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fs/ubifs/lprops.c
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// SPDX-License-Identifier: GPL-2.0-only |
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/* * This file is part of UBIFS. * * Copyright (C) 2006-2008 Nokia Corporation. * |
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* Authors: Adrian Hunter * Artem Bityutskiy (Битюцкий Артём) */ /* * This file implements the functions that access LEB properties and their * categories. LEBs are categorized based on the needs of UBIFS, and the * categories are stored as either heaps or lists to provide a fast way of * finding a LEB in a particular category. For example, UBIFS may need to find * an empty LEB for the journal, or a very dirty LEB for garbage collection. */ #include "ubifs.h" /** * get_heap_comp_val - get the LEB properties value for heap comparisons. * @lprops: LEB properties * @cat: LEB category */ static int get_heap_comp_val(struct ubifs_lprops *lprops, int cat) { switch (cat) { case LPROPS_FREE: return lprops->free; case LPROPS_DIRTY_IDX: return lprops->free + lprops->dirty; default: return lprops->dirty; } } /** * move_up_lpt_heap - move a new heap entry up as far as possible. * @c: UBIFS file-system description object * @heap: LEB category heap * @lprops: LEB properties to move * @cat: LEB category * * New entries to a heap are added at the bottom and then moved up until the * parent's value is greater. In the case of LPT's category heaps, the value * is either the amount of free space or the amount of dirty space, depending * on the category. */ static void move_up_lpt_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, struct ubifs_lprops *lprops, int cat) { int val1, val2, hpos; hpos = lprops->hpos; if (!hpos) return; /* Already top of the heap */ val1 = get_heap_comp_val(lprops, cat); /* Compare to parent and, if greater, move up the heap */ do { int ppos = (hpos - 1) / 2; val2 = get_heap_comp_val(heap->arr[ppos], cat); if (val2 >= val1) return; /* Greater than parent so move up */ heap->arr[ppos]->hpos = hpos; heap->arr[hpos] = heap->arr[ppos]; heap->arr[ppos] = lprops; lprops->hpos = ppos; hpos = ppos; } while (hpos); } /** * adjust_lpt_heap - move a changed heap entry up or down the heap. * @c: UBIFS file-system description object * @heap: LEB category heap * @lprops: LEB properties to move * @hpos: heap position of @lprops * @cat: LEB category * * Changed entries in a heap are moved up or down until the parent's value is * greater. In the case of LPT's category heaps, the value is either the amount * of free space or the amount of dirty space, depending on the category. */ static void adjust_lpt_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, struct ubifs_lprops *lprops, int hpos, int cat) { int val1, val2, val3, cpos; val1 = get_heap_comp_val(lprops, cat); /* Compare to parent and, if greater than parent, move up the heap */ if (hpos) { int ppos = (hpos - 1) / 2; val2 = get_heap_comp_val(heap->arr[ppos], cat); if (val1 > val2) { /* Greater than parent so move up */ while (1) { heap->arr[ppos]->hpos = hpos; heap->arr[hpos] = heap->arr[ppos]; heap->arr[ppos] = lprops; lprops->hpos = ppos; hpos = ppos; if (!hpos) return; ppos = (hpos - 1) / 2; val2 = get_heap_comp_val(heap->arr[ppos], cat); if (val1 <= val2) return; /* Still greater than parent so keep going */ } } } |
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/* Not greater than parent, so compare to children */ while (1) { /* Compare to left child */ cpos = hpos * 2 + 1; if (cpos >= heap->cnt) return; val2 = get_heap_comp_val(heap->arr[cpos], cat); if (val1 < val2) { /* Less than left child, so promote biggest child */ if (cpos + 1 < heap->cnt) { val3 = get_heap_comp_val(heap->arr[cpos + 1], cat); if (val3 > val2) cpos += 1; /* Right child is bigger */ } heap->arr[cpos]->hpos = hpos; heap->arr[hpos] = heap->arr[cpos]; heap->arr[cpos] = lprops; lprops->hpos = cpos; hpos = cpos; continue; } /* Compare to right child */ cpos += 1; if (cpos >= heap->cnt) return; val3 = get_heap_comp_val(heap->arr[cpos], cat); if (val1 < val3) { /* Less than right child, so promote right child */ heap->arr[cpos]->hpos = hpos; heap->arr[hpos] = heap->arr[cpos]; heap->arr[cpos] = lprops; lprops->hpos = cpos; hpos = cpos; continue; } return; } } /** * add_to_lpt_heap - add LEB properties to a LEB category heap. * @c: UBIFS file-system description object * @lprops: LEB properties to add * @cat: LEB category * * This function returns %1 if @lprops is added to the heap for LEB category * @cat, otherwise %0 is returned because the heap is full. */ static int add_to_lpt_heap(struct ubifs_info *c, struct ubifs_lprops *lprops, int cat) { struct ubifs_lpt_heap *heap = &c->lpt_heap[cat - 1]; if (heap->cnt >= heap->max_cnt) { const int b = LPT_HEAP_SZ / 2 - 1; int cpos, val1, val2; /* Compare to some other LEB on the bottom of heap */ /* Pick a position kind of randomly */ cpos = (((size_t)lprops >> 4) & b) + b; |
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ubifs_assert(c, cpos >= b); ubifs_assert(c, cpos < LPT_HEAP_SZ); ubifs_assert(c, cpos < heap->cnt); |
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val1 = get_heap_comp_val(lprops, cat); val2 = get_heap_comp_val(heap->arr[cpos], cat); if (val1 > val2) { struct ubifs_lprops *lp; lp = heap->arr[cpos]; lp->flags &= ~LPROPS_CAT_MASK; lp->flags |= LPROPS_UNCAT; list_add(&lp->list, &c->uncat_list); lprops->hpos = cpos; heap->arr[cpos] = lprops; move_up_lpt_heap(c, heap, lprops, cat); dbg_check_heap(c, heap, cat, lprops->hpos); return 1; /* Added to heap */ } dbg_check_heap(c, heap, cat, -1); return 0; /* Not added to heap */ } else { lprops->hpos = heap->cnt++; heap->arr[lprops->hpos] = lprops; move_up_lpt_heap(c, heap, lprops, cat); dbg_check_heap(c, heap, cat, lprops->hpos); return 1; /* Added to heap */ } } /** * remove_from_lpt_heap - remove LEB properties from a LEB category heap. * @c: UBIFS file-system description object * @lprops: LEB properties to remove * @cat: LEB category */ static void remove_from_lpt_heap(struct ubifs_info *c, struct ubifs_lprops *lprops, int cat) { struct ubifs_lpt_heap *heap; int hpos = lprops->hpos; heap = &c->lpt_heap[cat - 1]; |
