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Diffstat (limited to 'fs/ubifs/super.c')
-rw-r--r--fs/ubifs/super.c190
1 files changed, 90 insertions, 100 deletions
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 1c766c39c03..3904c8574ef 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -49,7 +49,8 @@ struct kmem_cache *ubifs_inode_slab;
/* UBIFS TNC shrinker description */
static struct shrinker ubifs_shrinker_info = {
- .shrink = ubifs_shrinker,
+ .scan_objects = ubifs_shrink_scan,
+ .count_objects = ubifs_shrink_count,
.seeks = DEFAULT_SEEKS,
};
@@ -89,9 +90,8 @@ static int validate_inode(struct ubifs_info *c, const struct inode *inode)
return 5;
if (!ubifs_compr_present(ui->compr_type)) {
- ubifs_warn("inode %lu uses '%s' compression, but it was not "
- "compiled in", inode->i_ino,
- ubifs_compr_name(ui->compr_type));
+ ubifs_warn("inode %lu uses '%s' compression, but it was not compiled in",
+ inode->i_ino, ubifs_compr_name(ui->compr_type));
}
err = dbg_check_dir(c, inode);
@@ -130,8 +130,8 @@ struct inode *ubifs_iget(struct super_block *sb, unsigned long inum)
inode->i_flags |= (S_NOCMTIME | S_NOATIME);
set_nlink(inode, le32_to_cpu(ino->nlink));
- inode->i_uid = le32_to_cpu(ino->uid);
- inode->i_gid = le32_to_cpu(ino->gid);
+ i_uid_write(inode, le32_to_cpu(ino->uid));
+ i_gid_write(inode, le32_to_cpu(ino->gid));
inode->i_atime.tv_sec = (int64_t)le64_to_cpu(ino->atime_sec);
inode->i_atime.tv_nsec = le32_to_cpu(ino->atime_nsec);
inode->i_mtime.tv_sec = (int64_t)le64_to_cpu(ino->mtime_sec);
@@ -303,7 +303,7 @@ static int ubifs_write_inode(struct inode *inode, struct writeback_control *wbc)
mutex_lock(&ui->ui_mutex);
/*
* Due to races between write-back forced by budgeting
- * (see 'sync_some_inodes()') and pdflush write-back, the inode may
+ * (see 'sync_some_inodes()') and background write-back, the inode may
* have already been synchronized, do not do this again. This might
* also happen if it was synchronized in an VFS operation, e.g.
* 'ubifs_link()'.
@@ -351,7 +351,7 @@ static void ubifs_evict_inode(struct inode *inode)
dbg_gen("inode %lu, mode %#x", inode->i_ino, (int)inode->i_mode);
ubifs_assert(!atomic_read(&inode->i_count));
- truncate_inode_pages(&inode->i_data, 0);
+ truncate_inode_pages_final(&inode->i_data);
if (inode->i_nlink)
goto done;
@@ -873,26 +873,10 @@ static void free_orphans(struct ubifs_info *c)
*/
static void free_buds(struct ubifs_info *c)
{
- struct rb_node *this = c->buds.rb_node;
- struct ubifs_bud *bud;
-
- while (this) {
- if (this->rb_left)
- this = this->rb_left;
- else if (this->rb_right)
- this = this->rb_right;
- else {
- bud = rb_entry(this, struct ubifs_bud, rb);
- this = rb_parent(this);
- if (this) {
- if (this->rb_left == &bud->rb)
- this->rb_left = NULL;
- else
- this->rb_right = NULL;
- }
- kfree(bud);
- }
- }
+ struct ubifs_bud *bud, *n;
+
+ rbtree_postorder_for_each_entry_safe(bud, n, &c->buds, rb)
+ kfree(bud);
}
/**
@@ -1061,8 +1045,8 @@ static int ubifs_parse_options(struct ubifs_info *c, char *options,
flag = parse_standard_option(p);
if (!flag) {
- ubifs_err("unrecognized mount option \"%s\" "
- "or missing value", p);
+ ubifs_err("unrecognized mount option \"%s\" or missing value",
+ p);
return -EINVAL;
}
sb->s_flags |= flag;
@@ -1124,8 +1108,8 @@ again:
}
/* Just disable bulk-read */
- ubifs_warn("Cannot allocate %d bytes of memory for bulk-read, "
- "disabling it", c->max_bu_buf_len);
+ ubifs_warn("cannot allocate %d bytes of memory for bulk-read, disabling it",
+ c->max_bu_buf_len);
c->mount_opts.bulk_read = 1;
c->bulk_read = 0;
return;
@@ -1157,17 +1141,17 @@ static int check_free_space(struct ubifs_info *c)
*
* This function mounts UBIFS file system. Returns zero in case of success and
* a negative error code in case of failure.
