47 static inline MFT_RECORD *map_mft_record_page(ntfs_inode *ni)  in map_mft_record_page()  argument
50 	ntfs_volume *vol = ni->vol;  in map_mft_record_page()
56 	BUG_ON(ni->page);  in map_mft_record_page()
63 	index = (u64)ni->mft_no << vol->mft_record_size_bits >>  in map_mft_record_page()
65 	ofs = (ni->mft_no << vol->mft_record_size_bits) & ~PAGE_CACHE_MASK;  in map_mft_record_page()
79 					"driver.", ni->mft_no);  in map_mft_record_page()
89 			ni->page = page;  in map_mft_record_page()
90 			ni->page_ofs = ofs;  in map_mft_record_page()
94 				"Run chkdsk.", ni->mft_no);  in map_mft_record_page()
100 	ni->page = NULL;  in map_mft_record_page()
101 	ni->page_ofs = 0;  in map_mft_record_page()
155 MFT_RECORD *map_mft_record(ntfs_inode *ni)  in map_mft_record()  argument
159 	ntfs_debug("Entering for mft_no 0x%lx.", ni->mft_no);  in map_mft_record()
162 	atomic_inc(&ni->count);  in map_mft_record()
165 	mutex_lock(&ni->mrec_lock);  in map_mft_record()
167 	m = map_mft_record_page(ni);  in map_mft_record()
171 	mutex_unlock(&ni->mrec_lock);  in map_mft_record()
172 	atomic_dec(&ni->count);  in map_mft_record()
173 	ntfs_error(ni->vol->sb, "Failed with error code %lu.", -PTR_ERR(m));  in map_mft_record()
191 static inline void unmap_mft_record_page(ntfs_inode *ni)  in unmap_mft_record_page()  argument
193 	BUG_ON(!ni->page);  in unmap_mft_record_page()
196 	ntfs_unmap_page(ni->page);  in unmap_mft_record_page()
197 	ni->page = NULL;  in unmap_mft_record_page()
198 	ni->page_ofs = 0;  in unmap_mft_record_page()
213 void unmap_mft_record(ntfs_inode *ni)  in unmap_mft_record()  argument
215 	struct page *page = ni->page;  in unmap_mft_record()
219 	ntfs_debug("Entering for mft_no 0x%lx.", ni->mft_no);  in unmap_mft_record()
221 	unmap_mft_record_page(ni);  in unmap_mft_record()
222 	mutex_unlock(&ni->mrec_lock);  in unmap_mft_record()
223 	atomic_dec(&ni->count);  in unmap_mft_record()
250 	ntfs_inode *ni = NULL;  in map_extent_mft_record()  local
272 			ni = extent_nis[i];  in map_extent_mft_record()
274 			atomic_inc(&ni->count);  in map_extent_mft_record()
278 	if (likely(ni != NULL)) {  in map_extent_mft_record()
282 		m = map_mft_record(ni);  in map_extent_mft_record()
284 		atomic_dec(&ni->count);  in map_extent_mft_record()
289 				*ntfs_ino = ni;  in map_extent_mft_record()
292 			unmap_mft_record(ni);  in map_extent_mft_record()
304 	ni = ntfs_new_extent_inode(base_ni->vol->sb, mft_no);  in map_extent_mft_record()
305 	if (unlikely(!ni)) {  in map_extent_mft_record()
310 	ni->vol = base_ni->vol;  in map_extent_mft_record()
311 	ni->seq_no = seq_no;  in map_extent_mft_record()
312 	ni->nr_extents = -1;  in map_extent_mft_record()
313 	ni->ext.base_ntfs_ino = base_ni;  in map_extent_mft_record()
315 	m = map_mft_record(ni);  in map_extent_mft_record()
319 		ntfs_clear_extent_inode(ni);  in map_extent_mft_record()
351 	base_ni->ext.extent_ntfs_inos[base_ni->nr_extents++] = ni;  in map_extent_mft_record()