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ubifs_assert(c, hpos >= 0 && hpos < heap->cnt); ubifs_assert(c, heap->arr[hpos] == lprops); |
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heap->cnt -= 1; if (hpos < heap->cnt) { heap->arr[hpos] = heap->arr[heap->cnt]; heap->arr[hpos]->hpos = hpos; adjust_lpt_heap(c, heap, heap->arr[hpos], hpos, cat); } dbg_check_heap(c, heap, cat, -1); } /** * lpt_heap_replace - replace lprops in a category heap. * @c: UBIFS file-system description object |
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* @new_lprops: LEB properties with which to replace * @cat: LEB category * * During commit it is sometimes necessary to copy a pnode (see dirty_cow_pnode) * and the lprops that the pnode contains. When that happens, references in * the category heaps to those lprops must be updated to point to the new * lprops. This function does that. */ static void lpt_heap_replace(struct ubifs_info *c, |
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struct ubifs_lprops *new_lprops, int cat) { struct ubifs_lpt_heap *heap; int hpos = new_lprops->hpos; heap = &c->lpt_heap[cat - 1]; heap->arr[hpos] = new_lprops; } /** * ubifs_add_to_cat - add LEB properties to a category list or heap. * @c: UBIFS file-system description object * @lprops: LEB properties to add * @cat: LEB category to which to add * * LEB properties are categorized to enable fast find operations. */ void ubifs_add_to_cat(struct ubifs_info *c, struct ubifs_lprops *lprops, int cat) { switch (cat) { case LPROPS_DIRTY: case LPROPS_DIRTY_IDX: case LPROPS_FREE: if (add_to_lpt_heap(c, lprops, cat)) break; |
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/* No more room on heap so make it un-categorized */ |
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cat = LPROPS_UNCAT; |
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fallthrough; |
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case LPROPS_UNCAT: list_add(&lprops->list, &c->uncat_list); break; case LPROPS_EMPTY: list_add(&lprops->list, &c->empty_list); break; case LPROPS_FREEABLE: list_add(&lprops->list, &c->freeable_list); c->freeable_cnt += 1; break; case LPROPS_FRDI_IDX: list_add(&lprops->list, &c->frdi_idx_list); break; default: |
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ubifs_assert(c, 0); |
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} |
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lprops->flags &= ~LPROPS_CAT_MASK; lprops->flags |= cat; |
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c->in_a_category_cnt += 1; |
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ubifs_assert(c, c->in_a_category_cnt <= c->main_lebs); |
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} /** * ubifs_remove_from_cat - remove LEB properties from a category list or heap. * @c: UBIFS file-system description object * @lprops: LEB properties to remove * @cat: LEB category from which to remove * * LEB properties are categorized to enable fast find operations. */ static void ubifs_remove_from_cat(struct ubifs_info *c, struct ubifs_lprops *lprops, int cat) { switch (cat) { case LPROPS_DIRTY: case LPROPS_DIRTY_IDX: case LPROPS_FREE: remove_from_lpt_heap(c, lprops, cat); break; case LPROPS_FREEABLE: c->freeable_cnt -= 1; |
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ubifs_assert(c, c->freeable_cnt >= 0); |
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fallthrough; |
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case LPROPS_UNCAT: case LPROPS_EMPTY: case LPROPS_FRDI_IDX: |
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ubifs_assert(c, !list_empty(&lprops->list)); |
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list_del(&lprops->list); break; default: |
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ubifs_assert(c, 0); |
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} |
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c->in_a_category_cnt -= 1; |
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ubifs_assert(c, c->in_a_category_cnt >= 0); |
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} /** * ubifs_replace_cat - replace lprops in a category list or heap. * @c: UBIFS file-system description object * @old_lprops: LEB properties to replace * @new_lprops: LEB properties with which to replace * * During commit it is sometimes necessary to copy a pnode (see dirty_cow_pnode) * and the lprops that the pnode contains. When that happens, references in * category lists and heaps must be replaced. This function does that. */ void ubifs_replace_cat(struct ubifs_info *c, struct ubifs_lprops *old_lprops, struct ubifs_lprops *new_lprops) { int cat; cat = new_lprops->flags & LPROPS_CAT_MASK; switch (cat) { case LPROPS_DIRTY: case LPROPS_DIRTY_IDX: case LPROPS_FREE: |
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lpt_heap_replace(c, new_lprops, cat); |
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break; case LPROPS_UNCAT: case LPROPS_EMPTY: case LPROPS_FREEABLE: case LPROPS_FRDI_IDX: list_replace(&old_lprops->list, &new_lprops->list); break; default: |
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ubifs_assert(c, 0); |
