• Jan Kara's avatar
    ocfs2: Implementation of local and global quota file handling · 9e33d69f
    Jan Kara authored
    
    
    For each quota type each node has local quota file. In this file it stores
    changes users have made to disk usage via this node. Once in a while this
    information is synced to global file (and thus with other nodes) so that
    limits enforcement at least aproximately works.
    
    Global quota files contain all the information about usage and limits. It's
    mostly handled by the generic VFS code (which implements a trie of structures
    inside a quota file). We only have to provide functions to convert structures
    from on-disk format to in-memory one. We also have to provide wrappers for
    various quota functions starting transactions and acquiring necessary cluster
    locks before the actual IO is really started.
    Signed-off-by: default avatarJan Kara <jack@suse.cz>
    Signed-off-by: default avatarMark Fasheh <mfasheh@suse.com>
    9e33d69f
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