1 // SPDX-License-Identifier: GPL-2.0
20 	struct super_block *sb, u64 fragment, u64 size)  in _ubh_bread_()  argument
25 	if (size & ~uspi->s_fmask)  in _ubh_bread_()
27 	count = size >> uspi->s_fshift;  in _ubh_bread_()
33 	ubh->fragment = fragment;  in _ubh_bread_()
34 	ubh->count = count;  in _ubh_bread_()
36 		if (!(ubh->bh[i] = sb_bread(sb, fragment + i)))  in _ubh_bread_()
39 		ubh->bh[i] = NULL;  in _ubh_bread_()
43 		brelse (ubh->bh[j]);  in _ubh_bread_()
49 	struct super_block *sb, u64 fragment, u64 size)  in ubh_bread_uspi()  argument
53 	if (size & ~uspi->s_fmask)  in ubh_bread_uspi()
55 	count = size >> uspi->s_fshift;  in ubh_bread_uspi()
58 	USPI_UBH(uspi)->fragment = fragment;  in ubh_bread_uspi()
59 	USPI_UBH(uspi)->count = count;  in ubh_bread_uspi()
61 		if (!(USPI_UBH(uspi)->bh[i] = sb_bread(sb, fragment + i)))  in ubh_bread_uspi()
64 		USPI_UBH(uspi)->bh[i] = NULL;  in ubh_bread_uspi()
68 		brelse (USPI_UBH(uspi)->bh[j]);  in ubh_bread_uspi()
77 	for (i = 0; i < ubh->count; i++)  in ubh_brelse()
78 		brelse (ubh->bh[i]);  in ubh_brelse()
87 	for ( i = 0; i < USPI_UBH(uspi)->count; i++ ) {  in ubh_brelse_uspi()
88 		brelse (USPI_UBH(uspi)->bh[i]);  in ubh_brelse_uspi()
89 		USPI_UBH(uspi)->bh[i] = NULL;  in ubh_brelse_uspi()
98 	for ( i = 0; i < ubh->count; i++ )  in ubh_mark_buffer_dirty()
99 		mark_buffer_dirty (ubh->bh[i]);  in ubh_mark_buffer_dirty()
108 		for ( i = 0; i < ubh->count; i++ )  in ubh_mark_buffer_uptodate()
109 			set_buffer_uptodate (ubh->bh[i]);  in ubh_mark_buffer_uptodate()
111 		for ( i = 0; i < ubh->count; i++ )  in ubh_mark_buffer_uptodate()
112 			clear_buffer_uptodate (ubh->bh[i]);  in ubh_mark_buffer_uptodate()
121 		for (i = 0; i < ubh->count; i++)  in ubh_sync_block()
122 			write_dirty_buffer(ubh->bh[i], 0);  in ubh_sync_block()
124 		for (i = 0; i < ubh->count; i++)  in ubh_sync_block()
125 			wait_on_buffer(ubh->bh[i]);  in ubh_sync_block()
134 	for ( i = 0; i < ubh->count; i++ ) if ( ubh->bh[i] )   in ubh_bforget()
135 		bforget (ubh->bh[i]);  in ubh_bforget()
144 	for ( i = 0; i < ubh->count; i++ )  in ubh_buffer_dirty()
145 		result |= buffer_dirty(ubh->bh[i]);  in ubh_buffer_dirty()
150 	unsigned char * mem, struct ufs_buffer_head * ubh, unsigned size)  in _ubh_ubhcpymem_()  argument
153 	if (size > (ubh->count << uspi->s_fshift))  in _ubh_ubhcpymem_()
154 		size = ubh->count << uspi->s_fshift;  in _ubh_ubhcpymem_()
156 	while (size) {  in _ubh_ubhcpymem_()
157 		len = min_t(unsigned int, size, uspi->s_fsize);  in _ubh_ubhcpymem_()
158 		memcpy (mem, ubh->bh[bhno]->b_data, len);  in _ubh_ubhcpymem_()
159 		mem += uspi->s_fsize;  in _ubh_ubhcpymem_()
160 		size -= len;  in _ubh_ubhcpymem_()
166 	struct ufs_buffer_head * ubh, unsigned char * mem, unsigned size)  in _ubh_memcpyubh_()  argument
169 	if (size > (ubh->count << uspi->s_fshift))  in _ubh_memcpyubh_()
170 		size = ubh->count << uspi->s_fshift;  in _ubh_memcpyubh_()
172 	while (size) {  in _ubh_memcpyubh_()
173 		len = min_t(unsigned int, size, uspi->s_fsize);  in _ubh_memcpyubh_()
174 		memcpy (ubh->bh[bhno]->b_data, mem, len);  in _ubh_memcpyubh_()
175 		mem += uspi->s_fsize;  in _ubh_memcpyubh_()
176 		size -= len;  in _ubh_memcpyubh_()
187 	if ((UFS_SB(sb)->s_flags & UFS_ST_MASK) == UFS_ST_SUNx86)  in ufs_get_inode_dev()
188 		fs32 = fs32_to_cpu(sb, ufsi->i_u1.i_data[1]);  in ufs_get_inode_dev()
190 		fs32 = fs32_to_cpu(sb, ufsi->i_u1.i_data[0]);  in ufs_get_inode_dev()
191 	switch (UFS_SB(sb)->s_flags & UFS_ST_MASK) {  in ufs_get_inode_dev()
213 	switch (UFS_SB(sb)->s_flags & UFS_ST_MASK) {  in ufs_set_inode_dev()
226 	if ((UFS_SB(sb)->s_flags & UFS_ST_MASK) == UFS_ST_SUNx86)  in ufs_set_inode_dev()
227 		ufsi->i_u1.i_data[1] = cpu_to_fs32(sb, fs32);  in ufs_set_inode_dev()
229 		ufsi->i_u1.i_data[0] = cpu_to_fs32(sb, fs32);  in ufs_set_inode_dev()
233  * ufs_get_locked_page() - locate, pin and lock a pagecache page, if not exist
236  * @index: the page index
238  * Locates the desired pagecache page, if not exist we'll read it,
244 struct page *ufs_get_locked_page(struct address_space *mapping,  in ufs_get_locked_page()
247 	struct inode *inode = mapping->host;  in ufs_get_locked_page()
248 	struct page *page = find_lock_page(mapping, index);  in ufs_get_locked_page()  local
249 	if (!page) {  in ufs_get_locked_page()
250 		page = read_mapping_page(mapping, index, NULL);  in ufs_get_locked_page()
252 		if (IS_ERR(page)) {  in ufs_get_locked_page()
255 			       mapping->host->i_ino, index);  in ufs_get_locked_page()
256 			return page;  in ufs_get_locked_page()
259 		lock_page(page);  in ufs_get_locked_page()
261 		if (unlikely(page->mapping == NULL)) {  in ufs_get_locked_page()
263 			unlock_page(page);  in ufs_get_locked_page()
264 			put_page(page);  in ufs_get_locked_page()
268 		if (!PageUptodate(page) || PageError(page)) {  in ufs_get_locked_page()
269 			unlock_page(page);  in ufs_get_locked_page()
270 			put_page(page);  in ufs_get_locked_page()
273 			       "can not read page: ino %lu, index: %lu\n",  in ufs_get_locked_page()
274 			       inode->i_ino, index);  in ufs_get_locked_page()
276 			return ERR_PTR(-EIO);  in ufs_get_locked_page()
279 	if (!page_has_buffers(page))  in ufs_get_locked_page()
280 		create_empty_buffers(page, 1 << inode->i_blkbits, 0);  in ufs_get_locked_page()
281 	return page;  in ufs_get_locked_page()