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} } /** * ubifs_ensure_cat - ensure LEB properties are categorized. * @c: UBIFS file-system description object * @lprops: LEB properties * * A LEB may have fallen off of the bottom of a heap, and ended up as |
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* un-categorized even though it has enough space for us now. If that is the * case this function will put the LEB back onto a heap. |
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*/ void ubifs_ensure_cat(struct ubifs_info *c, struct ubifs_lprops *lprops) { int cat = lprops->flags & LPROPS_CAT_MASK; if (cat != LPROPS_UNCAT) return; cat = ubifs_categorize_lprops(c, lprops); if (cat == LPROPS_UNCAT) return; ubifs_remove_from_cat(c, lprops, LPROPS_UNCAT); ubifs_add_to_cat(c, lprops, cat); } /** * ubifs_categorize_lprops - categorize LEB properties. * @c: UBIFS file-system description object * @lprops: LEB properties to categorize * * LEB properties are categorized to enable fast find operations. This function * returns the LEB category to which the LEB properties belong. Note however * that if the LEB category is stored as a heap and the heap is full, the * LEB properties may have their category changed to %LPROPS_UNCAT. */ int ubifs_categorize_lprops(const struct ubifs_info *c, const struct ubifs_lprops *lprops) { if (lprops->flags & LPROPS_TAKEN) return LPROPS_UNCAT; if (lprops->free == c->leb_size) { |
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ubifs_assert(c, !(lprops->flags & LPROPS_INDEX)); |
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return LPROPS_EMPTY; } if (lprops->free + lprops->dirty == c->leb_size) { if (lprops->flags & LPROPS_INDEX) return LPROPS_FRDI_IDX; else return LPROPS_FREEABLE; } if (lprops->flags & LPROPS_INDEX) { if (lprops->dirty + lprops->free >= c->min_idx_node_sz) return LPROPS_DIRTY_IDX; } else { if (lprops->dirty >= c->dead_wm && lprops->dirty > lprops->free) return LPROPS_DIRTY; if (lprops->free > 0) return LPROPS_FREE; } return LPROPS_UNCAT; } /** * change_category - change LEB properties category. * @c: UBIFS file-system description object |
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* @lprops: LEB properties to re-categorize |
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* * LEB properties are categorized to enable fast find operations. When the LEB |
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* properties change they must be re-categorized. |
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*/ static void change_category(struct ubifs_info *c, struct ubifs_lprops *lprops) { int old_cat = lprops->flags & LPROPS_CAT_MASK; int new_cat = ubifs_categorize_lprops(c, lprops); if (old_cat == new_cat) { |
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struct ubifs_lpt_heap *heap; |
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/* lprops on a heap now must be moved up or down */ if (new_cat < 1 || new_cat > LPROPS_HEAP_CNT) return; /* Not on a heap */ heap = &c->lpt_heap[new_cat - 1]; adjust_lpt_heap(c, heap, lprops, lprops->hpos, new_cat); } else { ubifs_remove_from_cat(c, lprops, old_cat); ubifs_add_to_cat(c, lprops, new_cat); } } /** |
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* ubifs_calc_dark - calculate LEB dark space size. |
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* @c: the UBIFS file-system description object * @spc: amount of free and dirty space in the LEB * |
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* This function calculates and returns amount of dark space in an LEB which * has @spc bytes of free and dirty space. |
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* |
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* UBIFS is trying to account the space which might not be usable, and this * space is called "dark space". For example, if an LEB has only %512 free * bytes, it is dark space, because it cannot fit a large data node. |
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*/ |
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int ubifs_calc_dark(const struct ubifs_info *c, int spc) |
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{ |
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ubifs_assert(c, !(spc & 7)); |
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if (spc < c->dark_wm) return spc; /* * If we have slightly more space then the dark space watermark, we can * anyway safely assume it we'll be able to write a node of the * smallest size there. */ if (spc - c->dark_wm < MIN_WRITE_SZ) return spc - MIN_WRITE_SZ; return c->dark_wm; } /** * is_lprops_dirty - determine if LEB properties are dirty. * @c: the UBIFS file-system description object * @lprops: LEB properties to test */ static int is_lprops_dirty(struct ubifs_info *c, struct ubifs_lprops *lprops) { struct ubifs_pnode *pnode; int pos; pos = (lprops->lnum - c->main_first) & (UBIFS_LPT_FANOUT - 1); pnode = (struct ubifs_pnode *)container_of(lprops - pos, struct ubifs_pnode, lprops[0]); |
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return !test_bit(COW_CNODE, &pnode->flags) && |
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test_bit(DIRTY_CNODE, &pnode->flags); } /** * ubifs_change_lp - change LEB properties. * @c: the UBIFS file-system description object * @lp: LEB properties to change * @free: new free space amount * @dirty: new dirty space amount * @flags: new flags |
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* @idx_gc_cnt: change to the count of @idx_gc list |
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* This function changes LEB properties (@free, @dirty or @flag). However, the * property which has the %LPROPS_NC value is not changed. Returns a pointer to * the updated LEB properties on success and a negative error code on failure. |
