From c499ec24c31edf270e777a868ffd0daddcfe7ebd Mon Sep 17 00:00:00 2001
From: "Vladimir V. Saveliev" <vs@namesys.com>
Date: Thu, 2 Mar 2006 02:54:39 -0800
Subject: [PATCH] [PATCH] reiserfs: do not check if unsigned < 0
This patch fixes bugs in reiserfs where unsigned integers were checked
whether they are less then 0.
Signed-off-by: Vladimir V. Saveliev <vs@namesys.com>
Cc: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Hans Reiser <reiser@namesys.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
fs/reiserfs/file.c | 14 +++++++-------
fs/reiserfs/inode.c | 8 ++------
fs/reiserfs/journal.c | 3 +--
3 files changed, 10 insertions(+), 15 deletions(-)
diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c
index f3473176c83a..be12879bb179 100644
--- a/fs/reiserfs/file.c
+++ b/fs/reiserfs/file.c
@@ -1464,13 +1464,11 @@ static ssize_t reiserfs_file_write(struct file *file, /* the file we are going t
partially overwritten pages, if needed. And lock the pages,
so that nobody else can access these until we are done.
We get number of actual blocks needed as a result. */
- blocks_to_allocate =
- reiserfs_prepare_file_region_for_write(inode, pos,
- num_pages,
- write_bytes,
- prepared_pages);
- if (blocks_to_allocate < 0) {
- res = blocks_to_allocate;
+ res = reiserfs_prepare_file_region_for_write(inode, pos,
+ num_pages,
+ write_bytes,
+ prepared_pages);
+ if (res < 0) {
reiserfs_release_claimed_blocks(inode->i_sb,
num_pages <<
(PAGE_CACHE_SHIFT -
@@ -1478,6 +1476,8 @@ static ssize_t reiserfs_file_write(struct file *file, /* the file we are going t
break;
}
+ blocks_to_allocate = res;
+
/* First we correct our estimate of how many blocks we need */
reiserfs_release_claimed_blocks(inode->i_sb,
(num_pages <<
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index b33d67bba2fd..d60f6238c66a 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -627,11 +627,6 @@ int reiserfs_get_block(struct inode *inode, sector_t block,
reiserfs_write_lock(inode->i_sb);
version = get_inode_item_key_version(inode);
- if (block < 0) {
- reiserfs_write_unlock(inode->i_sb);
- return -EIO;
- }
-
if (!file_capable(inode, block)) {
reiserfs_write_unlock(inode->i_sb);
return -EFBIG;
@@ -934,12 +929,13 @@ int reiserfs_get_block(struct inode *inode, sector_t block,
//pos_in_item * inode->i_sb->s_blocksize,
TYPE_INDIRECT, 3); // key type is unimportant
+ RFALSE(cpu_key_k_offset(&tmp_key) > cpu_key_k_offset(&key),
+ "green-805: invalid offset");
blocks_needed =
1 +
((cpu_key_k_offset(&key) -
cpu_key_k_offset(&tmp_key)) >> inode->i_sb->
s_blocksize_bits);
- RFALSE(blocks_needed < 0, "green-805: invalid offset");
if (blocks_needed == 1) {
un = &unf_single;
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index b7a179560ab4..5a9d2722fa0a 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -2319,8 +2319,7 @@ static int journal_read(struct super_block *p_s_sb)
return 1;
}
jh = (struct reiserfs_journal_header *)(journal->j_header_bh->b_data);
- if (le32_to_cpu(jh->j_first_unflushed_offset) >= 0 &&
- le32_to_cpu(jh->j_first_unflushed_offset) <
+ if (le32_to_cpu(jh->j_first_unflushed_offset) <
SB_ONDISK_JOURNAL_SIZE(p_s_sb)
&& le32_to_cpu(jh->j_last_flush_trans_id) > 0) {
oldest_start =
--
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