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| author | Al Viro <viro@zeniv.linux.org.uk> | 2015-06-17 01:10:03 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2015-07-06 17:39:32 -0400 |
| commit | 31cd043e1a09c579c4cd38ea432200fbeae6af1f (patch) | |
| tree | 8f0217ce551152f0189f064821f43bf269fe725e | |
| parent | 4e3911f3d704d681477cdb4e1a2bfd52d5e42d23 (diff) | |
| download | linux-31cd043e1a09c579c4cd38ea432200fbeae6af1f.tar.gz linux-31cd043e1a09c579c4cd38ea432200fbeae6af1f.tar.bz2 linux-31cd043e1a09c579c4cd38ea432200fbeae6af1f.zip | |
ufs: beginning of __ufs_truncate_block() massage
Use ufs_block_to_path() to find the cutoff path in the block pointers' tree.
For now just use the information about the depth (to bypass the fully
preserved subtrees); subsequent commits will use the information about actual
path.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/ufs/inode.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c index 43672183fee3..afb0f32b921c 100644 --- a/fs/ufs/inode.c +++ b/fs/ufs/inode.c @@ -1336,14 +1336,22 @@ static void __ufs_truncate_blocks(struct inode *inode) struct ufs_inode_info *ufsi = UFS_I(inode); struct super_block *sb = inode->i_sb; struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; + unsigned offsets[4]; + int depth = ufs_block_to_path(inode, DIRECT_BLOCK, offsets); mutex_lock(&ufsi->truncate_mutex); - ufs_trunc_direct(inode); - ufs_trunc_indirect(inode, UFS_IND_BLOCK, + switch (depth) { + case 1: + ufs_trunc_direct(inode); + case 2: + ufs_trunc_indirect(inode, UFS_IND_BLOCK, ufs_get_direct_data_ptr(uspi, ufsi, UFS_IND_BLOCK)); - ufs_trunc_dindirect(inode, UFS_IND_BLOCK + uspi->s_apb, + case 3: + ufs_trunc_dindirect(inode, UFS_IND_BLOCK + uspi->s_apb, ufs_get_direct_data_ptr(uspi, ufsi, UFS_DIND_BLOCK)); - ufs_trunc_tindirect(inode); + case 4: + ufs_trunc_tindirect(inode); + } ufsi->i_lastfrag = DIRECT_FRAGMENT; mutex_unlock(&ufsi->truncate_mutex); } |