355 	*ntfs_ino = ni;  in map_extent_mft_record()
358 	unmap_mft_record(ni);  in map_extent_mft_record()
366 		ntfs_clear_extent_inode(ni);  in map_extent_mft_record()
395 void __mark_mft_record_dirty(ntfs_inode *ni)  in __mark_mft_record_dirty()  argument
399 	ntfs_debug("Entering for inode 0x%lx.", ni->mft_no);  in __mark_mft_record_dirty()
400 	BUG_ON(NInoAttr(ni));  in __mark_mft_record_dirty()
401 	mark_ntfs_record_dirty(ni->page, ni->page_ofs);  in __mark_mft_record_dirty()
403 	mutex_lock(&ni->extent_lock);  in __mark_mft_record_dirty()
404 	if (likely(ni->nr_extents >= 0))  in __mark_mft_record_dirty()
405 		base_ni = ni;  in __mark_mft_record_dirty()
407 		base_ni = ni->ext.base_ntfs_ino;  in __mark_mft_record_dirty()
408 	mutex_unlock(&ni->extent_lock);  in __mark_mft_record_dirty()
669 int write_mft_record_nolock(ntfs_inode *ni, MFT_RECORD *m, int sync)  in write_mft_record_nolock()  argument
671 	ntfs_volume *vol = ni->vol;  in write_mft_record_nolock()
672 	struct page *page = ni->page;  in write_mft_record_nolock()
682 	ntfs_debug("Entering for inode 0x%lx.", ni->mft_no);  in write_mft_record_nolock()
683 	BUG_ON(NInoAttr(ni));  in write_mft_record_nolock()
692 	if (!NInoTestClearDirty(ni))  in write_mft_record_nolock()
699 	m_start = ni->page_ofs;  in write_mft_record_nolock()
729 			vcn = ((VCN)ni->mft_no << vol->mft_record_size_bits) +  in write_mft_record_nolock()
755 						ni->mft_no, (long long)lcn);  in write_mft_record_nolock()
777 	flush_dcache_mft_record_page(ni);  in write_mft_record_nolock()
791 	if (!sync && ni->mft_no < vol->mftmirr_size)  in write_mft_record_nolock()
792 		ntfs_sync_mft_mirror(vol, ni->mft_no, m, sync);  in write_mft_record_nolock()
809 	if (sync && ni->mft_no < vol->mftmirr_size)  in write_mft_record_nolock()
810 		ntfs_sync_mft_mirror(vol, ni->mft_no, m, sync);  in write_mft_record_nolock()
813 	flush_dcache_mft_record_page(ni);  in write_mft_record_nolock()
819 				ni->mft_no);  in write_mft_record_nolock()
839 		mark_mft_record_dirty(ni);  in write_mft_record_nolock()
931 	ntfs_inode *ni, *eni, **extent_nis;  in ntfs_may_write_mft_record()  local
971 		ni = NTFS_I(vi);  in ntfs_may_write_mft_record()
973 		atomic_inc(&ni->count);  in ntfs_may_write_mft_record()
975 		if (NInoDirty(ni)) {  in ntfs_may_write_mft_record()
978 			atomic_dec(&ni->count);  in ntfs_may_write_mft_record()
984 		if (unlikely(!mutex_trylock(&ni->mrec_lock))) {  in ntfs_may_write_mft_record()
987 			atomic_dec(&ni->count);  in ntfs_may_write_mft_record()
997 		*locked_ni = ni;  in ntfs_may_write_mft_record()
1043 	ni = NTFS_I(vi);  in ntfs_may_write_mft_record()
1044 	mutex_lock(&ni->extent_lock);  in ntfs_may_write_mft_record()
1045 	if (ni->nr_extents <= 0) {  in ntfs_may_write_mft_record()
1050 		mutex_unlock(&ni->extent_lock);  in ntfs_may_write_mft_record()
1057 	extent_nis = ni->ext.extent_ntfs_inos;  in ntfs_may_write_mft_record()
1058 	for (eni = NULL, i = 0; i < ni->nr_extents; ++i) {  in ntfs_may_write_mft_record()
