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authorAl Viro <viro@zeniv.linux.org.uk>2017-06-09 16:20:34 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2017-06-09 16:28:01 -0400
commitbabef37dccbaa49249a22bae9150686815d7be71 (patch)
tree505658793d3ac66c9e103ae27ef1560b46bc6912 /fs/ufs
parent006351ac8ead0d4a67dd3845e3ceffe650a23212 (diff)
downloadlinux-stericsson-babef37dccbaa49249a22bae9150686815d7be71.tar.gz
excessive checks in ufs_write_failed() and ufs_evict_inode()
As it is, short copy in write() to append-only file will fail to truncate the excessive allocated blocks. As the matter of fact, all checks in ufs_truncate_blocks() are either redundant or wrong for that caller. As for the only other caller (ufs_evict_inode()), we only need the file type checks there. Cc: stable@vger.kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ufs')
-rw-r--r--fs/ufs/inode.c18
1 files changed, 5 insertions, 13 deletions
diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c
index 9bf10285c628..34f11cf0900a 100644
--- a/fs/ufs/inode.c
+++ b/fs/ufs/inode.c
@@ -844,7 +844,9 @@ void ufs_evict_inode(struct inode * inode)
truncate_inode_pages_final(&inode->i_data);
if (want_delete) {
inode->i_size = 0;
- if (inode->i_blocks)
+ if (inode->i_blocks &&
+ (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
+ S_ISLNK(inode->i_mode)))
ufs_truncate_blocks(inode);
}
@@ -1103,7 +1105,7 @@ out:
return err;
}
-static void __ufs_truncate_blocks(struct inode *inode)
+static void ufs_truncate_blocks(struct inode *inode)
{
struct ufs_inode_info *ufsi = UFS_I(inode);
struct super_block *sb = inode->i_sb;
@@ -1186,7 +1188,7 @@ static int ufs_truncate(struct inode *inode, loff_t size)
truncate_setsize(inode, size);
- __ufs_truncate_blocks(inode);
+ ufs_truncate_blocks(inode);
inode->i_mtime = inode->i_ctime = current_time(inode);
mark_inode_dirty(inode);
out:
@@ -1194,16 +1196,6 @@ out:
return err;
}
-static void ufs_truncate_blocks(struct inode *inode)
-{
- if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
- S_ISLNK(inode->i_mode)))
- return;
- if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
- return;
- __ufs_truncate_blocks(inode);
-}
-
int ufs_setattr(struct dentry *dentry, struct iattr *attr)
{
struct inode *inode = d_inode(dentry);