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- #ifdef NTFS_RW
- #include <linux/pagemap.h>
- #include "lcnalloc.h"
- #include "debug.h"
- #include "bitmap.h"
- #include "inode.h"
- #include "volume.h"
- #include "attrib.h"
- #include "malloc.h"
- #include "aops.h"
- #include "ntfs.h"
- int ntfs_cluster_free_from_rl_nolock(ntfs_volume *vol,
- const runlist_element *rl)
- {
- struct inode *lcnbmp_vi = vol->lcnbmp_ino;
- int ret = 0;
- ntfs_debug("Entering.");
- if (!rl)
- return 0;
- for (; rl->length; rl++) {
- int err;
- if (rl->lcn < 0)
- continue;
- err = ntfs_bitmap_clear_run(lcnbmp_vi, rl->lcn, rl->length);
- if (unlikely(err && (!ret || ret == -ENOMEM) && ret != err))
- ret = err;
- }
- ntfs_debug("Done.");
- return ret;
- }
- runlist_element *ntfs_cluster_alloc(ntfs_volume *vol, const VCN start_vcn,
- const s64 count, const LCN start_lcn,
- const NTFS_CLUSTER_ALLOCATION_ZONES zone,
- const bool is_extension)
- {
- LCN zone_start, zone_end, bmp_pos, bmp_initial_pos, last_read_pos, lcn;
- LCN prev_lcn = 0, prev_run_len = 0, mft_zone_size;
- s64 clusters;
- loff_t i_size;
- struct inode *lcnbmp_vi;
- runlist_element *rl = NULL;
- struct address_space *mapping;
- struct page *page = NULL;
- u8 *buf, *byte;
- int err = 0, rlpos, rlsize, buf_size;
- u8 pass, done_zones, search_zone, need_writeback = 0, bit;
- ntfs_debug("Entering for start_vcn 0x%llx, count 0x%llx, start_lcn "
- "0x%llx, zone %s_ZONE.", (unsigned long long)start_vcn,
- (unsigned long long)count,
- (unsigned long long)start_lcn,
- zone == MFT_ZONE ? "MFT" : "DATA");
- BUG_ON(!vol);
- lcnbmp_vi = vol->lcnbmp_ino;
- BUG_ON(!lcnbmp_vi);
- BUG_ON(start_vcn < 0);
- BUG_ON(count < 0);
- BUG_ON(start_lcn < -1);
- BUG_ON(zone < FIRST_ZONE);
- BUG_ON(zone > LAST_ZONE);
-
- if (!count)
- return NULL;
-
- down_write(&vol->lcnbmp_lock);
-
- done_zones = 0;
- pass = 1;
-
- zone_start = start_lcn;
- if (zone_start < 0) {
- if (zone == DATA_ZONE)
- zone_start = vol->data1_zone_pos;
- else
- zone_start = vol->mft_zone_pos;
- if (!zone_start) {
-
- pass = 2;
- }
- } else if (zone == DATA_ZONE && zone_start >= vol->mft_zone_start &&
- zone_start < vol->mft_zone_end) {
- zone_start = vol->mft_zone_end;
-
- pass = 2;
- } else if (zone == MFT_ZONE && (zone_start < vol->mft_zone_start ||
- zone_start >= vol->mft_zone_end)) {
- zone_start = vol->mft_lcn;
- if (!vol->mft_zone_end)
- zone_start = 0;
-
- pass = 2;
- }
- if (zone == MFT_ZONE) {
- zone_end = vol->mft_zone_end;
- search_zone = 1;
- } else {
-
- done_zones |= 1;
- if (zone_start >= vol->mft_zone_end) {
- zone_end = vol->nr_clusters;
- search_zone = 2;
- } else {
- zone_end = vol->mft_zone_start;
- search_zone = 4;
- }
- }
-
- bmp_pos = bmp_initial_pos = zone_start;
-
- clusters = count;
- rlpos = rlsize = 0;
- mapping = lcnbmp_vi->i_mapping;
- i_size = i_size_read(lcnbmp_vi);
- while (1) {
- ntfs_debug("Start of outer while loop: done_zones 0x%x, "
- "search_zone %i, pass %i, zone_start 0x%llx, "
- "zone_end 0x%llx, bmp_initial_pos 0x%llx, "
- "bmp_pos 0x%llx, rlpos %i, rlsize %i.",
- done_zones, search_zone, pass,
- (unsigned long long)zone_start,
- (unsigned long long)zone_end,
