GFS2: Streamline alloc calculations for writes

This patch removes some unused code, and make the calculation
of the number of blocks required conditional in order to reduce
the number of times this (potentially expensive) calculation
is done.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/gfs2/ops_file.c b/fs/gfs2/ops_file.c
index a6b7a733fd4d..289c5f54ba53 100644
--- a/fs/gfs2/ops_file.c
+++ b/fs/gfs2/ops_file.c
@@ -355,7 +355,6 @@ static int gfs2_page_mkwrite(struct vm_area_struct *vma, struct page *page)
                 goto out;
 
         set_bit(GIF_SW_PAGED, &ip->i_flags);
-        gfs2_write_calc_reserv(ip, PAGE_CACHE_SIZE, &data_blocks, &ind_blocks);
         ret = gfs2_write_alloc_required(ip, pos, PAGE_CACHE_SIZE, &alloc_required);
         if (ret || !alloc_required)
                 goto out_unlock;
@@ -367,6 +366,7 @@ static int gfs2_page_mkwrite(struct vm_area_struct *vma, struct page *page)
         ret = gfs2_quota_lock_check(ip);
         if (ret)
                 goto out_alloc_put;
+        gfs2_write_calc_reserv(ip, PAGE_CACHE_SIZE, &data_blocks, &ind_blocks);
         al->al_requested = data_blocks + ind_blocks;
         ret = gfs2_inplace_reserve(ip);
         if (ret)