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    NFS: Remove BKL requirement from attribute updates · a3d01454
    Trond Myklebust 提交于
    The main problem is dealing with inode->i_size: we need to set the
    inode->i_lock on all attribute updates, and so vmtruncate won't cut it.
    Make an NFS-private version of vmtruncate that has the necessary locking
    semantics.
    
    The result should be that the following inode attribute updates are
    protected by inode->i_lock
    	nfsi->cache_validity
    	nfsi->read_cache_jiffies
    	nfsi->attrtimeo
    	nfsi->attrtimeo_timestamp
    	nfsi->change_attr
    	nfsi->last_updated
    	nfsi->cache_change_attribute
    	nfsi->access_cache
    	nfsi->access_cache_entry_lru
    	nfsi->access_cache_inode_lru
    	nfsi->acl_access
    	nfsi->acl_default
    	nfsi->nfs_page_tree
    	nfsi->ncommit
    	nfsi->npages
    	nfsi->open_files
    	nfsi->silly_list
    	nfsi->acl
    	nfsi->open_states
    	inode->i_size
    	inode->i_atime
    	inode->i_mtime
    	inode->i_ctime
    	inode->i_nlink
    	inode->i_uid
    	inode->i_gid
    
    The following is protected by dir->i_mutex
    	nfsi->cookieverf
    Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
    a3d01454
write.c 39.5 KB