- (unsigned long long)bmp_initial_pos,
- (unsigned long long)bmp_pos, rlpos, rlsize);
-
- last_read_pos = bmp_pos >> 3;
- ntfs_debug("last_read_pos 0x%llx.",
- (unsigned long long)last_read_pos);
- if (last_read_pos > i_size) {
- ntfs_debug("End of attribute reached. "
- "Skipping to zone_pass_done.");
- goto zone_pass_done;
- }
- if (likely(page)) {
- if (need_writeback) {
- ntfs_debug("Marking page dirty.");
- flush_dcache_page(page);
- set_page_dirty(page);
- need_writeback = 0;
- }
- ntfs_unmap_page(page);
- }
- page = ntfs_map_page(mapping, last_read_pos >>
- PAGE_SHIFT);
- if (IS_ERR(page)) {
- err = PTR_ERR(page);
- ntfs_error(vol->sb, "Failed to map page.");
- goto out;
- }
- buf_size = last_read_pos & ~PAGE_MASK;
- buf = page_address(page) + buf_size;
- buf_size = PAGE_SIZE - buf_size;
- if (unlikely(last_read_pos + buf_size > i_size))
- buf_size = i_size - last_read_pos;
- buf_size <<= 3;
- lcn = bmp_pos & 7;
- bmp_pos &= ~(LCN)7;
- ntfs_debug("Before inner while loop: buf_size %i, lcn 0x%llx, "
- "bmp_pos 0x%llx, need_writeback %i.", buf_size,
- (unsigned long long)lcn,
- (unsigned long long)bmp_pos, need_writeback);
- while (lcn < buf_size && lcn + bmp_pos < zone_end) {
- byte = buf + (lcn >> 3);
- ntfs_debug("In inner while loop: buf_size %i, "
- "lcn 0x%llx, bmp_pos 0x%llx, "
- "need_writeback %i, byte ofs 0x%x, "
- "*byte 0x%x.", buf_size,
- (unsigned long long)lcn,
- (unsigned long long)bmp_pos,
- need_writeback,
- (unsigned int)(lcn >> 3),
- (unsigned int)*byte);
-
- if (*byte == 0xff) {
- lcn = (lcn + 8) & ~(LCN)7;
- ntfs_debug("Continuing while loop 1.");
- continue;
- }
- bit = 1 << (lcn & 7);
- ntfs_debug("bit 0x%x.", bit);
-
- if (*byte & bit) {
- lcn++;
- ntfs_debug("Continuing while loop 2.");
- continue;
- }
-
- if ((rlpos + 2) * sizeof(*rl) > rlsize) {
- runlist_element *rl2;
- ntfs_debug("Reallocating memory.");
- if (!rl)
- ntfs_debug("First free bit is at LCN "
- "0x%llx.",
- (unsigned long long)
- (lcn + bmp_pos));
- rl2 = ntfs_malloc_nofs(rlsize + (int)PAGE_SIZE);
- if (unlikely(!rl2)) {
- err = -ENOMEM;
- ntfs_error(vol->sb, "Failed to "
- "allocate memory.");
- goto out;
- }
- memcpy(rl2, rl, rlsize);
- ntfs_free(rl);
- rl = rl2;
- rlsize += PAGE_SIZE;
- ntfs_debug("Reallocated memory, rlsize 0x%x.",
- rlsize);
- }
-
- *byte |= bit;
-
- need_writeback = 1;
- ntfs_debug("*byte 0x%x, need_writeback is set.",
- (unsigned int)*byte);
-
- ntfs_debug("Adding run (lcn 0x%llx, len 0x%llx), "
- "prev_lcn 0x%llx, lcn 0x%llx, "
- "bmp_pos 0x%llx, prev_run_len 0x%llx, "
- "rlpos %i.",
- (unsigned long long)(lcn + bmp_pos),
- 1ULL, (unsigned long long)prev_lcn,
- (unsigned long long)lcn,
- (unsigned long long)bmp_pos,
- (unsigned long long)prev_run_len,
- rlpos);
- if (prev_lcn == lcn + bmp_pos - prev_run_len && rlpos) {
- ntfs_debug("Coalescing to run (lcn 0x%llx, "
- "len 0x%llx).",
- (unsigned long long)
- rl[rlpos - 1].lcn,
- (unsigned long long)
- rl[rlpos - 1].length);
- rl[rlpos - 1].length = ++prev_run_len;
- ntfs_debug("Run now (lcn 0x%llx, len 0x%llx), "
- "prev_run_len 0x%llx.",
- (unsigned long long)
- rl[rlpos - 1].lcn,
- (unsigned long long)
- rl[rlpos - 1].length,
- (unsigned long long)