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* |
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* Note, the LEB properties may have had to be copied (due to COW) and * consequently the pointer returned may not be the same as the pointer * passed. |
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*/ const struct ubifs_lprops *ubifs_change_lp(struct ubifs_info *c, const struct ubifs_lprops *lp, int free, int dirty, int flags, int idx_gc_cnt) { /* * This is the only function that is allowed to change lprops, so we |
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*/ struct ubifs_lprops *lprops = (struct ubifs_lprops *)lp; dbg_lp("LEB %d, free %d, dirty %d, flags %d", lprops->lnum, free, dirty, flags); |
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ubifs_assert(c, mutex_is_locked(&c->lp_mutex)); ubifs_assert(c, c->lst.empty_lebs >= 0 && |
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c->lst.empty_lebs <= c->main_lebs); |
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ubifs_assert(c, c->freeable_cnt >= 0); ubifs_assert(c, c->freeable_cnt <= c->main_lebs); ubifs_assert(c, c->lst.taken_empty_lebs >= 0); ubifs_assert(c, c->lst.taken_empty_lebs <= c->lst.empty_lebs); ubifs_assert(c, !(c->lst.total_free & 7) && !(c->lst.total_dirty & 7)); ubifs_assert(c, !(c->lst.total_dead & 7) && !(c->lst.total_dark & 7)); ubifs_assert(c, !(c->lst.total_used & 7)); ubifs_assert(c, free == LPROPS_NC || free >= 0); ubifs_assert(c, dirty == LPROPS_NC || dirty >= 0); |
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if (!is_lprops_dirty(c, lprops)) { lprops = ubifs_lpt_lookup_dirty(c, lprops->lnum); if (IS_ERR(lprops)) return lprops; } else |
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ubifs_assert(c, lprops == ubifs_lpt_lookup_dirty(c, lprops->lnum)); |
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ubifs_assert(c, !(lprops->free & 7) && !(lprops->dirty & 7)); |
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spin_lock(&c->space_lock); |
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if ((lprops->flags & LPROPS_TAKEN) && lprops->free == c->leb_size) c->lst.taken_empty_lebs -= 1; if (!(lprops->flags & LPROPS_INDEX)) { int old_spc; old_spc = lprops->free + lprops->dirty; if (old_spc < c->dead_wm) c->lst.total_dead -= old_spc; else |
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c->lst.total_dark -= ubifs_calc_dark(c, old_spc); |
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c->lst.total_used -= c->leb_size - old_spc; } if (free != LPROPS_NC) { free = ALIGN(free, 8); c->lst.total_free += free - lprops->free; /* Increase or decrease empty LEBs counter if needed */ if (free == c->leb_size) { if (lprops->free != c->leb_size) c->lst.empty_lebs += 1; } else if (lprops->free == c->leb_size) c->lst.empty_lebs -= 1; lprops->free = free; } if (dirty != LPROPS_NC) { dirty = ALIGN(dirty, 8); c->lst.total_dirty += dirty - lprops->dirty; lprops->dirty = dirty; } if (flags != LPROPS_NC) { /* Take care about indexing LEBs counter if needed */ if ((lprops->flags & LPROPS_INDEX)) { if (!(flags & LPROPS_INDEX)) c->lst.idx_lebs -= 1; } else if (flags & LPROPS_INDEX) c->lst.idx_lebs += 1; lprops->flags = flags; } if (!(lprops->flags & LPROPS_INDEX)) { int new_spc; new_spc = lprops->free + lprops->dirty; if (new_spc < c->dead_wm) c->lst.total_dead += new_spc; else |
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c->lst.total_dark += ubifs_calc_dark(c, new_spc); |
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c->lst.total_used += c->leb_size - new_spc; } if ((lprops->flags & LPROPS_TAKEN) && lprops->free == c->leb_size) c->lst.taken_empty_lebs += 1; change_category(c, lprops); |
1e51764a3 UBIFS: add new fl... |
616 |
c->idx_gc_cnt += idx_gc_cnt; |
1e51764a3 UBIFS: add new fl... |
617 |
spin_unlock(&c->space_lock); |
1e51764a3 UBIFS: add new fl... |
618 619 |
return lprops; } |
1e51764a3 UBIFS: add new fl... |
620 621 622 |
/** * ubifs_get_lp_stats - get lprops statistics. * @c: UBIFS file-system description object |
ec037dfcc UBIFS: improve fu... |
623 |
* @lst: return statistics |
1e51764a3 UBIFS: add new fl... |
624 |
*/ |
84abf972c UBIFS: add re-mou... |
625 |
void ubifs_get_lp_stats(struct ubifs_info *c, struct ubifs_lp_stats *lst) |
1e51764a3 UBIFS: add new fl... |
626 627 |
{ spin_lock(&c->space_lock); |
84abf972c UBIFS: add re-mou... |
628 |
memcpy(lst, &c->lst, sizeof(struct ubifs_lp_stats)); |
1e51764a3 UBIFS: add new fl... |
629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 |
spin_unlock(&c->space_lock); } /** * ubifs_change_one_lp - change LEB properties. * @c: the UBIFS file-system description object * @lnum: LEB to change properties for * @free: amount of free space * @dirty: amount of dirty space * @flags_set: flags to set * @flags_clean: flags to clean * @idx_gc_cnt: change to the count of idx_gc list * * This function changes properties of LEB @lnum. It is a helper wrapper over * 'ubifs_change_lp()' which hides lprops get/release. The arguments are the * same as in case of 'ubifs_change_lp()'. Returns zero in case of success and * a negative error code in case of failure. */ int ubifs_change_one_lp(struct ubifs_info *c, int lnum, int free, int dirty, int flags_set, int flags_clean, int idx_gc_cnt) { int err = 0, flags; const struct ubifs_lprops *lp; ubifs_get_lprops(c); lp = ubifs_lpt_lookup_dirty(c, lnum); if (IS_ERR(lp)) { err = PTR_ERR(lp); goto out; } flags = (lp->flags | flags_set) & ~flags_clean; lp = ubifs_change_lp(c, lp, free, dirty, flags, idx_gc_cnt); if (IS_ERR(lp)) err = PTR_ERR(lp); out: ubifs_release_lprops(c); |
e4d9b6cbf UBIFS: fix LEB li... |
668 |
if (err) |
235c362bd UBIFS: extend deb... |
669 |
ubifs_err(c, "cannot change properties of LEB %d, error %d", |
