fs/ufs/util.c

22 	struct ufs_buffer_head * ubh;
30 	ubh = kmalloc (sizeof (struct ufs_buffer_head), GFP_NOFS);
31 	if (!ubh)
33 	ubh->fragment = fragment;
34 	ubh->count = count;
36 		if (!(ubh->bh[i] = sb_bread(sb, fragment + i)))
39 		ubh->bh[i] = NULL;
40 	return ubh;
43 		brelse (ubh->bh[j]);
44 	kfree(ubh);
72 void ubh_brelse (struct ufs_buffer_head * ubh)
75 	if (!ubh)
77 	for (i = 0; i < ubh->count; i++)
78 		brelse (ubh->bh[i]);
79 	kfree (ubh);
93 void ubh_mark_buffer_dirty (struct ufs_buffer_head * ubh)
96 	if (!ubh)
98 	for ( i = 0; i < ubh->count; i++ )
99 		mark_buffer_dirty (ubh->bh[i]);
102 void ubh_mark_buffer_uptodate (struct ufs_buffer_head * ubh, int flag)
105 	if (!ubh)
108 		for ( i = 0; i < ubh->count; i++ )
109 			set_buffer_uptodate (ubh->bh[i]);
111 		for ( i = 0; i < ubh->count; i++ )
112 			clear_buffer_uptodate (ubh->bh[i]);
116 void ubh_sync_block(struct ufs_buffer_head *ubh)
118 	if (ubh) {
121 		for (i = 0; i < ubh->count; i++)
122 			write_dirty_buffer(ubh->bh[i], 0);
124 		for (i = 0; i < ubh->count; i++)
125 			wait_on_buffer(ubh->bh[i]);
129 void ubh_bforget (struct ufs_buffer_head * ubh)
132 	if (!ubh)
134 	for ( i = 0; i < ubh->count; i++ ) if ( ubh->bh[i] )
135 		bforget (ubh->bh[i]);
138 int ubh_buffer_dirty (struct ufs_buffer_head * ubh)
142 	if (!ubh)
144 	for ( i = 0; i < ubh->count; i++ )
145 		result |= buffer_dirty(ubh->bh[i]);
150 	unsigned char * mem, struct ufs_buffer_head * ubh, unsigned size)
153 	if (size > (ubh->count << uspi->s_fshift))
154 		size = ubh->count << uspi->s_fshift;
158 		memcpy (mem, ubh->bh[bhno]->b_data, len);
166 	struct ufs_buffer_head * ubh, unsigned char * mem, unsigned size)
169 	if (size > (ubh->count << uspi->s_fshift))
170 		size = ubh->count << uspi->s_fshift;
174 		memcpy (ubh->bh[bhno]->b_data, mem, len);