- prev_run_len);
- } else {
- if (likely(rlpos)) {
- ntfs_debug("Adding new run, (previous "
- "run lcn 0x%llx, "
- "len 0x%llx).",
- (unsigned long long)
- rl[rlpos - 1].lcn,
- (unsigned long long)
- rl[rlpos - 1].length);
- rl[rlpos].vcn = rl[rlpos - 1].vcn +
- prev_run_len;
- } else {
- ntfs_debug("Adding new run, is first "
- "run.");
- rl[rlpos].vcn = start_vcn;
- }
- rl[rlpos].lcn = prev_lcn = lcn + bmp_pos;
- rl[rlpos].length = prev_run_len = 1;
- rlpos++;
- }
-
- if (!--clusters) {
- LCN tc;
-
- tc = lcn + bmp_pos + 1;
- ntfs_debug("Done. Updating current zone "
- "position, tc 0x%llx, "
- "search_zone %i.",
- (unsigned long long)tc,
- search_zone);
- switch (search_zone) {
- case 1:
- ntfs_debug("Before checks, "
- "vol->mft_zone_pos "
- "0x%llx.",
- (unsigned long long)
- vol->mft_zone_pos);
- if (tc >= vol->mft_zone_end) {
- vol->mft_zone_pos =
- vol->mft_lcn;
- if (!vol->mft_zone_end)
- vol->mft_zone_pos = 0;
- } else if ((bmp_initial_pos >=
- vol->mft_zone_pos ||
- tc > vol->mft_zone_pos)
- && tc >= vol->mft_lcn)
- vol->mft_zone_pos = tc;
- ntfs_debug("After checks, "
- "vol->mft_zone_pos "
- "0x%llx.",
- (unsigned long long)
- vol->mft_zone_pos);
- break;
- case 2:
- ntfs_debug("Before checks, "
- "vol->data1_zone_pos "
- "0x%llx.",
- (unsigned long long)
- vol->data1_zone_pos);
- if (tc >= vol->nr_clusters)
- vol->data1_zone_pos =
- vol->mft_zone_end;
- else if ((bmp_initial_pos >=
- vol->data1_zone_pos ||
- tc > vol->data1_zone_pos)
- && tc >= vol->mft_zone_end)
- vol->data1_zone_pos = tc;
- ntfs_debug("After checks, "
- "vol->data1_zone_pos "
- "0x%llx.",
- (unsigned long long)
- vol->data1_zone_pos);
- break;
- case 4:
- ntfs_debug("Before checks, "
- "vol->data2_zone_pos "
- "0x%llx.",
- (unsigned long long)
- vol->data2_zone_pos);
- if (tc >= vol->mft_zone_start)
- vol->data2_zone_pos = 0;
- else if (bmp_initial_pos >=
- vol->data2_zone_pos ||
- tc > vol->data2_zone_pos)
- vol->data2_zone_pos = tc;
- ntfs_debug("After checks, "
- "vol->data2_zone_pos "
- "0x%llx.",
- (unsigned long long)
- vol->data2_zone_pos);
- break;
- default:
- BUG();
- }
- ntfs_debug("Finished. Going to out.");
- goto out;
- }
- lcn++;
- }
- bmp_pos += buf_size;
- ntfs_debug("After inner while loop: buf_size 0x%x, lcn "
- "0x%llx, bmp_pos 0x%llx, need_writeback %i.",
- buf_size, (unsigned long long)lcn,
- (unsigned long long)bmp_pos, need_writeback);
- if (bmp_pos < zone_end) {
- ntfs_debug("Continuing outer while loop, "
- "bmp_pos 0x%llx, zone_end 0x%llx.",
- (unsigned long long)bmp_pos,
- (unsigned long long)zone_end);
- continue;
- }
- zone_pass_done:
- ntfs_debug("At zone_pass_done, pass %i.", pass);
- if (pass == 1) {
-
- pass = 2;
- zone_end = zone_start;
- switch (search_zone) {
- case 1:
- zone_start = vol->mft_zone_start;
- break;
- case 2:
- zone_start = vol->mft_zone_end;
- break;
- case 4:
- zone_start = 0;
- break;
- default:
- BUG();
- }
-
- if (zone_end < zone_start)
- zone_end = zone_start;
- bmp_pos = zone_start;
- ntfs_debug("Continuing outer while loop, pass 2, "
- "zone_start 0x%llx, zone_end 0x%llx, "
- "bmp_pos 0x%llx.",
- (unsigned long long)zone_start,
- (unsigned long long)zone_end,
