Cross Reference: /dovecot/src/lib/file-cache.c

Lines Matching refs:offset
104 ssize_t file_cache_read(struct file_cache *cache, uoff_t offset, size_t size)
119 	if (offset >= (uoff_t)-1 - size)
120 		size = (uoff_t)-1 - offset;
122 	if (offset + size > cache->mmap_length &&
123 	    offset + size - cache->mmap_length > 1024*1024) {
135 		if (offset + size > (uoff_t)st.st_size) {
136 			if (offset >= (uoff_t)st.st_size)
138 			size = (uoff_t)st.st_size - offset;
142 	if (file_cache_set_size(cache, offset + size) < 0)
145 	poffset = offset / page_size;
146 	psize = (offset + size + page_size-1) / page_size - poffset;
170 			if (offset + size <= cache->read_highwater) {
196 			return dest_offset <= offset ? 0 :
197 				dest_offset - offset < size ?
198 				dest_offset - offset : size;
237 		      uoff_t offset)
244 	i_assert((uoff_t)-1 - offset > size);
246 	if (file_cache_set_size(cache, offset + size) < 0) {
249 		file_cache_invalidate(cache, offset, size);
253 	memcpy(PTR_OFFSET(cache->mmap_base, offset), data, size);
255 	if (cache->read_highwater < offset + size) {
261 		cache->read_highwater = offset + size;
266 		first_page = offset / page_size;
267 		last_page = (offset + size) / page_size;
268 		if ((offset % page_size) != 0)
280 void file_cache_invalidate(struct file_cache *cache, uoff_t offset, uoff_t size)
286 	if (offset >= cache->read_highwater || size == 0)
291 	if (size > cache->read_highwater - offset) {
293 		size = cache->read_highwater - offset;
298 		cache->read_highwater = offset & ~(page_size-1);
301 	size = (offset + size + page_size-1) / page_size;
302 	offset /= page_size;
303 	i_assert(size > offset);
304 	size -= offset;
311 		(void)madvise(PTR_OFFSET(cache->mmap_base, offset * page_size),
315 	bits = buffer_get_space_unsafe(cache->page_bitmask, offset / CHAR_BIT,
319 	for (i = offset % CHAR_BIT, mask = 0; i < CHAR_BIT && size > 0; i++) {