e4d9b6cbf UBIFS: fix LEB li... |
670 |
lnum, err); |
1e51764a3 UBIFS: add new fl... |
671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 |
return err; } /** * ubifs_update_one_lp - update LEB properties. * @c: the UBIFS file-system description object * @lnum: LEB to change properties for * @free: amount of free space * @dirty: amount of dirty space to add * @flags_set: flags to set * @flags_clean: flags to clean * * This function is the same as 'ubifs_change_one_lp()' but @dirty is added to * current dirty space, not substitutes it. */ int ubifs_update_one_lp(struct ubifs_info *c, int lnum, int free, int dirty, int flags_set, int flags_clean) { int err = 0, flags; const struct ubifs_lprops *lp; ubifs_get_lprops(c); lp = ubifs_lpt_lookup_dirty(c, lnum); if (IS_ERR(lp)) { err = PTR_ERR(lp); goto out; } flags = (lp->flags | flags_set) & ~flags_clean; lp = ubifs_change_lp(c, lp, free, lp->dirty + dirty, flags, 0); if (IS_ERR(lp)) err = PTR_ERR(lp); out: ubifs_release_lprops(c); |
e4d9b6cbf UBIFS: fix LEB li... |
707 |
if (err) |
235c362bd UBIFS: extend deb... |
708 |
ubifs_err(c, "cannot update properties of LEB %d, error %d", |
e4d9b6cbf UBIFS: fix LEB li... |
709 |
lnum, err); |
1e51764a3 UBIFS: add new fl... |
710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 |
return err; } /** * ubifs_read_one_lp - read LEB properties. * @c: the UBIFS file-system description object * @lnum: LEB to read properties for * @lp: where to store read properties * * This helper function reads properties of a LEB @lnum and stores them in @lp. * Returns zero in case of success and a negative error code in case of * failure. */ int ubifs_read_one_lp(struct ubifs_info *c, int lnum, struct ubifs_lprops *lp) { int err = 0; const struct ubifs_lprops *lpp; ubifs_get_lprops(c); lpp = ubifs_lpt_lookup(c, lnum); if (IS_ERR(lpp)) { err = PTR_ERR(lpp); |
235c362bd UBIFS: extend deb... |
733 |
ubifs_err(c, "cannot read properties of LEB %d, error %d", |
e4d9b6cbf UBIFS: fix LEB li... |
734 |
lnum, err); |
1e51764a3 UBIFS: add new fl... |
735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 |
goto out; } memcpy(lp, lpp, sizeof(struct ubifs_lprops)); out: ubifs_release_lprops(c); return err; } /** * ubifs_fast_find_free - try to find a LEB with free space quickly. * @c: the UBIFS file-system description object * * This function returns LEB properties for a LEB with free space or %NULL if * the function is unable to find a LEB quickly. */ const struct ubifs_lprops *ubifs_fast_find_free(struct ubifs_info *c) { struct ubifs_lprops *lprops; struct ubifs_lpt_heap *heap; |
6eb61d587 ubifs: Pass struc... |
756 |
ubifs_assert(c, mutex_is_locked(&c->lp_mutex)); |
1e51764a3 UBIFS: add new fl... |
757 758 759 760 761 762 |
heap = &c->lpt_heap[LPROPS_FREE - 1]; if (heap->cnt == 0) return NULL; lprops = heap->arr[0]; |
6eb61d587 ubifs: Pass struc... |
763 764 |
ubifs_assert(c, !(lprops->flags & LPROPS_TAKEN)); ubifs_assert(c, !(lprops->flags & LPROPS_INDEX)); |
1e51764a3 UBIFS: add new fl... |
765 766 767 768 769 770 771 772 773 774 775 776 777 |
return lprops; } /** * ubifs_fast_find_empty - try to find an empty LEB quickly. * @c: the UBIFS file-system description object * * This function returns LEB properties for an empty LEB or %NULL if the * function is unable to find an empty LEB quickly. */ const struct ubifs_lprops *ubifs_fast_find_empty(struct ubifs_info *c) { struct ubifs_lprops *lprops; |
6eb61d587 ubifs: Pass struc... |
778 |
ubifs_assert(c, mutex_is_locked(&c->lp_mutex)); |
1e51764a3 UBIFS: add new fl... |
779 780 781 782 783 |
if (list_empty(&c->empty_list)) return NULL; lprops = list_entry(c->empty_list.next, struct ubifs_lprops, list); |
6eb61d587 ubifs: Pass struc... |
784 785 786 |
ubifs_assert(c, !(lprops->flags & LPROPS_TAKEN)); ubifs_assert(c, !(lprops->flags & LPROPS_INDEX)); ubifs_assert(c, lprops->free == c->leb_size); |
1e51764a3 UBIFS: add new fl... |
787 788 789 790 791 792 793 794 795 796 797 798 799 |
return lprops; } /** * ubifs_fast_find_freeable - try to find a freeable LEB quickly. * @c: the UBIFS file-system description object * * This function returns LEB properties for a freeable LEB or %NULL if the * function is unable to find a freeable LEB quickly. */ const struct ubifs_lprops *ubifs_fast_find_freeable(struct ubifs_info *c) { struct ubifs_lprops *lprops; |
6eb61d587 ubifs: Pass struc... |
800 |
ubifs_assert(c, mutex_is_locked(&c->lp_mutex)); |
1e51764a3 UBIFS: add new fl... |
801 802 803 804 805 |
if (list_empty(&c->freeable_list)) return NULL; lprops = list_entry(c->freeable_list.next, struct ubifs_lprops, list); |
6eb61d587 ubifs: Pass struc... |
806 807 808 809 |
ubifs_assert(c, !(lprops->flags & LPROPS_TAKEN)); ubifs_assert(c, !(lprops->flags & LPROPS_INDEX)); ubifs_assert(c, lprops->free + lprops->dirty == c->leb_size); ubifs_assert(c, c->freeable_cnt > 0); |
1e51764a3 UBIFS: add new fl... |
810 811 812 813 814 815 816 817 818 819 820 821 822 |
return lprops; } /** * ubifs_fast_find_frdi_idx - try to find a freeable index LEB quickly. * @c: the UBIFS file-system description object * * This function returns LEB properties for a freeable index LEB or %NULL if the * function is unable to find a freeable index LEB quickly. */ const struct ubifs_lprops *ubifs_fast_find_frdi_idx(struct ubifs_info *c) { struct ubifs_lprops *lprops; |
6eb61d587 ubifs: Pass struc... |
823 |
ubifs_assert(c, mutex_is_locked(&c->lp_mutex)); |
1e51764a3 UBIFS: add new fl... |
824 825 826 827 828 |
if (list_empty(&c->frdi_idx_list)) return NULL; lprops = list_entry(c->frdi_idx_list.next, struct ubifs_lprops, list); |
6eb61d587 ubifs: Pass struc... |
829 830 831 |
ubifs_assert(c, !(lprops->flags & LPROPS_TAKEN)); ubifs_assert(c, (lprops->flags & LPROPS_INDEX)); ubifs_assert(c, lprops->free + lprops->dirty == c->leb_size); |