- (unsigned long long)bmp_pos);
- continue;
- }
- done_zones_check:
- ntfs_debug("At done_zones_check, search_zone %i, done_zones "
- "before 0x%x, done_zones after 0x%x.",
- search_zone, done_zones,
- done_zones | search_zone);
- done_zones |= search_zone;
- if (done_zones < 7) {
- ntfs_debug("Switching zone.");
-
- pass = 1;
- switch (search_zone) {
- case 1:
- ntfs_debug("Switching from mft zone to data1 "
- "zone.");
-
- if (rlpos) {
- LCN tc;
- ntfs_debug("Before checks, "
- "vol->mft_zone_pos "
- "0x%llx.",
- (unsigned long long)
- vol->mft_zone_pos);
- tc = rl[rlpos - 1].lcn +
- rl[rlpos - 1].length;
- if (tc >= vol->mft_zone_end) {
- vol->mft_zone_pos =
- vol->mft_lcn;
- if (!vol->mft_zone_end)
- vol->mft_zone_pos = 0;
- } else if ((bmp_initial_pos >=
- vol->mft_zone_pos ||
- tc > vol->mft_zone_pos)
- && tc >= vol->mft_lcn)
- vol->mft_zone_pos = tc;
- ntfs_debug("After checks, "
- "vol->mft_zone_pos "
- "0x%llx.",
- (unsigned long long)
- vol->mft_zone_pos);
- }
-
- switch_to_data1_zone: search_zone = 2;
- zone_start = bmp_initial_pos =
- vol->data1_zone_pos;
- zone_end = vol->nr_clusters;
- if (zone_start == vol->mft_zone_end)
- pass = 2;
- if (zone_start >= zone_end) {
- vol->data1_zone_pos = zone_start =
- vol->mft_zone_end;
- pass = 2;
- }
- break;
- case 2:
- ntfs_debug("Switching from data1 zone to "
- "data2 zone.");
-
- if (rlpos) {
- LCN tc;
- ntfs_debug("Before checks, "
- "vol->data1_zone_pos "
- "0x%llx.",
- (unsigned long long)
- vol->data1_zone_pos);
- tc = rl[rlpos - 1].lcn +
- rl[rlpos - 1].length;
- if (tc >= vol->nr_clusters)
- vol->data1_zone_pos =
- vol->mft_zone_end;
- else if ((bmp_initial_pos >=
- vol->data1_zone_pos ||
- tc > vol->data1_zone_pos)
- && tc >= vol->mft_zone_end)
- vol->data1_zone_pos = tc;
- ntfs_debug("After checks, "
- "vol->data1_zone_pos "
- "0x%llx.",
- (unsigned long long)
- vol->data1_zone_pos);
- }
-
- search_zone = 4;
- zone_start = bmp_initial_pos =
- vol->data2_zone_pos;
- zone_end = vol->mft_zone_start;
- if (!zone_start)
- pass = 2;
- if (zone_start >= zone_end) {
- vol->data2_zone_pos = zone_start =
- bmp_initial_pos = 0;
- pass = 2;
- }
- break;
- case 4:
- ntfs_debug("Switching from data2 zone to "
- "data1 zone.");
-
- if (rlpos) {
- LCN tc;
- ntfs_debug("Before checks, "
- "vol->data2_zone_pos "
- "0x%llx.",
- (unsigned long long)
- vol->data2_zone_pos);
- tc = rl[rlpos - 1].lcn +
- rl[rlpos - 1].length;
- if (tc >= vol->mft_zone_start)
- vol->data2_zone_pos = 0;
- else if (bmp_initial_pos >=
- vol->data2_zone_pos ||
- tc > vol->data2_zone_pos)
- vol->data2_zone_pos = tc;
- ntfs_debug("After checks, "
- "vol->data2_zone_pos "
- "0x%llx.",
- (unsigned long long)
- vol->data2_zone_pos);
- }
-
- goto switch_to_data1_zone;
- default:
- BUG();
- }
- ntfs_debug("After zone switch, search_zone %i, "
- "pass %i, bmp_initial_pos 0x%llx, "
- "zone_start 0x%llx, zone_end 0x%llx.",
- search_zone, pass,
- (unsigned long long)bmp_initial_pos,
- (unsigned long long)zone_start,
- (unsigned long long)zone_end);
- bmp_pos = zone_start;
- if (zone_start == zone_end) {
- ntfs_debug("Empty zone, going to "
- "done_zones_check.");
-
- goto done_zones_check;