1073 		mutex_unlock(&ni->extent_lock);  in ntfs_may_write_mft_record()
1084 	mutex_unlock(&ni->extent_lock);  in ntfs_may_write_mft_record()
2250 	ntfs_inode *mft_ni, *mftbmp_ni, *ni;  in ntfs_mft_record_alloc()  local
2593 		m_tmp = map_extent_mft_record(base_ni, bit, &ni);  in ntfs_mft_record_alloc()
2656 		ni = NTFS_I(vi);  in ntfs_mft_record_alloc()
2665 			NInoSetMstProtected(ni);  in ntfs_mft_record_alloc()
2666 			ni->type = AT_INDEX_ALLOCATION;  in ntfs_mft_record_alloc()
2667 			ni->name = I30;  in ntfs_mft_record_alloc()
2668 			ni->name_len = 4;  in ntfs_mft_record_alloc()
2670 			ni->itype.index.block_size = 4096;  in ntfs_mft_record_alloc()
2671 			ni->itype.index.block_size_bits = ntfs_ffs(4096) - 1;  in ntfs_mft_record_alloc()
2672 			ni->itype.index.collation_rule = COLLATION_FILE_NAME;  in ntfs_mft_record_alloc()
2673 			if (vol->cluster_size <= ni->itype.index.block_size) {  in ntfs_mft_record_alloc()
2674 				ni->itype.index.vcn_size = vol->cluster_size;  in ntfs_mft_record_alloc()
2675 				ni->itype.index.vcn_size_bits =  in ntfs_mft_record_alloc()
2678 				ni->itype.index.vcn_size = vol->sector_size;  in ntfs_mft_record_alloc()
2679 				ni->itype.index.vcn_size_bits =  in ntfs_mft_record_alloc()
2686 			ni->type = AT_DATA;  in ntfs_mft_record_alloc()
2687 			ni->name = NULL;  in ntfs_mft_record_alloc()
2688 			ni->name_len = 0;  in ntfs_mft_record_alloc()
2704 		vi->i_generation = ni->seq_no = le16_to_cpu(m->sequence_number);  in ntfs_mft_record_alloc()
2709 		atomic_inc(&ni->count);  in ntfs_mft_record_alloc()
2710 		mutex_lock(&ni->mrec_lock);  in ntfs_mft_record_alloc()
2711 		ni->page = page;  in ntfs_mft_record_alloc()
2712 		ni->page_ofs = ofs;  in ntfs_mft_record_alloc()
2739 	return ni;  in ntfs_mft_record_alloc()
2784 int ntfs_extent_mft_record_free(ntfs_inode *ni, MFT_RECORD *m)  in ntfs_extent_mft_record_free()  argument
2786 	unsigned long mft_no = ni->mft_no;  in ntfs_extent_mft_record_free()
2787 	ntfs_volume *vol = ni->vol;  in ntfs_extent_mft_record_free()
2794 	BUG_ON(NInoAttr(ni));  in ntfs_extent_mft_record_free()
2795 	BUG_ON(ni->nr_extents != -1);  in ntfs_extent_mft_record_free()
2797 	mutex_lock(&ni->extent_lock);  in ntfs_extent_mft_record_free()
2798 	base_ni = ni->ext.base_ntfs_ino;  in ntfs_extent_mft_record_free()
2799 	mutex_unlock(&ni->extent_lock);  in ntfs_extent_mft_record_free()
2809 	if (atomic_read(&ni->count) > 2) {  in ntfs_extent_mft_record_free()
2820 		if (ni != extent_nis[i])  in ntfs_extent_mft_record_free()
2861 	NInoSetDirty(ni);  in ntfs_extent_mft_record_free()
2862 	err = write_mft_record(ni, m, 0);  in ntfs_extent_mft_record_free()
2870 	unmap_extent_mft_record(ni);  in ntfs_extent_mft_record_free()
2871 	ntfs_clear_extent_inode(ni);  in ntfs_extent_mft_record_free()
2912 	extent_nis[base_ni->nr_extents++] = ni;  in ntfs_extent_mft_record_free()
2914 	mark_mft_record_dirty(ni);  in ntfs_extent_mft_record_free()