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authorTom Rini <trini@ti.com>2014-11-24 11:50:46 -0500
committerTom Rini <trini@ti.com>2014-12-01 15:21:57 -0500
commit9e374e7b729dc9f68be89cd3e3b1d4d48c768ecf (patch)
tree159d3795f8fd20087fa4123a26c3e2efdde02121 /fs/ext4/ext4fs.c
parente17e998d7fee2e7d381b7bff21aca3714387d5d7 (diff)
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fs/ext4/ext4fs.c, fs/fs.c fs/fat/fat_write.c: Adjust 64bit math methods
The changes to introduce loff_t into filesize means that we need to do 64bit math on 32bit platforms. Make sure we use the right wrappers for these operations. Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Cc: Suriyan Ramasami <suriyan.r@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Rini <trini@ti.com> Tested-by: Pierre Aubert <p.aubert@staubli.com>
Diffstat (limited to 'fs/ext4/ext4fs.c')
-rw-r--r--fs/ext4/ext4fs.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/fs/ext4/ext4fs.c b/fs/ext4/ext4fs.c
index 943b5bcf35..258b93791b 100644
--- a/fs/ext4/ext4fs.c
+++ b/fs/ext4/ext4fs.c
@@ -25,6 +25,7 @@
#include <ext_common.h>
#include <ext4fs.h>
#include "ext4_common.h"
+#include <div64.h>
int ext4fs_symlinknest;
struct ext_filesystem ext_fs;
@@ -67,11 +68,11 @@ int ext4fs_read_file(struct ext2fs_node *node, loff_t pos,
if (len > filesize)
len = filesize;
- blockcnt = ((len + pos) + blocksize - 1) / blocksize;
+ blockcnt = lldiv(((len + pos) + blocksize - 1), blocksize);
- for (i = pos / blocksize; i < blockcnt; i++) {
+ for (i = lldiv(pos, blocksize); i < blockcnt; i++) {
lbaint_t blknr;
- int blockoff = pos % blocksize;
+ int blockoff = pos - (blocksize * i);
int blockend = blocksize;
int skipfirst = 0;
blknr = read_allocated_block(&(node->inode), i);
@@ -82,7 +83,7 @@ int ext4fs_read_file(struct ext2fs_node *node, loff_t pos,
/* Last block. */
if (i == blockcnt - 1) {
- blockend = (len + pos) % blocksize;
+ blockend = (len + pos) - (blocksize * i);
/* The last portion is exactly blocksize. */
if (!blockend)
@@ -90,7 +91,7 @@ int ext4fs_read_file(struct ext2fs_node *node, loff_t pos,
}
/* First block. */
- if (i == pos / blocksize) {
+ if (i == lldiv(pos, blocksize)) {
skipfirst = blockoff;
blockend -= skipfirst;
}
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