- }
- ntfs_debug("Continuing outer while loop.");
- continue;
- }
- ntfs_debug("All zones are finished.");
-
- mft_zone_size = vol->mft_zone_end - vol->mft_zone_start;
- ntfs_debug("vol->mft_zone_start 0x%llx, vol->mft_zone_end "
- "0x%llx, mft_zone_size 0x%llx.",
- (unsigned long long)vol->mft_zone_start,
- (unsigned long long)vol->mft_zone_end,
- (unsigned long long)mft_zone_size);
- if (zone == MFT_ZONE || mft_zone_size <= 0) {
- ntfs_debug("No free clusters left, going to out.");
-
- err = -ENOSPC;
- goto out;
- }
- ntfs_debug("Shrinking mft zone.");
- zone_end = vol->mft_zone_end;
- mft_zone_size >>= 1;
- if (mft_zone_size > 0)
- vol->mft_zone_end = vol->mft_zone_start + mft_zone_size;
- else
- vol->data2_zone_pos = vol->mft_zone_start =
- vol->mft_zone_end = 0;
- if (vol->mft_zone_pos >= vol->mft_zone_end) {
- vol->mft_zone_pos = vol->mft_lcn;
- if (!vol->mft_zone_end)
- vol->mft_zone_pos = 0;
- }
- bmp_pos = zone_start = bmp_initial_pos =
- vol->data1_zone_pos = vol->mft_zone_end;
- search_zone = 2;
- pass = 2;
- done_zones &= ~2;
- ntfs_debug("After shrinking mft zone, mft_zone_size 0x%llx, "
- "vol->mft_zone_start 0x%llx, "
- "vol->mft_zone_end 0x%llx, "
- "vol->mft_zone_pos 0x%llx, search_zone 2, "
- "pass 2, dones_zones 0x%x, zone_start 0x%llx, "
- "zone_end 0x%llx, vol->data1_zone_pos 0x%llx, "
- "continuing outer while loop.",
- (unsigned long long)mft_zone_size,
- (unsigned long long)vol->mft_zone_start,
- (unsigned long long)vol->mft_zone_end,
- (unsigned long long)vol->mft_zone_pos,
- done_zones, (unsigned long long)zone_start,
- (unsigned long long)zone_end,
- (unsigned long long)vol->data1_zone_pos);
- }
- ntfs_debug("After outer while loop.");
- out:
- ntfs_debug("At out.");
-
- if (likely(rl)) {
- rl[rlpos].vcn = rl[rlpos - 1].vcn + rl[rlpos - 1].length;
- rl[rlpos].lcn = is_extension ? LCN_ENOENT : LCN_RL_NOT_MAPPED;
- rl[rlpos].length = 0;
- }
- if (likely(page && !IS_ERR(page))) {
- if (need_writeback) {
- ntfs_debug("Marking page dirty.");
- flush_dcache_page(page);
- set_page_dirty(page);
- need_writeback = 0;
- }
- ntfs_unmap_page(page);
- }
- if (likely(!err)) {
- up_write(&vol->lcnbmp_lock);
- ntfs_debug("Done.");
- return rl;
- }
- ntfs_error(vol->sb, "Failed to allocate clusters, aborting "
- "(error %i).", err);
- if (rl) {
- int err2;
- if (err == -ENOSPC)
- ntfs_debug("Not enough space to complete allocation, "
- "err -ENOSPC, first free lcn 0x%llx, "
- "could allocate up to 0x%llx "
- "clusters.",
- (unsigned long long)rl[0].lcn,
- (unsigned long long)(count - clusters));
-
- ntfs_debug("Attempting rollback...");
- err2 = ntfs_cluster_free_from_rl_nolock(vol, rl);
- if (err2) {
- ntfs_error(vol->sb, "Failed to rollback (error %i). "
- "Leaving inconsistent metadata! "
- "Unmount and run chkdsk.", err2);
- NVolSetErrors(vol);
- }
-
- ntfs_free(rl);
- } else if (err == -ENOSPC)
- ntfs_debug("No space left at all, err = -ENOSPC, first free "
- "lcn = 0x%llx.",
- (long long)vol->data1_zone_pos);
- up_write(&vol->lcnbmp_lock);
- return ERR_PTR(err);
- }
- s64 __ntfs_cluster_free(ntfs_inode *ni, const VCN start_vcn, s64 count,
- ntfs_attr_search_ctx *ctx, const bool is_rollback)
