are less than 1M, do not do read-ahead,
          * otherwise it will form small read RPC(< 1M), which hurt server
          * performance a lot. */
-       ret = min(ra->ra_max_pages - atomic_read(&ra->ra_cur_pages), pages);
+       ret = min(ra->ra_max_pages - atomic_read(&ra->ra_cur_pages),
+                 pages);
         if (ret < 0 || ret < min_t(long, PTLRPC_MAX_BRW_PAGES, pages))
                 GOTO(out, ret = 0);