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Diffstat (limited to 'fs/direct-io.c')
-rw-r--r--fs/direct-io.c11
1 files changed, 4 insertions, 7 deletions
diff --git a/fs/direct-io.c b/fs/direct-io.c
index d740ab67ff6e..389863f59cda 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -580,9 +580,8 @@ static int get_more_blocks(struct dio *dio, struct dio_submit *sdio,
{
int ret;
sector_t fs_startblk; /* Into file, in filesystem-sized blocks */
+ sector_t fs_endblk; /* Into file, in filesystem-sized blocks */
unsigned long fs_count; /* Number of filesystem-sized blocks */
- unsigned long dio_count;/* Number of dio_block-sized blocks */
- unsigned long blkmask;
int create;
/*
@@ -593,11 +592,9 @@ static int get_more_blocks(struct dio *dio, struct dio_submit *sdio,
if (ret == 0) {
BUG_ON(sdio->block_in_file >= sdio->final_block_in_request);
fs_startblk = sdio->block_in_file >> sdio->blkfactor;
- dio_count = sdio->final_block_in_request - sdio->block_in_file;
- fs_count = dio_count >> sdio->blkfactor;
- blkmask = (1 << sdio->blkfactor) - 1;
- if (dio_count & blkmask)
- fs_count++;
+ fs_endblk = (sdio->final_block_in_request - 1) >>
+ sdio->blkfactor;
+ fs_count = fs_endblk - fs_startblk + 1;
map_bh->b_state = 0;
map_bh->b_size = fs_count << dio->inode->i_blkbits;