1e51764a3 UBIFS: add new fl... |
832 833 |
return lprops; } |
f70b7e52a UBIFS: remove Kco... |
834 835 836 |
/* * Everything below is related to debugging. */ |
1e51764a3 UBIFS: add new fl... |
837 838 839 840 841 842 843 844 845 846 847 848 |
/** * dbg_check_cats - check category heaps and lists. * @c: UBIFS file-system description object * * This function returns %0 on success and a negative error code on failure. */ int dbg_check_cats(struct ubifs_info *c) { struct ubifs_lprops *lprops; struct list_head *pos; int i, cat; |
2b1844a8c UBIFS: introduce ... |
849 |
if (!dbg_is_chk_gen(c) && !dbg_is_chk_lprops(c)) |
1e51764a3 UBIFS: add new fl... |
850 851 852 853 |
return 0; list_for_each_entry(lprops, &c->empty_list, list) { if (lprops->free != c->leb_size) { |
235c362bd UBIFS: extend deb... |
854 |
ubifs_err(c, "non-empty LEB %d on empty list (free %d dirty %d flags %d)", |
79fda5179 UBIFS: comply wit... |
855 856 |
lprops->lnum, lprops->free, lprops->dirty, lprops->flags); |
1e51764a3 UBIFS: add new fl... |
857 858 859 |
return -EINVAL; } if (lprops->flags & LPROPS_TAKEN) { |
235c362bd UBIFS: extend deb... |
860 |
ubifs_err(c, "taken LEB %d on empty list (free %d dirty %d flags %d)", |
79fda5179 UBIFS: comply wit... |
861 862 |
lprops->lnum, lprops->free, lprops->dirty, lprops->flags); |
1e51764a3 UBIFS: add new fl... |
863 864 865 866 867 868 869 |
return -EINVAL; } } i = 0; list_for_each_entry(lprops, &c->freeable_list, list) { if (lprops->free + lprops->dirty != c->leb_size) { |
235c362bd UBIFS: extend deb... |
870 |
ubifs_err(c, "non-freeable LEB %d on freeable list (free %d dirty %d flags %d)", |
79fda5179 UBIFS: comply wit... |
871 872 |
lprops->lnum, lprops->free, lprops->dirty, lprops->flags); |
1e51764a3 UBIFS: add new fl... |
873 874 875 |
return -EINVAL; } if (lprops->flags & LPROPS_TAKEN) { |
235c362bd UBIFS: extend deb... |
876 |
ubifs_err(c, "taken LEB %d on freeable list (free %d dirty %d flags %d)", |
79fda5179 UBIFS: comply wit... |
877 878 |
lprops->lnum, lprops->free, lprops->dirty, lprops->flags); |
1e51764a3 UBIFS: add new fl... |
879 880 881 882 883 |
return -EINVAL; } i += 1; } if (i != c->freeable_cnt) { |
235c362bd UBIFS: extend deb... |
884 |
ubifs_err(c, "freeable list count %d expected %d", i, |
1e51764a3 UBIFS: add new fl... |
885 886 887 888 889 890 891 892 |
c->freeable_cnt); return -EINVAL; } i = 0; list_for_each(pos, &c->idx_gc) i += 1; if (i != c->idx_gc_cnt) { |
235c362bd UBIFS: extend deb... |
893 |
ubifs_err(c, "idx_gc list count %d expected %d", i, |
1e51764a3 UBIFS: add new fl... |
894 895 896 897 898 899 |
c->idx_gc_cnt); return -EINVAL; } list_for_each_entry(lprops, &c->frdi_idx_list, list) { if (lprops->free + lprops->dirty != c->leb_size) { |
235c362bd UBIFS: extend deb... |
900 |
ubifs_err(c, "non-freeable LEB %d on frdi_idx list (free %d dirty %d flags %d)", |
79fda5179 UBIFS: comply wit... |
901 902 |
lprops->lnum, lprops->free, lprops->dirty, lprops->flags); |
1e51764a3 UBIFS: add new fl... |
903 904 905 |
return -EINVAL; } if (lprops->flags & LPROPS_TAKEN) { |
235c362bd UBIFS: extend deb... |
906 |
ubifs_err(c, "taken LEB %d on frdi_idx list (free %d dirty %d flags %d)", |
79fda5179 UBIFS: comply wit... |
907 908 |
lprops->lnum, lprops->free, lprops->dirty, lprops->flags); |
1e51764a3 UBIFS: add new fl... |
909 910 911 |
return -EINVAL; } if (!(lprops->flags & LPROPS_INDEX)) { |
235c362bd UBIFS: extend deb... |
912 |
ubifs_err(c, "non-index LEB %d on frdi_idx list (free %d dirty %d flags %d)", |
79fda5179 UBIFS: comply wit... |
913 914 |
lprops->lnum, lprops->free, lprops->dirty, lprops->flags); |
1e51764a3 UBIFS: add new fl... |
915 916 917 918 919 920 921 922 923 924 |
return -EINVAL; } } for (cat = 1; cat <= LPROPS_HEAP_CNT; cat++) { struct ubifs_lpt_heap *heap = &c->lpt_heap[cat - 1]; for (i = 0; i < heap->cnt; i++) { lprops = heap->arr[i]; if (!lprops) { |
235c362bd UBIFS: extend deb... |
925 |
ubifs_err(c, "null ptr in LPT heap cat %d", cat); |
1e51764a3 UBIFS: add new fl... |
926 927 928 |
return -EINVAL; } if (lprops->hpos != i) { |
235c362bd UBIFS: extend deb... |
929 |
ubifs_err(c, "bad ptr in LPT heap cat %d", cat); |
1e51764a3 UBIFS: add new fl... |
930 931 932 |
return -EINVAL; } if (lprops->flags & LPROPS_TAKEN) { |
235c362bd UBIFS: extend deb... |
933 |
ubifs_err(c, "taken LEB in LPT heap cat %d", cat); |
1e51764a3 UBIFS: add new fl... |
934 935 936 937 938 939 940 941 942 943 944 945 |
return -EINVAL; } } } return 0; } void dbg_check_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat, int add_pos) { int i = 0, j, err = 0; |
2b1844a8c UBIFS: introduce ... |
946 |
if (!dbg_is_chk_gen(c) && !dbg_is_chk_lprops(c)) |
1e51764a3 UBIFS: add new fl... |
947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 |
return; for (i = 0; i < heap->cnt; i++) { struct ubifs_lprops *lprops = heap->arr[i]; struct ubifs_lprops *lp; if (i != add_pos) if ((lprops->flags & LPROPS_CAT_MASK) != cat) { err = 1; goto out; } if (lprops->hpos != i) { err = 2; goto out; } lp = ubifs_lpt_lookup(c, lprops->lnum); if (IS_ERR(lp)) { err = 3; goto out; } if (lprops != lp) { |
235c362bd UBIFS: extend deb... |
968 |
ubifs_err(c, "lprops %zx lp %zx lprops->lnum %d lp->lnum %d", |
3668b70fc UBIFS: print less |
969 970 |
(size_t)lprops, (size_t)lp, lprops->lnum, lp->lnum); |
1e51764a3 UBIFS: add new fl... |
971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 |
err = 4; goto out; } for (j = 0; j < i; j++) { lp = heap->arr[j]; if (lp == lprops) { err = 5; goto out; } if (lp->lnum == lprops->lnum) { err = 6; goto out; } } } out: if (err) { |
235c362bd UBIFS: extend deb... |
988 |
ubifs_err(c, "failed cat %d hpos %d err %d", cat, i, err); |
