ocfs2: Fix up i_blocks calculation to know about holes

Older file systems which didn't support holes did a dumb calculation of
i_blocks based on i_size. This is no longer accurate, so fix things up to
take actual allocation into account.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

1 files changed, 3 insertions, 11 deletions

diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c
index 12d2340eee29..5a8a90d1c787 100644
--- a/fs/ocfs2/journal.c
+++ b/fs/ocfs2/journal.c
@@ -650,25 +650,17 @@ static int ocfs2_force_read_journal(struct inode *inode)
 {
         int status = 0;
         int i;
-        u64 v_blkno, p_blkno, p_blocks;
+        u64 v_blkno, p_blkno, p_blocks, num_blocks;
 #define CONCURRENT_JOURNAL_FILL 32ULL
         struct buffer_head *bhs[CONCURRENT_JOURNAL_FILL];
 
         mlog_entry_void();
 
-        BUG_ON(inode->i_blocks !=
-                     ocfs2_align_bytes_to_sectors(i_size_read(inode)));
-
         memset(bhs, 0, sizeof(struct buffer_head *) * CONCURRENT_JOURNAL_FILL);
 
-        mlog(0, "Force reading %llu blocks\n",
-                (unsigned long long)(inode->i_blocks >>
-                        (inode->i_sb->s_blocksize_bits - 9)));
-
+        num_blocks = ocfs2_blocks_for_bytes(inode->i_sb, inode->i_size);
         v_blkno = 0;
-        while (v_blkno <
-               (inode->i_blocks >> (inode->i_sb->s_blocksize_bits - 9))) {
-
+        while (v_blkno < num_blocks) {
                 status = ocfs2_extent_map_get_blocks(inode, v_blkno,
                                                      &p_blkno, &p_blocks, NULL);
                 if (status < 0) {