LU-13386 llite: allow current readahead to exceed reservation

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

diff --git a/lustre/llite/rw.c b/lustre/llite/rw.c
index 6161bdc..b6559b4 100644 (file)
--- a/lustre/llite/rw.c
+++ b/lustre/llite/rw.c
@@ -729,9 +729,12 @@ static int ll_readahead(const struct lu_env *env, struct cl_io *io,
 
        /* at least to extend the readahead window to cover current read */
        if (!hit && vio->vui_ra_valid &&
-           vio->vui_ra_start_idx + vio->vui_ra_pages > ria->ria_start_idx)
+           vio->vui_ra_start_idx + vio->vui_ra_pages > ria->ria_start_idx) {
                ria->ria_end_idx_min =
                        vio->vui_ra_start_idx + vio->vui_ra_pages - 1;
+               pages_min = vio->vui_ra_start_idx + vio->vui_ra_pages -
+                               ria->ria_start_idx;
+       }
 
        ria->ria_reserved = ll_ra_count_get(ll_i2sbi(inode), ria, pages,
                                            pages_min);