- {
- s64 delta, to_free, total_freed, real_freed;
- ntfs_volume *vol;
- struct inode *lcnbmp_vi;
- runlist_element *rl;
- int err;
- BUG_ON(!ni);
- ntfs_debug("Entering for i_ino 0x%lx, start_vcn 0x%llx, count "
- "0x%llx.%s", ni->mft_no, (unsigned long long)start_vcn,
- (unsigned long long)count,
- is_rollback ? " (rollback)" : "");
- vol = ni->vol;
- lcnbmp_vi = vol->lcnbmp_ino;
- BUG_ON(!lcnbmp_vi);
- BUG_ON(start_vcn < 0);
- BUG_ON(count < -1);
-
- if (likely(!is_rollback))
- down_write(&vol->lcnbmp_lock);
- total_freed = real_freed = 0;
- rl = ntfs_attr_find_vcn_nolock(ni, start_vcn, ctx);
- if (IS_ERR(rl)) {
- if (!is_rollback)
- ntfs_error(vol->sb, "Failed to find first runlist "
- "element (error %li), aborting.",
- PTR_ERR(rl));
- err = PTR_ERR(rl);
- goto err_out;
- }
- if (unlikely(rl->lcn < LCN_HOLE)) {
- if (!is_rollback)
- ntfs_error(vol->sb, "First runlist element has "
- "invalid lcn, aborting.");
- err = -EIO;
- goto err_out;
- }
-
- delta = start_vcn - rl->vcn;
-
- to_free = rl->length - delta;
- if (count >= 0 && to_free > count)
- to_free = count;
- if (likely(rl->lcn >= 0)) {
-
- err = ntfs_bitmap_set_bits_in_run(lcnbmp_vi, rl->lcn + delta,
- to_free, likely(!is_rollback) ? 0 : 1);
- if (unlikely(err)) {
- if (!is_rollback)
- ntfs_error(vol->sb, "Failed to clear first run "
- "(error %i), aborting.", err);
- goto err_out;
- }
-
- real_freed = to_free;
- };
-
- ++rl;
- if (count >= 0)
- count -= to_free;
-
- total_freed = to_free;
-
- for (; rl->length && count != 0; ++rl) {
- if (unlikely(rl->lcn < LCN_HOLE)) {
- VCN vcn;
-
- vcn = rl->vcn;
- rl = ntfs_attr_find_vcn_nolock(ni, vcn, ctx);
- if (IS_ERR(rl)) {
- err = PTR_ERR(rl);
- if (!is_rollback)
- ntfs_error(vol->sb, "Failed to map "
- "runlist fragment or "
- "failed to find "
- "subsequent runlist "
- "element.");
- goto err_out;
- }
- if (unlikely(rl->lcn < LCN_HOLE)) {
- if (!is_rollback)
- ntfs_error(vol->sb, "Runlist element "
- "has invalid lcn "
- "(0x%llx).",
- (unsigned long long)
- rl->lcn);
- err = -EIO;
- goto err_out;
- }
- }
-
- to_free = rl->length;
- if (count >= 0 && to_free > count)
- to_free = count;
- if (likely(rl->lcn >= 0)) {
-
- err = ntfs_bitmap_set_bits_in_run(lcnbmp_vi, rl->lcn,
- to_free, likely(!is_rollback) ? 0 : 1);
- if (unlikely(err)) {
- if (!is_rollback)
- ntfs_error(vol->sb, "Failed to clear "
- "subsequent run.");
- goto err_out;
- }
-
- real_freed += to_free;
- }
-
- if (count >= 0)
- count -= to_free;
-
-
- total_freed += to_free;
- }
- if (likely(!is_rollback))
- up_write(&vol->lcnbmp_lock);
- BUG_ON(count > 0);
-
- ntfs_debug("Done.");
- return real_freed;
- err_out:
- if (is_rollback)
- return err;
-
- if (!real_freed) {
- up_write(&vol->lcnbmp_lock);
- return err;
- }
-
- delta = __ntfs_cluster_free(ni, start_vcn, total_freed, ctx, true);
- if (delta < 0) {
- ntfs_error(vol->sb, "Failed to rollback (error %i). Leaving "
- "inconsistent metadata! Unmount and run "
- "chkdsk.", (int)delta);
- NVolSetErrors(vol);
- }
- up_write(&vol->lcnbmp_lock);
- ntfs_error(vol->sb, "Aborting (error %i).", err);
- return err;
- }
- #endif
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