*
*/
+#include "config.h"
#include <stdint.h>
#include <sys/types.h>
#include <sys/stat.h>
print_resource_track(ctx, _("Pass 5"), &rtrack, ctx->fs->io);
}
-static void e2fsck_discard_blocks(e2fsck_t ctx, io_manager manager,
- blk64_t start, blk64_t count)
+static void e2fsck_discard_blocks(e2fsck_t ctx, blk64_t start,
+ blk64_t count)
{
ext2_filsys fs = ctx->fs;
* not enough to fix the problem, hence it is not safe to run discard
* in this case.
*/
- if (ext2fs_test_changed(ctx->fs))
+ if (ext2fs_test_changed(fs))
ctx->options &= ~E2F_OPT_DISCARD;
if ((ctx->options & E2F_OPT_DISCARD) &&
ctx->options &= ~E2F_OPT_DISCARD;
}
+/*
+ * This will try to discard number 'count' inodes starting at
+ * inode number 'start' within the 'group'. Note that 'start'
+ * is 1-based, it means that we need to adjust it by -1 in this
+ * function to compute right offset in the particular inode table.
+ */
+static void e2fsck_discard_inodes(e2fsck_t ctx, dgrp_t group,
+ ext2_ino_t start, int count)
+{
+ ext2_filsys fs = ctx->fs;
+ blk64_t blk, num;
+
+ /*
+ * Sanity check for 'start'
+ */
+ if ((start < 1) || (start > EXT2_INODES_PER_GROUP(fs->super))) {
+ printf("PROGRAMMING ERROR: Got start %d outside of group %d!"
+ " Disabling discard\n",
+ start, group);
+ ctx->options &= ~E2F_OPT_DISCARD;
+ }
+
+ /*
+ * Do not attempt to discard if E2F_OPT_DISCARD is not set. And also
+ * skip the discard on this group if discard does not zero data.
+ * The reason is that if the inode table is not zeroed discard would
+ * no help us since we need to zero it anyway, or if the inode table
+ * is zeroed then the read after discard would not be deterministic
+ * anyway and we would not be able to assume that this inode table
+ * was zeroed anymore so we would have to zero it again, which does
+ * not really make sense.
+ */
+ if (!(ctx->options & E2F_OPT_DISCARD) ||
+ !io_channel_discard_zeroes_data(fs->io))
+ return;
+
+ /*
+ * Start is inode number within the group which starts
+ * counting from 1, so we need to adjust it.
+ */
+ start -= 1;
+
+ /*
+ * We can discard only blocks containing only unused
+ * inodes in the table.
+ */
+ blk = DIV_ROUND_UP(start,
+ EXT2_INODES_PER_BLOCK(fs->super));
+ count -= (blk * EXT2_INODES_PER_BLOCK(fs->super) - start);
+ blk += ext2fs_inode_table_loc(fs, group);
+ num = count / EXT2_INODES_PER_BLOCK(fs->super);
+
+ if (num > 0)
+ e2fsck_discard_blocks(ctx, blk, num);
+}
+
#define NO_BLK ((blk64_t) -1)
static void print_bitmap_problem(e2fsck_t ctx, int problem,
{
ext2_filsys fs = ctx->fs;
blk64_t i;
- int *free_array;
+ unsigned int *free_array;
int group = 0;
- int blocks = 0;
+ unsigned int blocks = 0;
blk64_t free_blocks = 0;
blk64_t first_free = ext2fs_blocks_count(fs->super);
- int group_free = 0;
+ unsigned int group_free = 0;
int actual, bitmap;
struct problem_context pctx;
int problem, save_problem, fixit, had_problem;
int cmp_block = 0;
int redo_flag = 0;
blk64_t super_blk, old_desc_blk, new_desc_blk;
- io_manager manager = ctx->fs->io->manager;
clear_problem_context(&pctx);
- free_array = (int *) e2fsck_allocate_memory(ctx,
- fs->group_desc_count * sizeof(int), "free block count array");
+ free_array = (unsigned int *) e2fsck_allocate_memory(ctx,
+ fs->group_desc_count * sizeof(unsigned int), "free block count array");
if ((B2C(fs->super->s_first_data_block) <
ext2fs_get_block_bitmap_start2(ctx->block_found_map)) ||
count = 0;
cmp_block = fs->super->s_clusters_per_group;
if (group == (int)fs->group_desc_count - 1)
- cmp_block =
- EXT2FS_NUM_B2C(fs,
- ext2fs_blocks_count(fs->super) % fs->super->s_blocks_per_group);
+ cmp_block = EXT2FS_NUM_B2C(fs,
+ ext2fs_group_blocks_count(fs, group));
}
bitmap = 0;
else
bitmap = ext2fs_fast_test_block_bitmap2(fs->block_map, i);
- if (actual == bitmap)
+ if (!actual == !bitmap)
goto do_counts;
if (!actual && bitmap) {
ctx->options &= ~E2F_OPT_DISCARD;
do_counts:
- if (!bitmap && (!skip_group || csum_flag)) {
+ if (!bitmap) {
group_free++;
free_blocks++;
if (first_free > i)
first_free = i;
- } else {
- if ((i > first_free) &&
- (ctx->options & E2F_OPT_DISCARD)) {
- e2fsck_discard_blocks(ctx, manager, first_free,
- (i - first_free));
- }
+ } else if (i > first_free) {
+ e2fsck_discard_blocks(ctx, first_free,
+ (i - first_free));
first_free = ext2fs_blocks_count(fs->super);
}
blocks ++;
if ((blocks == fs->super->s_clusters_per_group) ||
(EXT2FS_B2C(fs, i) ==
EXT2FS_B2C(fs, ext2fs_blocks_count(fs->super)-1))) {
+ /*
+ * If the last block of this group is free, then we can
+ * discard it as well.
+ */
+ if (!bitmap && i >= first_free)
+ e2fsck_discard_blocks(ctx, first_free,
+ (i - first_free) + 1);
+ first_free = ext2fs_blocks_count(fs->super);
+
free_array[group] = group_free;
group ++;
blocks = 0;
if (fix_problem(ctx, PR_5_FREE_BLOCK_COUNT, &pctx)) {
ext2fs_free_blocks_count_set(fs->super, free_blocks);
ext2fs_mark_super_dirty(fs);
- } else
- ext2fs_unmark_valid(fs);
+ }
}
errout:
ext2fs_free_mem(&free_array);
int dirs_count = 0;
int group = 0;
unsigned int inodes = 0;
- int *free_array;
- int *dir_array;
+ ext2_ino_t *free_array;
+ ext2_ino_t *dir_array;
int actual, bitmap;
errcode_t retval;
struct problem_context pctx;
int csum_flag;
int skip_group = 0;
int redo_flag = 0;
- io_manager manager = ctx->fs->io->manager;
+ ext2_ino_t first_free = fs->super->s_inodes_per_group + 1;
clear_problem_context(&pctx);
- free_array = (int *) e2fsck_allocate_memory(ctx,
- fs->group_desc_count * sizeof(int), "free inode count array");
+ free_array = (ext2_ino_t *) e2fsck_allocate_memory(ctx,
+ fs->group_desc_count * sizeof(ext2_ino_t), "free inode count array");
- dir_array = (int *) e2fsck_allocate_memory(ctx,
- fs->group_desc_count * sizeof(int), "directory count array");
+ dir_array = (ext2_ino_t *) e2fsck_allocate_memory(ctx,
+ fs->group_desc_count * sizeof(ext2_ino_t), "directory count array");
if ((1 < ext2fs_get_inode_bitmap_start2(ctx->inode_used_map)) ||
(fs->super->s_inodes_count >
* are 0, count the free inode,
* skip the current block group.
*/
+ first_free = 1;
inodes = fs->super->s_inodes_per_group - 1;
group_free = inodes;
free_inodes += inodes;
bitmap = actual;
else if (!skip_group)
bitmap = ext2fs_fast_test_inode_bitmap2(fs->inode_map, i);
- if (actual == bitmap)
+ if (!actual == !bitmap)
goto do_counts;
if (!actual && bitmap) {
ctx->options &= ~E2F_OPT_DISCARD;
do_counts:
+ inodes++;
if (bitmap) {
if (ext2fs_test_inode_bitmap2(ctx->inode_dir_map, i))
dirs_count++;
- } else if (!skip_group || csum_flag) {
+ if (inodes > first_free) {
+ e2fsck_discard_inodes(ctx, group, first_free,
+ inodes - first_free);
+ first_free = fs->super->s_inodes_per_group + 1;
+ }
+ } else {
group_free++;
free_inodes++;
+ if (first_free > inodes)
+ first_free = inodes;
}
- inodes++;
if ((inodes == fs->super->s_inodes_per_group) ||
(i == fs->super->s_inodes_count)) {
-
- free_array[group] = group_free;
- dir_array[group] = dirs_count;
-
- /* Discard inode table */
- if (ctx->options & E2F_OPT_DISCARD) {
- blk64_t used_blks, blk, num;
-
- used_blks = DIV_ROUND_UP(
- (EXT2_INODES_PER_GROUP(fs->super) -
- group_free),
- EXT2_INODES_PER_BLOCK(fs->super));
-
- blk = ext2fs_inode_table_loc(fs, group) +
- used_blks;
- num = fs->inode_blocks_per_group -
- used_blks;
- e2fsck_discard_blocks(ctx, manager, blk, num);
- }
-
+ /*
+ * If the last inode is free, we can discard it as well.
+ */
+ if (!bitmap && inodes >= first_free)
+ e2fsck_discard_inodes(ctx, group, first_free,
+ inodes - first_free + 1);
/*
* If discard zeroes data and the group inode table
* was not zeroed yet, set itable as zeroed
*/
if ((ctx->options & E2F_OPT_DISCARD) &&
- (io_channel_discard_zeroes_data(fs->io)) &&
+ io_channel_discard_zeroes_data(fs->io) &&
!(ext2fs_bg_flags_test(fs, group,
- EXT2_BG_INODE_ZEROED))) {
+ EXT2_BG_INODE_ZEROED))) {
ext2fs_bg_flags_set(fs, group,
EXT2_BG_INODE_ZEROED);
ext2fs_group_desc_csum_set(fs, group);
}
+ first_free = fs->super->s_inodes_per_group + 1;
+ free_array[group] = group_free;
+ dir_array[group] = dirs_count;
group ++;
inodes = 0;
skip_group = 0;
if (fix_problem(ctx, PR_5_FREE_INODE_COUNT, &pctx)) {
fs->super->s_free_inodes_count = free_inodes;
ext2fs_mark_super_dirty(fs);
- } else
- ext2fs_unmark_valid(fs);
+ }
}
errout:
ext2fs_free_mem(&free_array);
git://git.whamcloud.com / tools / e2fsprogs.git / blobdiff