- *
- * Note, the function does not de-allocate resources it it fails half way
- * through, and the caller has to do this instead.
*/
static int mount_ubifs(struct ubifs_info *c)
{
int err;
- long long x;
+ long long x, y;
size_t sz;
c->ro_mount = !!(c->vfs_sb->s_flags & MS_RDONLY);
+ /* Suppress error messages while probing if MS_SILENT is set */
+ c->probing = !!(c->vfs_sb->s_flags & MS_SILENT);
+
err = init_constants_early(c);
if (err)
return err;
@@ -1233,6 +1217,8 @@ static int mount_ubifs(struct ubifs_info *c)
if (err)
goto out_free;
+ c->probing = 0;
+
/*
* Make sure the compressor which is set as default in the superblock
* or overridden by mount options is actually compiled in.
@@ -1414,75 +1400,69 @@ static int mount_ubifs(struct ubifs_info *c)
c->mounting = 0;
- ubifs_msg("mounted UBI device %d, volume %d, name \"%s\"",
- c->vi.ubi_num, c->vi.vol_id, c->vi.name);
- if (c->ro_mount)
- ubifs_msg("mounted read-only");
+ ubifs_msg("mounted UBI device %d, volume %d, name \"%s\"%s",
+ c->vi.ubi_num, c->vi.vol_id, c->vi.name,
+ c->ro_mount ? ", R/O mode" : "");
x = (long long)c->main_lebs * c->leb_size;
- ubifs_msg("file system size: %lld bytes (%lld KiB, %lld MiB, %d "
- "LEBs)", x, x >> 10, x >> 20, c->main_lebs);
- x = (long long)c->log_lebs * c->leb_size + c->max_bud_bytes;
- ubifs_msg("journal size: %lld bytes (%lld KiB, %lld MiB, %d "
- "LEBs)", x, x >> 10, x >> 20, c->log_lebs + c->max_bud_cnt);
- ubifs_msg("media format: w%d/r%d (latest is w%d/r%d)",
+ y = (long long)c->log_lebs * c->leb_size + c->max_bud_bytes;
+ ubifs_msg("LEB size: %d bytes (%d KiB), min./max. I/O unit sizes: %d bytes/%d bytes",
+ c->leb_size, c->leb_size >> 10, c->min_io_size,
+ c->max_write_size);
+ ubifs_msg("FS size: %lld bytes (%lld MiB, %d LEBs), journal size %lld bytes (%lld MiB, %d LEBs)",
+ x, x >> 20, c->main_lebs,
+ y, y >> 20, c->log_lebs + c->max_bud_cnt);
+ ubifs_msg("reserved for root: %llu bytes (%llu KiB)",
+ c->report_rp_size, c->report_rp_size >> 10);
+ ubifs_msg("media format: w%d/r%d (latest is w%d/r%d), UUID %pUB%s",
c->fmt_version, c->ro_compat_version,
- UBIFS_FORMAT_VERSION, UBIFS_RO_COMPAT_VERSION);
- ubifs_msg("default compressor: %s", ubifs_compr_name(c->default_compr));
- ubifs_msg("reserved for root: %llu bytes (%llu KiB)",
- c->report_rp_size, c->report_rp_size >> 10);
-
- dbg_msg("compiled on: " __DATE__ " at " __TIME__);
- dbg_msg("min. I/O unit size: %d bytes", c->min_io_size);
- dbg_msg("max. write size: %d bytes", c->max_write_size);
- dbg_msg("LEB size: %d bytes (%d KiB)",
- c->leb_size, c->leb_size >> 10);
- dbg_msg("data journal heads: %d",
+ UBIFS_FORMAT_VERSION, UBIFS_RO_COMPAT_VERSION, c->uuid,
+ c->big_lpt ? ", big LPT model" : ", small LPT model");
+
+ dbg_gen("default compressor: %s", ubifs_compr_name(c->default_compr));
+ dbg_gen("data journal heads: %d",
c->jhead_cnt - NONDATA_JHEADS_CNT);
- dbg_msg("UUID: %pUB", c->uuid);
- dbg_msg("big_lpt %d", c->big_lpt);
- dbg_msg("log LEBs: %d (%d - %d)",
+ dbg_gen("log LEBs: %d (%d - %d)",
c->log_lebs, UBIFS_LOG_LNUM, c->log_last);
- dbg_msg("LPT area LEBs: %d (%d - %d)",
+ dbg_gen("LPT area LEBs: %d (%d - %d)",
c->lpt_lebs, c->lpt_first, c->lpt_last);
- dbg_msg("orphan area LEBs: %d (%d - %d)",
+ dbg_gen("orphan area LEBs: %d (%d - %d)",
c->orph_lebs, c->orph_first, c->orph_last);
- dbg_msg("main area LEBs: %d (%d - %d)",
+ dbg_gen("main area LEBs: %d (%d - %d)",
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)",
+ dbg_gen("index LEBs: %d", c->lst.idx_lebs);
+ dbg_gen("total index bytes: %lld (%lld KiB, %lld MiB)",
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);
- dbg_msg("first main LEB: %d", c->main_first);
- dbg_msg("max. znode size %d", c->max_znode_sz);
- dbg_msg("max. index node size %d", c->max_idx_node_sz);
- dbg_msg("node sizes: data %zu, inode %zu, dentry %zu",
+ dbg_gen("key hash type: %d", c->key_hash_type);
+ dbg_gen("tree fanout: %d", c->fanout);
+ dbg_gen("reserved GC LEB: %d", c->gc_lnum);
+ dbg_gen("max. znode size %d", c->max_znode_sz);
+ dbg_gen("max. index node size %d", c->max_idx_node_sz);
+ dbg_gen("node sizes: data %zu, inode %zu, dentry %zu",
UBIFS_DATA_NODE_SZ, UBIFS_INO_NODE_SZ, UBIFS_DENT_NODE_SZ);
- dbg_msg("node sizes: trun %zu, sb %zu, master %zu",
+ dbg_gen("node sizes: trun %zu, sb %zu, master %zu",
UBIFS_TRUN_NODE_SZ, UBIFS_SB_NODE_SZ, UBIFS_MST_NODE_SZ);
- dbg_msg("node sizes: ref %zu, cmt. start %zu, orph %zu",
+ dbg_gen("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",
+ dbg_gen("max. node sizes: data %zu, inode %zu dentry %zu, idx %d",
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);
- dbg_msg("LEB overhead: %d", c->leb_overhead);
+ dbg_gen("dead watermark: %d", c->dead_wm);
+ dbg_gen("dark watermark: %d", c->dark_wm);
+ dbg_gen("LEB overhead: %d", c->leb_overhead);
x = (long long)c->main_lebs * c->dark_wm;
- dbg_msg("max. dark space: %lld (%lld KiB, %lld MiB)",
+ dbg_gen("max. dark space: %lld (%lld KiB, %lld MiB)",
x, x >> 10, x >> 20);
- dbg_msg("maximum bud bytes: %lld (%lld KiB, %lld MiB)",
+ dbg_gen("maximum bud bytes: %lld (%lld KiB, %lld MiB)",
c->max_bud_bytes, c->max_bud_bytes >> 10,
c->max_bud_bytes >> 20);
- dbg_msg("BG commit bud bytes: %lld (%lld KiB, %lld MiB)",
+ dbg_gen("BG commit bud bytes: %lld (%lld KiB, %lld MiB)",
c->bg_bud_bytes, c->bg_bud_bytes >> 10,
c->bg_bud_bytes >> 20);
- dbg_msg("current bud bytes %lld (%lld KiB, %lld MiB)",
+ dbg_gen("current bud bytes %lld (%lld KiB, %lld MiB)",
c->bud_bytes, c->bud_bytes >> 10, c->bud_bytes >> 20);
- dbg_msg("max. seq. number: %llu", c->max_sqnum);
- dbg_msg("commit number: %llu", c->cmt_no);
+ dbg_gen("max. seq. number: %llu", c->max_sqnum);
+ dbg_gen("commit number: %llu", c->cmt_no);
return 0;
@@ -1567,10 +1547,9 @@ static int ubifs_remount_rw(struct ubifs_info *c)
if (c->rw_incompat) {
ubifs_err("the file-system is not R/W-compatible");
- ubifs_msg("on-flash format version is w%d/r%d, but software "
