qubes-linux-kernel/patches.fixes/novfs-incorrect-filesize-fix
2010-07-07 13:12:45 +02:00

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From: Sankar P <psankar@novell.com>
Subject: novfs: novfs reports incorrect file size
Patch-mainline: no
References: bnc#426536
While updating the inode, make sure that the s_blocks member
is updated to the number of 512 blocks units.
This fixes the issue of novfs reporting invalid file sizes.
Signed-off-by: Sankar P <psankar@novell.com>
Acked-by: Jan Kara <jack@suse.cz>
---
fs/novfs/inode.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
--- a/fs/novfs/inode.c
+++ b/fs/novfs/inode.c
@@ -2671,8 +2671,17 @@ void update_inode(struct inode *Inode, s
Inode->i_mtime = Info->mtime;
if (Inode->i_size && Inode->i_sb->s_blocksize) {
- Inode->i_blocks =
- (unsigned long) (Info->size >> (loff_t) Inode->i_blkbits);
+
+ /*
+ * Filling number of blocks as in NSS filesystem.
+ * The s_blocksize is initialized to PAGE_CACHE_SIZE in
+ * the super block initialization.
+ *
+ * Update i_blocks to have the number of 512 blocks
+ */
+ Inode->i_blocks = (((loff_t)Info->size) + Inode->i_sb->s_blocksize - 1)
+ >> (loff_t)Inode->i_blkbits;
+ Inode->i_blocks = Inode->i_blocks << (PAGE_CACHE_SHIFT - 9);
Inode->i_bytes = Info->size & (Inode->i_sb->s_blocksize - 1);
DbgPrint("i_sb->s_blocksize=%d", Inode->i_sb->s_blocksize);