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[PATCH] reiserfs: fix 32-bit overflow in map_block_for_writepage()

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I now see another overflow in reiserfs that should lead to data corruptions
with files that are bigger than 4G under certain circumstances when using
mmap.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Oleg Drokin
2005-11-28 13:43:53 -08:00
committed by Linus Torvalds
parent 1a9c3f78a3
commit 7729ac5efe
1 changed files with 1 additions and 1 deletions
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fs/reiserfs/inode.c
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@@ -2194,7 +2194,7 @@ static int map_block_for_writepage(struct inode *inode,
INITIALIZE_PATH(path); INITIALIZE_PATH(path);
int pos_in_item; int pos_in_item;
int jbegin_count = JOURNAL_PER_BALANCE_CNT; int jbegin_count = JOURNAL_PER_BALANCE_CNT;
loff_t byte_offset = (block << inode->i_sb->s_blocksize_bits) + 1; loff_t byte_offset = ((loff_t)block << inode->i_sb->s_blocksize_bits)+1;
int retval; int retval;
int use_get_block = 0; int use_get_block = 0;
int bytes_copied = 0; int bytes_copied = 0;