udf: atomically read inode size

See i_size_read() comments in include/linux/fs.h

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Jan Kara <jack@suse.cz>

2 files changed, 5 insertions, 4 deletions

diff --git a/fs/udf/lowlevel.c b/fs/udf/lowlevel.c
index 6ad5a453af97..5c7ec121990d 100644
--- a/fs/udf/lowlevel.c
+++ b/fs/udf/lowlevel.c
@@ -58,7 +58,7 @@ unsigned long udf_get_last_block(struct super_block *sb)
          */
         if (ioctl_by_bdev(bdev, CDROM_LAST_WRITTEN, (unsigned long) &lblock) ||
             lblock == 0)
-                lblock = bdev->bd_inode->i_size >> sb->s_blocksize_bits;
+                lblock = i_size_read(bdev->bd_inode) >> sb->s_blocksize_bits;
 
         if (lblock)
                 return lblock - 1;
diff --git a/fs/udf/super.c b/fs/udf/super.c
index 9256117ffa27..6b5a1a45a6c1 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -1213,7 +1213,8 @@ static int udf_load_vat(struct super_block *sb, int p_index, int type1_index)
         struct udf_inode_info *vati;
         uint32_t pos;
         struct virtualAllocationTable20 *vat20;
-        sector_t blocks = sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits;
+        sector_t blocks = i_size_read(sb->s_bdev->bd_inode) >>
+                          sb->s_blocksize_bits;
 
         udf_find_vat_block(sb, p_index, type1_index, sbi->s_last_block);
         if (!sbi->s_vat_inode &&
@@ -1803,7 +1804,7 @@ static int udf_check_anchor_block(struct super_block *sb, sector_t block,
 
         if (UDF_QUERY_FLAG(sb, UDF_FLAG_VARCONV) &&
             udf_fixed_to_variable(block) >=
-            sb->s_bdev->bd_inode->i_size >> sb->s_blocksize_bits)
+            i_size_read(sb->s_bdev->bd_inode) >> sb->s_blocksize_bits)
                 return -EAGAIN;
 
         bh = udf_read_tagged(sb, block, block, &ident);
@@ -1865,7 +1866,7 @@ static int udf_scan_anchors(struct super_block *sb, sector_t *lastblock,
                 last[last_count++] = *lastblock - 152;
 
         for (i = 0; i < last_count; i++) {
-                if (last[i] >= sb->s_bdev->bd_inode->i_size >>
+                if (last[i] >= i_size_read(sb->s_bdev->bd_inode) >>
                                 sb->s_blocksize_bits)
                         continue;
                 ret = udf_check_anchor_block(sb, last[i], fileset);