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>

9 files changed, 25 insertions, 30 deletions

diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index ff71e0b430cd..b74971e19d54 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -1271,7 +1271,7 @@ ssize_t ocfs2_buffered_write_cluster(struct file *file, loff_t pos,
                 i_size_write(inode, pos);
                 mark_inode_dirty(inode);
         }
-        inode->i_blocks = ocfs2_align_bytes_to_sectors((u64)(i_size_read(inode)));
+        inode->i_blocks = ocfs2_inode_sector_count(inode);
         di->i_size = cpu_to_le64((u64)i_size_read(inode));
         inode->i_mtime = inode->i_ctime = CURRENT_TIME;
         di->i_mtime = di->i_ctime = cpu_to_le64(inode->i_mtime.tv_sec);
diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c
index 8d22e1e4a88d..67e6866a2a4f 100644
--- a/fs/ocfs2/dir.c
+++ b/fs/ocfs2/dir.c
@@ -358,7 +358,7 @@ int ocfs2_do_extend_dir(struct super_block *sb,
 {
         int status;
         int extend;
-        u64 p_blkno;
+        u64 p_blkno, v_blkno;
 
         spin_lock(&OCFS2_I(dir)->ip_lock);
         extend = (i_size_read(dir) == ocfs2_clusters_to_bytes(sb, OCFS2_I(dir)->ip_clusters));
@@ -377,9 +377,8 @@ int ocfs2_do_extend_dir(struct super_block *sb,
                 }
         }
 
-        status = ocfs2_extent_map_get_blocks(dir, (dir->i_blocks >>
-                                                   (sb->s_blocksize_bits - 9)),
-                                             &p_blkno, NULL, NULL);
+        v_blkno = ocfs2_blocks_for_bytes(sb, i_size_read(dir));
+        status = ocfs2_extent_map_get_blocks(dir, v_blkno, &p_blkno, NULL, NULL);
         if (status < 0) {
                 mlog_errno(status);
                 goto bail;
@@ -488,7 +487,7 @@ static int ocfs2_extend_dir(struct ocfs2_super *osb,
 
         dir_i_size += dir->i_sb->s_blocksize;
         i_size_write(dir, dir_i_size);
-        dir->i_blocks = ocfs2_align_bytes_to_sectors(dir_i_size);
+        dir->i_blocks = ocfs2_inode_sector_count(dir);
         status = ocfs2_mark_inode_dirty(handle, dir, parent_fe_bh);
         if (status < 0) {
                 mlog_errno(status);
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index 8de6678a340a..43267eea3538 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -1495,8 +1495,7 @@ static void ocfs2_refresh_inode_from_lvb(struct inode *inode)
         if (S_ISLNK(inode->i_mode) && !oi->ip_clusters)
                 inode->i_blocks = 0;
         else
-                inode->i_blocks =
-                        ocfs2_align_bytes_to_sectors(i_size_read(inode));
+                inode->i_blocks = ocfs2_inode_sector_count(inode);
 
         inode->i_uid     = be32_to_cpu(lvb->lvb_iuid);
         inode->i_gid     = be32_to_cpu(lvb->lvb_igid);
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index f516619a3744..e34474c04678 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -216,7 +216,7 @@ int ocfs2_set_inode_size(handle_t *handle,
 
         mlog_entry_void();
         i_size_write(inode, new_i_size);
-        inode->i_blocks = ocfs2_align_bytes_to_sectors(new_i_size);
+        inode->i_blocks = ocfs2_inode_sector_count(inode);
         inode->i_ctime = inode->i_mtime = CURRENT_TIME;
 
         status = ocfs2_mark_inode_dirty(handle, inode, fe_bh);
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index 310049bf7f6b..4bfc98c70137 100644
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -221,6 +221,9 @@ int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
                 goto bail;
         }
 