7c46d0ae2 UBIFS: get rid of... |
989 |
dump_stack(); |
edf6be245 UBIFS: rename dum... |
990 |
ubifs_dump_heap(c, heap, cat); |
1e51764a3 UBIFS: add new fl... |
991 992 993 994 |
} } /** |
1e51764a3 UBIFS: add new fl... |
995 996 997 998 |
* scan_check_cb - scan callback. * @c: the UBIFS file-system description object * @lp: LEB properties to scan * @in_tree: whether the LEB properties are in main memory |
34bdc3e25 UBIFS: simplify l... |
999 |
* @lst: lprops statistics to update |
1e51764a3 UBIFS: add new fl... |
1000 1001 1002 1003 1004 1005 1006 1007 |
* * This function returns a code that indicates whether the scan should continue * (%LPT_SCAN_CONTINUE), whether the LEB properties should be added to the tree * in main memory (%LPT_SCAN_ADD), or whether the scan should stop * (%LPT_SCAN_STOP). */ static int scan_check_cb(struct ubifs_info *c, const struct ubifs_lprops *lp, int in_tree, |
34bdc3e25 UBIFS: simplify l... |
1008 |
struct ubifs_lp_stats *lst) |
1e51764a3 UBIFS: add new fl... |
1009 1010 1011 |
{ struct ubifs_scan_leb *sleb; struct ubifs_scan_node *snod; |
cd5f7485b UBIFS: allocate s... |
1012 1013 |
int cat, lnum = lp->lnum, is_idx = 0, used = 0, free, dirty, ret; void *buf = NULL; |
1e51764a3 UBIFS: add new fl... |
1014 1015 1016 1017 1018 |
cat = lp->flags & LPROPS_CAT_MASK; if (cat != LPROPS_UNCAT) { cat = ubifs_categorize_lprops(c, lp); if (cat != (lp->flags & LPROPS_CAT_MASK)) { |
235c362bd UBIFS: extend deb... |
1019 |
ubifs_err(c, "bad LEB category %d expected %d", |
1e51764a3 UBIFS: add new fl... |
1020 |
(lp->flags & LPROPS_CAT_MASK), cat); |
dcc50c8ee UBIFS: simplify e... |
1021 |
return -EINVAL; |
1e51764a3 UBIFS: add new fl... |
1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 |
} } /* Check lp is on its category list (if it has one) */ if (in_tree) { struct list_head *list = NULL; switch (cat) { case LPROPS_EMPTY: list = &c->empty_list; break; case LPROPS_FREEABLE: list = &c->freeable_list; break; case LPROPS_FRDI_IDX: list = &c->frdi_idx_list; break; case LPROPS_UNCAT: list = &c->uncat_list; break; } if (list) { struct ubifs_lprops *lprops; int found = 0; list_for_each_entry(lprops, list, list) { if (lprops == lp) { found = 1; break; } } if (!found) { |
235c362bd UBIFS: extend deb... |
1054 |
ubifs_err(c, "bad LPT list (category %d)", cat); |
dcc50c8ee UBIFS: simplify e... |
1055 |
return -EINVAL; |
1e51764a3 UBIFS: add new fl... |
1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 |
} } } /* Check lp is on its category heap (if it has one) */ if (in_tree && cat > 0 && cat <= LPROPS_HEAP_CNT) { struct ubifs_lpt_heap *heap = &c->lpt_heap[cat - 1]; if ((lp->hpos != -1 && heap->arr[lp->hpos]->lnum != lnum) || lp != heap->arr[lp->hpos]) { |
235c362bd UBIFS: extend deb... |
1066 |
ubifs_err(c, "bad LPT heap (category %d)", cat); |
dcc50c8ee UBIFS: simplify e... |
1067 |
return -EINVAL; |
1e51764a3 UBIFS: add new fl... |
1068 1069 |
} } |
8ca5175b0 UBIFS: improve de... |
1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 |
/* * After an unclean unmount, empty and freeable LEBs * may contain garbage - do not scan them. */ if (lp->free == c->leb_size) { lst->empty_lebs += 1; lst->total_free += c->leb_size; lst->total_dark += ubifs_calc_dark(c, c->leb_size); return LPT_SCAN_CONTINUE; } if (lp->free + lp->dirty == c->leb_size && !(lp->flags & LPROPS_INDEX)) { lst->total_free += lp->free; lst->total_dirty += lp->dirty; lst->total_dark += ubifs_calc_dark(c, c->leb_size); return LPT_SCAN_CONTINUE; } |
88dca4ca5 mm: remove the pg... |
1087 |
buf = __vmalloc(c->leb_size, GFP_NOFS); |
eef19816a ubifs: Fix memory... |
1088 1089 |
if (!buf) return -ENOMEM; |
cd5f7485b UBIFS: allocate s... |
1090 |
sleb = ubifs_scan(c, lnum, 0, buf, 0); |
1e51764a3 UBIFS: add new fl... |
1091 |
if (IS_ERR(sleb)) { |
dcc50c8ee UBIFS: simplify e... |
1092 |
ret = PTR_ERR(sleb); |
12346037a UBIFS: dump more ... |
1093 |
if (ret == -EUCLEAN) { |
edf6be245 UBIFS: rename dum... |
1094 1095 |
ubifs_dump_lprops(c); ubifs_dump_budg(c, &c->bi); |
12346037a UBIFS: dump more ... |
1096 |
} |
dcc50c8ee UBIFS: simplify e... |
1097 |
goto out; |
1e51764a3 UBIFS: add new fl... |
1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 |
} is_idx = -1; list_for_each_entry(snod, &sleb->nodes, list) { int found, level = 0; cond_resched(); if (is_idx == -1) is_idx = (snod->type == UBIFS_IDX_NODE) ? 1 : 0; if (is_idx && snod->type != UBIFS_IDX_NODE) { |
235c362bd UBIFS: extend deb... |
1110 |
ubifs_err(c, "indexing node in data LEB %d:%d", |
1e51764a3 UBIFS: add new fl... |
1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 |
lnum, snod->offs); goto out_destroy; } if (snod->type == UBIFS_IDX_NODE) { struct ubifs_idx_node *idx = snod->node; key_read(c, ubifs_idx_key(c, idx), &snod->key); level = le16_to_cpu(idx->level); } found = ubifs_tnc_has_node(c, &snod->key, level, lnum, snod->offs, is_idx); if (found) { if (found < 0) goto out_destroy; used += ALIGN(snod->len, 8); } } free = c->leb_size - sleb->endpt; dirty = sleb->endpt - used; if (free > c->leb_size || free < 0 || dirty > c->leb_size || dirty < 0) { |
235c362bd UBIFS: extend deb... |
1136 |
ubifs_err(c, "bad calculated accounting for LEB %d: free %d, dirty %d", |
79fda5179 UBIFS: comply wit... |
1137 |
lnum, free, dirty); |
1e51764a3 UBIFS: add new fl... |
1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 |
