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| author | Li Zefan <lizf@cn.fujitsu.com> | 2011-04-20 10:31:50 +0800 |
|---|---|---|
| committer | Li Zefan <lizf@cn.fujitsu.com> | 2011-04-25 16:46:09 +0800 |
| commit | 33345d01522f8152f99dc84a3e7a1a45707f387f (patch) | |
| tree | 6a978702dc4421768e63501fa15bc8fedd5bff32 /fs/btrfs/file-item.c | |
| parent | 0414efae7989a2183fb2cc000ab285c4c2836a00 (diff) | |
| download | linux-rt-33345d01522f8152f99dc84a3e7a1a45707f387f.tar.gz | |
Btrfs: Always use 64bit inode number
There's a potential problem in 32bit system when we exhaust 32bit inode
numbers and start to allocate big inode numbers, because btrfs uses
inode->i_ino in many places.
So here we always use BTRFS_I(inode)->location.objectid, which is an
u64 variable.
There are 2 exceptions that BTRFS_I(inode)->location.objectid !=
inode->i_ino: the btree inode (0 vs 1) and empty subvol dirs (256 vs 2),
and inode->i_ino will be used in those cases.
Another reason to make this change is I'm going to use a special inode
to save free ino cache, and the inode number must be > (u64)-256.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Diffstat (limited to 'fs/btrfs/file-item.c')
| -rw-r--r-- | fs/btrfs/file-item.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c index a6a9d4e8b491..1d9410e39212 100644 --- a/fs/btrfs/file-item.c +++ b/fs/btrfs/file-item.c @@ -208,8 +208,9 @@ static int __btrfs_lookup_bio_sums(struct btrfs_root *root, EXTENT_NODATASUM, GFP_NOFS); } else { printk(KERN_INFO "btrfs no csum found " - "for inode %lu start %llu\n", - inode->i_ino, + "for inode %llu start %llu\n", + (unsigned long long) + btrfs_ino(inode), (unsigned long long)offset); } item = NULL; |