+        OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
+        OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr);
+
         inode->i_version = 1;
         inode->i_generation = le32_to_cpu(fe->i_generation);
         inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev));
@@ -232,8 +235,7 @@ int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
         if (S_ISLNK(inode->i_mode) && !fe->i_clusters)
                 inode->i_blocks = 0;
         else
-                inode->i_blocks =
-                        ocfs2_align_bytes_to_sectors(le64_to_cpu(fe->i_size));
+                inode->i_blocks = ocfs2_inode_sector_count(inode);
         inode->i_mapping->a_ops = &ocfs2_aops;
         inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime);
         inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec);
@@ -248,9 +250,6 @@ int ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe,
                      (unsigned long long)OCFS2_I(inode)->ip_blkno,
                      (unsigned long long)fe->i_blkno);
 
-        OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
-        OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr);
-
         inode->i_nlink = le16_to_cpu(fe->i_links_count);
 
         if (fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL))
@@ -1243,7 +1242,7 @@ void ocfs2_refresh_inode(struct inode *inode,
         if (S_ISLNK(inode->i_mode) && le32_to_cpu(fe->i_clusters) == 0)
                 inode->i_blocks = 0;
         else
-                inode->i_blocks = ocfs2_align_bytes_to_sectors(i_size_read(inode));
+                inode->i_blocks = ocfs2_inode_sector_count(inode);
         inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime);
         inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec);
         inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime);
diff --git a/fs/ocfs2/inode.h b/fs/ocfs2/inode.h
index a9ced009cb9c..aa84353d0d19 100644
--- a/fs/ocfs2/inode.h
+++ b/fs/ocfs2/inode.h
@@ -138,4 +138,11 @@ int ocfs2_aio_write(struct file *file, struct kiocb *req, struct iocb *iocb);
 
 void ocfs2_set_inode_flags(struct inode *inode);
 
+static inline blkcnt_t ocfs2_inode_sector_count(struct inode *inode)
+{
+        int c_to_s_bits = OCFS2_SB(inode->i_sb)->s_clustersize_bits - 9;
+
+        return (blkcnt_t)(OCFS2_I(inode)->ip_clusters << c_to_s_bits);
+}
+
 #endif /* OCFS2_INODE_H */
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) {
diff --git a/fs/ocfs2/namei.c b/fs/ocfs2/namei.c
index 9bdbe4ae92f8..2bcf353fd7c5 100644
--- a/fs/ocfs2/namei.c
+++ b/fs/ocfs2/namei.c
@@ -285,7 +285,7 @@ static int ocfs2_fill_new_dir(struct ocfs2_super *osb,
 
         i_size_write(inode, inode->i_sb->s_blocksize);
         inode->i_nlink = 2;
-        inode->i_blocks = ocfs2_align_bytes_to_sectors(inode->i_sb->s_blocksize);
+        inode->i_blocks = ocfs2_inode_sector_count(inode);
         status = ocfs2_mark_inode_dirty(handle, inode, fe_bh);
         if (status < 0) {
                 mlog_errno(status);
@@ -1688,7 +1688,7 @@ static int ocfs2_symlink(struct inode *dir,
                         goto bail;
                 }
                 i_size_write(inode, newsize);
-                inode->i_blocks = ocfs2_align_bytes_to_sectors(newsize);
+                inode->i_blocks = ocfs2_inode_sector_count(inode);
         } else {
                 inode->i_op = &ocfs2_fast_symlink_inode_operations;
                 memcpy((char *) fe->id2.i_symlink, symname, l);
diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c
index 6dbb11762759..0da655ae5d6f 100644
--- a/fs/ocfs2/suballoc.c
+++ b/fs/ocfs2/suballoc.c
@@ -381,8 +381,7 @@ static int ocfs2_block_group_alloc(struct ocfs2_super *osb,
                                              le32_to_cpu(fe->i_clusters)));
         spin_unlock(&OCFS2_I(alloc_inode)->ip_lock);
         i_size_write(alloc_inode, le64_to_cpu(fe->i_size));
-        alloc_inode->i_blocks =
-                ocfs2_align_bytes_to_sectors(i_size_read(alloc_inode));
+        alloc_inode->i_blocks = ocfs2_inode_sector_count(alloc_inode);
 
         status = 0;
 bail: