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path: root/fs/ubifs/super.c
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-rw-r--r--fs/ubifs/super.c83
1 files changed, 52 insertions, 31 deletions
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 6ddd9973e681..6db0bdaa9f74 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -375,7 +375,7 @@ out:
ubifs_release_dirty_inode_budget(c, ui);
else {
/* We've deleted something - clean the "no space" flags */
- c->nospace = c->nospace_rp = 0;
+ c->bi.nospace = c->bi.nospace_rp = 0;
smp_wmb();
}
done:
@@ -694,11 +694,11 @@ static int init_constants_sb(struct ubifs_info *c)
* be compressed and direntries are of the maximum size.
*
* Note, data, which may be stored in inodes is budgeted separately, so
- * it is not included into 'c->inode_budget'.
+ * it is not included into 'c->bi.inode_budget'.
*/
- c->page_budget = UBIFS_MAX_DATA_NODE_SZ * UBIFS_BLOCKS_PER_PAGE;
- c->inode_budget = UBIFS_INO_NODE_SZ;
- c->dent_budget = UBIFS_MAX_DENT_NODE_SZ;
+ c->bi.page_budget = UBIFS_MAX_DATA_NODE_SZ * UBIFS_BLOCKS_PER_PAGE;
+ c->bi.inode_budget = UBIFS_INO_NODE_SZ;
+ c->bi.dent_budget = UBIFS_MAX_DENT_NODE_SZ;
/*
* When the amount of flash space used by buds becomes
@@ -742,7 +742,7 @@ static void init_constants_master(struct ubifs_info *c)
{
long long tmp64;
- c->min_idx_lebs = ubifs_calc_min_idx_lebs(c);
+ c->bi.min_idx_lebs = ubifs_calc_min_idx_lebs(c);
c->report_rp_size = ubifs_reported_space(c, c->rp_size);
/*
@@ -1144,8 +1144,8 @@ static int check_free_space(struct ubifs_info *c)
{
ubifs_assert(c->dark_wm > 0);
if (c->lst.total_free + c->lst.total_dirty < c->dark_wm) {
- ubifs_err("insufficient free space to mount in read/write mode");
- dbg_dump_budg(c);
+ ubifs_err("insufficient free space to mount in R/W mode");
+ dbg_dump_budg(c, &c->bi);
dbg_dump_lprops(c);
return -ENOSPC;
}
@@ -1257,12 +1257,12 @@ static int mount_ubifs(struct ubifs_info *c)
goto out_free;
}
+ err = alloc_wbufs(c);
+ if (err)
+ goto out_cbuf;
+
sprintf(c->bgt_name, BGT_NAME_PATTERN, c->vi.ubi_num, c->vi.vol_id);
if (!c->ro_mount) {
- err = alloc_wbufs(c);
- if (err)
- goto out_cbuf;
-
/* Create background thread */
c->bgt = kthread_create(ubifs_bg_thread, c, "%s", c->bgt_name);
if (IS_ERR(c->bgt)) {
@@ -1304,7 +1304,7 @@ static int mount_ubifs(struct ubifs_info *c)
if (err)
goto out_lpt;
- err = dbg_check_idx_size(c, c->old_idx_sz);
+ err = dbg_check_idx_size(c, c->bi.old_idx_sz);
if (err)
goto out_lpt;
@@ -1313,7 +1313,7 @@ static int mount_ubifs(struct ubifs_info *c)
goto out_journal;
/* Calculate 'min_idx_lebs' after journal replay */
- c->min_idx_lebs = ubifs_calc_min_idx_lebs(c);
+ c->bi.min_idx_lebs = ubifs_calc_min_idx_lebs(c);
err = ubifs_mount_orphans(c, c->need_recovery, c->ro_mount);
if (err)
@@ -1396,6 +1396,12 @@ static int mount_ubifs(struct ubifs_info *c)
} else
ubifs_assert(c->lst.taken_empty_lebs > 0);
+ if (!c->ro_mount && c->space_fixup) {
+ err = ubifs_fixup_free_space(c);
+ if (err)
+ goto out_infos;
+ }
+
err = dbg_check_filesystem(c);
if (err)
goto out_infos;
@@ -1442,7 +1448,8 @@ static int mount_ubifs(struct ubifs_info *c)
c->main_lebs, c->main_first, c->leb_cnt - 1);
dbg_msg("index LEBs: %d", c->lst.idx_lebs);
dbg_msg("total index bytes: %lld (%lld KiB, %lld MiB)",
- c->old_idx_sz, c->old_idx_sz >> 10, c->old_idx_sz >> 20);
+ c->bi.old_idx_sz, c->bi.old_idx_sz >> 10,
+ c->bi.old_idx_sz >> 20);
dbg_msg("key hash type: %d", c->key_hash_type);
dbg_msg("tree fanout: %d", c->fanout);
dbg_msg("reserved GC LEB: %d", c->gc_lnum);
@@ -1456,7 +1463,7 @@ static int mount_ubifs(struct ubifs_info *c)
dbg_msg("node sizes: ref %zu, cmt. start %zu, orph %zu",
UBIFS_REF_NODE_SZ, UBIFS_CS_NODE_SZ, UBIFS_ORPH_NODE_SZ);
dbg_msg("max. node sizes: data %zu, inode %zu dentry %zu, idx %d",
- UBIFS_MAX_DATA_NODE_SZ, UBIFS_MAX_INO_NODE_SZ,
+ UBIFS_MAX_DATA_NODE_SZ, UBIFS_MAX_INO_NODE_SZ,
UBIFS_MAX_DENT_NODE_SZ, ubifs_idx_node_sz(c, c->fanout));
dbg_msg("dead watermark: %d", c->dead_wm);
dbg_msg("dark watermark: %d", c->dark_wm);
@@ -1568,6 +1575,7 @@ static int ubifs_remount_rw(struct ubifs_info *c)
mutex_lock(&c->umount_mutex);
dbg_save_space_info(c);
c->remounting_rw = 1;
+ c->ro_mount = 0;
err = check_free_space(c);
if (err)
@@ -1583,6 +1591,7 @@ static int ubifs_remount_rw(struct ubifs_info *c)
}
sup->leb_cnt = cpu_to_le32(c->leb_cnt);
err = ubifs_write_sb_node(c, sup);
+ kfree(sup);
if (err)
goto out;
}
@@ -1630,12 +1639,6 @@ static int ubifs_remount_rw(struct ubifs_info *c)
if (err)
goto out;
- err = alloc_wbufs(c);
- if (err)
- goto out;
-
- ubifs_create_buds_lists(c);
-
/* Create background thread */
c->bgt = kthread_create(ubifs_bg_thread, c, "%s", c->bgt_name);
if (IS_ERR(c->bgt)) {
@@ -1670,19 +1673,37 @@ static int ubifs_remount_rw(struct ubifs_info *c)
if (err)
goto out;
+ dbg_gen("re-mounted read-write");
+ c->remounting_rw = 0;
+
if (c->need_recovery) {
c->need_recovery = 0;
ubifs_msg("deferred recovery completed");
+ } else {
+ /*
+ * Do not run the debugging space check if the were doing
+ * recovery, because when we saved the information we had the
+ * file-system in a state where the TNC and lprops has been
+ * modified in memory, but all the I/O operations (including a
+ * commit) were deferred. So the file-system was in
+ * "non-committed" state. Now the file-system is in committed
+ * state, and of course the amount of free space will change
+ * because, for example, the old index size was imprecise.
+ */
+ err = dbg_check_space_info(c);
+ }
+
+ if (c->space_fixup) {
+ err = ubifs_fixup_free_space(c);
+ if (err)
+ goto out;
}
- dbg_gen("re-mounted read-write");
- c->ro_mount = 0;
- c->remounting_rw = 0;
- err = dbg_check_space_info(c);
mutex_unlock(&c->umount_mutex);
return err;
out:
+ c->ro_mount = 1;
vfree(c->orph_buf);
c->orph_buf = NULL;
if (c->bgt) {
@@ -1732,7 +1753,6 @@ static void ubifs_remount_ro(struct ubifs_info *c)
if (err)
ubifs_ro_mode(c, err);
- free_wbufs(c);
vfree(c->orph_buf);
c->orph_buf = NULL;
kfree(c->write_reserve_buf);
@@ -1760,10 +1780,11 @@ static void ubifs_put_super(struct super_block *sb)
* of the media. For example, there will be dirty inodes if we failed
* to write them back because of I/O errors.
*/
- ubifs_assert(atomic_long_read(&c->dirty_pg_cnt) == 0);
- ubifs_assert(c->budg_idx_growth == 0);
- ubifs_assert(c->budg_dd_growth == 0);
- ubifs_assert(c->budg_data_growth == 0);
+ if (!c->ro_error) {
+ ubifs_assert(c->bi.idx_growth == 0);
+ ubifs_assert(c->bi.dd_growth == 0);
+ ubifs_assert(c->bi.data_growth == 0);
+ }
/*
* The 'c->umount_lock' prevents races between UBIFS memory shrinker
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.