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Old 07-20-2012, 06:05 PM
Bob Peterson
 
Default GFS2: Eliminate 64-bit divides

Hi,

This patch removes the 64-bit divides introduced in the previous patch
in favor of shifting, so that it will compile properly on 32-bit machines.

Regards,

Bob Peterson
Red Hat File Systems

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
---
commit 050bf58948473a5c83e22f3db046f52a9ffa4cce
Author: Bob Peterson <rpeterso@redhat.com>
Date: Fri Jul 20 12:59:43 2012 -0500

GFS2: Eliminate 64-bit divides

This patch removes the 64-bit divides in favor of shifting, so that
it will compile properly on 32-bit machines.
---
fs/gfs2/file.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 9f94832..9aa6af1 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -384,7 +384,7 @@ static int gfs2_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
return ret;

atomic_set(&ip->i_res->rs_sizehint,
- PAGE_CACHE_SIZE / sdp->sd_sb.sb_bsize);
+ PAGE_CACHE_SIZE >> sdp->sd_sb.sb_bsize_shift);

gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
ret = gfs2_glock_nq(&gh);
@@ -669,7 +669,7 @@ static ssize_t gfs2_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
if (ret)
return ret;

- atomic_set(&ip->i_res->rs_sizehint, writesize / sdp->sd_sb.sb_bsize);
+ atomic_set(&ip->i_res->rs_sizehint, writesize >> sdp->sd_sb.sb_bsize_shift);
if (file->f_flags & O_APPEND) {
struct gfs2_holder gh;

@@ -795,7 +795,7 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset,
if (unlikely(error))
goto out_uninit;

- atomic_set(&ip->i_res->rs_sizehint, len / sdp->sd_sb.sb_bsize);
+ atomic_set(&ip->i_res->rs_sizehint, len >> sdp->sd_sb.sb_bsize_shift);

while (len > 0) {
if (len < bytes)
 

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