lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

nilfs2: replace BUG_ON and BUG calls triggerable from ioctl

Browse Source 
Pekka Enberg advised me:
> It would be nice if BUG(), BUG_ON(), and panic() calls would be
> converted to proper error handling using WARN_ON() calls. The BUG()
> call in nilfs_cpfile_delete_checkpoints(), for example, looks to be
> triggerable from user-space via the ioctl() system call.

This will follow the comment and keep them to a minimum.

Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ryusuke Konishi
2009-04-06 19:01:55 -07:00
committed by Linus Torvalds
parent 2c2e52fc4f
commit 1f5abe7e7d
13 changed files with 144 additions and 160 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
fs/nilfs2/dat.c
View File

@ -135,7 +135,7 @@ int nilfs_dat_prepare_start(struct inode *dat, struct nilfs_palloc_req *req)
int ret;
ret = nilfs_dat_prepare_entry(dat, req, 0);
BUG_ON(ret == -ENOENT);
WARN_ON(ret == -ENOENT);
return ret;
}
@ -157,7 +157,6 @@ void nilfs_dat_commit_start(struct inode *dat, struct nilfs_palloc_req *req,
(unsigned long long)le64_to_cpu(entry->de_start),
(unsigned long long)le64_to_cpu(entry->de_end),
(unsigned long long)le64_to_cpu(entry->de_blocknr));
BUG();
}
entry->de_blocknr = cpu_to_le64(blocknr);
kunmap_atomic(kaddr, KM_USER0);
@ -180,7 +179,7 @@ int nilfs_dat_prepare_end(struct inode *dat, struct nilfs_palloc_req *req)
ret = nilfs_dat_prepare_entry(dat, req, 0);
if (ret < 0) {
BUG_ON(ret == -ENOENT);
WARN_ON(ret == -ENOENT);
return ret;
}
@ -216,7 +215,7 @@ void nilfs_dat_commit_end(struct inode *dat, struct nilfs_palloc_req *req,
end = start = le64_to_cpu(entry->de_start);
if (!dead) {
end = nilfs_mdt_cno(dat);
BUG_ON(start > end);
WARN_ON(start > end);
}
entry->de_end = cpu_to_le64(end);
blocknr = le64_to_cpu(entry->de_blocknr);
@ -324,14 +323,16 @@ int nilfs_dat_move(struct inode *dat, __u64 vblocknr, sector_t blocknr)
return ret;
kaddr = kmap_atomic(entry_bh->b_page, KM_USER0);
entry = nilfs_palloc_block_get_entry(dat, vblocknr, entry_bh, kaddr);
if (entry->de_blocknr == cpu_to_le64(0)) {
if (unlikely(entry->de_blocknr == cpu_to_le64(0))) {
printk(KERN_CRIT "%s: vbn = %llu, [%llu, %llu)\n", __func__,
(unsigned long long)vblocknr,
(unsigned long long)le64_to_cpu(entry->de_start),
(unsigned long long)le64_to_cpu(entry->de_end));
BUG();
kunmap_atomic(kaddr, KM_USER0);
brelse(entry_bh);
return -EINVAL;
}
BUG_ON(blocknr == 0);
WARN_ON(blocknr == 0);
entry->de_blocknr = cpu_to_le64(blocknr);
kunmap_atomic(kaddr, KM_USER0);