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ext4: fix quota accounting during migration

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The tmp_inode should have same uid/gid as the original inode.
Otherwise new metadata blocks will be accounted to wrong quota-id,
which will result in a quota leak after the inode migration is
completed.

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Dmitry Monakhov
2011-10-29 09:05:00 -04:00
committed by Theodore Ts'o
parent fba90ffee8
commit 5cb81dabcc
4 changed files with 17 additions and 10 deletions
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7
fs/ext4/migrate.c
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@@ -439,6 +439,7 @@ int ext4_ext_migrate(struct inode *inode)
struct migrate_struct lb;
unsigned long max_entries;
__u32 goal;
uid_t owner[2];
/*
* If the filesystem does not support extents, or the inode
@@ -466,10 +467,12 @@ int ext4_ext_migrate(struct inode *inode)
}
goal = (((inode->i_ino - 1) / EXT4_INODES_PER_GROUP(inode->i_sb)) *
EXT4_INODES_PER_GROUP(inode->i_sb)) + 1;
owner[0] = inode->i_uid;
owner[1] = inode->i_gid;
tmp_inode = ext4_new_inode(handle, inode->i_sb->s_root->d_inode,
S_IFREG, NULL, goal);
S_IFREG, NULL, goal, owner);
if (IS_ERR(tmp_inode)) {
retval = -ENOMEM;
retval = PTR_ERR(inode);
ext4_journal_stop(handle);
return retval;
}