goto out_destroy; } if (lp->free + lp->dirty == c->leb_size && free + dirty == c->leb_size) if ((is_idx && !(lp->flags & LPROPS_INDEX)) || (!is_idx && free == c->leb_size) || lp->free == c->leb_size) { /* * Empty or freeable LEBs could contain index * nodes from an uncompleted commit due to an * unclean unmount. Or they could be empty for * the same reason. Or it may simply not have been * unmapped. */ free = lp->free; dirty = lp->dirty; is_idx = 0; } if (is_idx && lp->free + lp->dirty == free + dirty && lnum != c->ihead_lnum) { /* * After an unclean unmount, an index LEB could have a different * amount of free space than the value recorded by lprops. That * is because the in-the-gaps method may use free space or * create free space (as a side-effect of using ubi_leb_change * and not writing the whole LEB). The incorrect free space * value is not a problem because the index is only ever * allocated empty LEBs, so there will never be an attempt to * write to the free space at the end of an index LEB - except * by the in-the-gaps method for which it is not a problem. */ free = lp->free; dirty = lp->dirty; } if (lp->free != free || lp->dirty != dirty) goto out_print; if (is_idx && !(lp->flags & LPROPS_INDEX)) { if (free == c->leb_size) /* Free but not unmapped LEB, it's fine */ is_idx = 0; else { |
235c362bd UBIFS: extend deb... |
1183 |
ubifs_err(c, "indexing node without indexing flag"); |
1e51764a3 UBIFS: add new fl... |
1184 1185 1186 1187 1188 |
goto out_print; } } if (!is_idx && (lp->flags & LPROPS_INDEX)) { |
235c362bd UBIFS: extend deb... |
1189 |
ubifs_err(c, "data node with indexing flag"); |
1e51764a3 UBIFS: add new fl... |
1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 |
goto out_print; } if (free == c->leb_size) lst->empty_lebs += 1; if (is_idx) lst->idx_lebs += 1; if (!(lp->flags & LPROPS_INDEX)) lst->total_used += c->leb_size - free - dirty; lst->total_free += free; lst->total_dirty += dirty; if (!(lp->flags & LPROPS_INDEX)) { int spc = free + dirty; if (spc < c->dead_wm) lst->total_dead += spc; else |
be9e62a73 UBIFS: improve lp... |
1210 |
lst->total_dark += ubifs_calc_dark(c, spc); |
1e51764a3 UBIFS: add new fl... |
1211 1212 1213 |
} ubifs_scan_destroy(sleb); |
cd5f7485b UBIFS: allocate s... |
1214 |
vfree(buf); |
dcc50c8ee UBIFS: simplify e... |
1215 |
return LPT_SCAN_CONTINUE; |
1e51764a3 UBIFS: add new fl... |
1216 1217 |
out_print: |
235c362bd UBIFS: extend deb... |
1218 |
ubifs_err(c, "bad accounting of LEB %d: free %d, dirty %d flags %#x, should be free %d, dirty %d", |
1e51764a3 UBIFS: add new fl... |
1219 |
lnum, lp->free, lp->dirty, lp->flags, free, dirty); |
edf6be245 UBIFS: rename dum... |
1220 |
ubifs_dump_leb(c, lnum); |
1e51764a3 UBIFS: add new fl... |
1221 1222 |
out_destroy: ubifs_scan_destroy(sleb); |
dcc50c8ee UBIFS: simplify e... |
1223 |
ret = -EINVAL; |
1e51764a3 UBIFS: add new fl... |
1224 |
out: |
cd5f7485b UBIFS: allocate s... |
1225 |
vfree(buf); |
dcc50c8ee UBIFS: simplify e... |
1226 |
return ret; |
1e51764a3 UBIFS: add new fl... |
1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 |
} /** * dbg_check_lprops - check all LEB properties. * @c: UBIFS file-system description object * * This function checks all LEB properties and makes sure they are all correct. * It returns zero if everything is fine, %-EINVAL if there is an inconsistency * and other negative error codes in case of other errors. This function is * called while the file system is locked (because of commit start), so no * additional locking is required. Note that locking the LPT mutex would cause * a circular lock dependency with the TNC mutex. */ int dbg_check_lprops(struct ubifs_info *c) { int i, err; |
34bdc3e25 UBIFS: simplify l... |
1243 |
struct ubifs_lp_stats lst; |
1e51764a3 UBIFS: add new fl... |
1244 |
|
2b1844a8c UBIFS: introduce ... |
1245 |
if (!dbg_is_chk_lprops(c)) |
1e51764a3 UBIFS: add new fl... |
1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 |
return 0; /* * As we are going to scan the media, the write buffers have to be * synchronized. */ for (i = 0; i < c->jhead_cnt; i++) { err = ubifs_wbuf_sync(&c->jheads[i].wbuf); if (err) return err; } |
34bdc3e25 UBIFS: simplify l... |
1257 |
memset(&lst, 0, sizeof(struct ubifs_lp_stats)); |
1e51764a3 UBIFS: add new fl... |
1258 1259 |
err = ubifs_lpt_scan_nolock(c, c->main_first, c->leb_cnt - 1, (ubifs_lpt_scan_callback)scan_check_cb, |
34bdc3e25 UBIFS: simplify l... |
1260 |
&lst); |
1e51764a3 UBIFS: add new fl... |
1261 1262 |
if (err && err != -ENOSPC) goto out; |
1e51764a3 UBIFS: add new fl... |
1263 |
|
34bdc3e25 UBIFS: simplify l... |
1264 1265 1266 1267 1268 |
if (lst.empty_lebs != c->lst.empty_lebs || lst.idx_lebs != c->lst.idx_lebs || lst.total_free != c->lst.total_free || lst.total_dirty != c->lst.total_dirty || lst.total_used != c->lst.total_used) { |
235c362bd UBIFS: extend deb... |
1269 1270 |
ubifs_err(c, "bad overall accounting"); ubifs_err(c, "calculated: empty_lebs %d, idx_lebs %d, total_free %lld, total_dirty %lld, total_used %lld", |
34bdc3e25 UBIFS: simplify l... |
1271 1272 |
lst.empty_lebs, lst.idx_lebs, lst.total_free, lst.total_dirty, lst.total_used); |
235c362bd UBIFS: extend deb... |
1273 |
ubifs_err(c, "read from lprops: empty_lebs %d, idx_lebs %d, total_free %lld, total_dirty %lld, total_used %lld", |
1e51764a3 UBIFS: add new fl... |
1274 1275 1276 1277 1278 |
c->lst.empty_lebs, c->lst.idx_lebs, c->lst.total_free, c->lst.total_dirty, c->lst.total_used); err = -EINVAL; goto out; } |
34bdc3e25 UBIFS: simplify l... |
1279 1280 |
if (lst.total_dead != c->lst.total_dead || lst.total_dark != c->lst.total_dark) { |
235c362bd UBIFS: extend deb... |
1281 1282 |
ubifs_err(c, "bad dead/dark space accounting"); ubifs_err(c, "calculated: total_dead %lld, total_dark %lld", |
34bdc3e25 UBIFS: simplify l... |
1283 |
lst.total_dead, lst.total_dark); |
235c362bd UBIFS: extend deb... |
1284 |
ubifs_err(c, "read from lprops: total_dead %lld, total_dark %lld", |
1e51764a3 UBIFS: add new fl... |
1285 1286 1287 1288 1289 1290 1291 1292 1293 |
c->lst.total_dead, c->lst.total_dark); err = -EINVAL; goto out; } err = dbg_check_cats(c); out: return err; } |