- "only supports up to version w%d/r%d", c->fmt_version,
- c->ro_compat_version, UBIFS_FORMAT_VERSION,
- UBIFS_RO_COMPAT_VERSION);
+ ubifs_msg("on-flash format version is w%d/r%d, but software only supports up to version w%d/r%d",
+ c->fmt_version, c->ro_compat_version,
+ UBIFS_FORMAT_VERSION, UBIFS_RO_COMPAT_VERSION);
return -EROFS;
}
@@ -1579,6 +1558,12 @@ static int ubifs_remount_rw(struct ubifs_info *c)
c->remounting_rw = 1;
c->ro_mount = 0;
+ if (c->space_fixup) {
+ err = ubifs_fixup_free_space(c);
+ if (err)
+ goto out;
+ }
+
err = check_free_space(c);
if (err)
goto out;
@@ -1634,8 +1619,10 @@ static int ubifs_remount_rw(struct ubifs_info *c)
}
c->write_reserve_buf = kmalloc(COMPRESSED_DATA_NODE_BUF_SZ, GFP_KERNEL);
- if (!c->write_reserve_buf)
+ if (!c->write_reserve_buf) {
+ err = -ENOMEM;
goto out;
+ }
err = ubifs_lpt_init(c, 0, 1);
if (err)
@@ -1695,12 +1682,6 @@ static int ubifs_remount_rw(struct ubifs_info *c)
err = dbg_check_space_info(c);
}
- if (c->space_fixup) {
- err = ubifs_fixup_free_space(c);
- if (err)
- goto out;
- }
-
mutex_unlock(&c->umount_mutex);
return err;
@@ -1831,8 +1812,8 @@ static void ubifs_put_super(struct super_block *sb)
* next mount, so we just print a message and
* continue to unmount normally.
*/
- ubifs_err("failed to write master node, "
- "error %d", err);
+ ubifs_err("failed to write master node, error %d",
+ err);
} else {
for (i = 0; i < c->jhead_cnt; i++)
/* Make sure write-buffer timers are canceled */
@@ -1851,6 +1832,7 @@ static int ubifs_remount_fs(struct super_block *sb, int *flags, char *data)
int err;
struct ubifs_info *c = sb->s_fs_info;
+ sync_filesystem(sb);
dbg_gen("old flags %#lx, new flags %#x", sb->s_flags, *flags);
err = ubifs_parse_options(c, data, 1);
@@ -2074,8 +2056,10 @@ static int ubifs_fill_super(struct super_block *sb, void *data, int silent)
}
sb->s_root = d_make_root(root);
- if (!sb->s_root)
+ if (!sb->s_root) {
+ err = -ENOMEM;
goto out_umount;
+ }
mutex_unlock(&c->umount_mutex);
return 0;
@@ -2185,6 +2169,7 @@ static struct file_system_type ubifs_fs_type = {
.mount = ubifs_mount,
.kill_sb = kill_ubifs_super,
};
+MODULE_ALIAS_FS("ubifs");
/*
* Inode slab cache constructor.
@@ -2251,8 +2236,7 @@ static int __init ubifs_init(void)
* UBIFS_BLOCK_SIZE. It is assumed that both are powers of 2.
*/
if (PAGE_CACHE_SIZE < UBIFS_BLOCK_SIZE) {
- ubifs_err("VFS page cache size is %u bytes, but UBIFS requires"
- " at least 4096 bytes",
+ ubifs_err("VFS page cache size is %u bytes, but UBIFS requires at least 4096 bytes",
(unsigned int)PAGE_CACHE_SIZE);
return -EINVAL;
}
@@ -2301,6 +2285,12 @@ static void __exit ubifs_exit(void)
dbg_debugfs_exit();
ubifs_compressors_exit();
unregister_shrinker(&ubifs_shrinker_info);
+
+ /*
+ * Make sure all delayed rcu free inodes are flushed before we
+ * destroy cache.
+ */
+ rcu_barrier();
kmem_cache_destroy(ubifs_inode_slab);
unregister_filesystem(&ubifs_fs_type);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 13:11:56 +0000