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for-5.9-tag

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Merge tag 'for-5.9-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull more btrfs updates from David Sterba:
 "One minor update, the rest are fixes that have arrived a bit late for
  the first batch. There are also some recent fixes for bugs that were
  discovered during the merge window and pop up during testing.

  User visible change:

   - show correct subvolume path in /proc/mounts for bind mounts

  Fixes:

   - fix compression messages when remounting with different level or
     compression algorithm

   - tree-log: fix some memory leaks on error handling paths

   - restore I_VERSION on remount

   - fix return values and error code mixups

   - fix umount crash with quotas enabled when removing sysfs files

   - fix trim range on a shrunk device"

* tag 'for-5.9-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: trim: fix underflow in trim length to prevent access beyond device boundary
  btrfs: fix return value mixup in btrfs_get_extent
  btrfs: sysfs: fix NULL pointer dereference at btrfs_sysfs_del_qgroups()
  btrfs: check correct variable after allocation in btrfs_backref_iter_alloc
  btrfs: make sure SB_I_VERSION doesn't get unset by remount
  btrfs: fix memory leaks after failure to lookup checksums during inode logging
  btrfs: don't show full path of bind mounts in subvol=
  btrfs: fix messages after changing compression level by remount
  btrfs: only search for left_info if there is no right_info in try_merge_free_space
  btrfs: inode: fix NULL pointer dereference if inode doesn't need compression
This commit is contained in:
Linus Torvalds 2020-08-13 12:26:18 -07:00
commit 23c2c8c6fa
9 changed files with 65 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
fs/btrfs/backref.c
View File

@ -2303,7 +2303,7 @@ struct btrfs_backref_iter *btrfs_backref_iter_alloc(
return NULL;
ret->path = btrfs_alloc_path();
if (!ret) {
if (!ret->path) {
kfree(ret);
return NULL;
}

2
fs/btrfs/extent-io-tree.h
View File

@ -34,6 +34,8 @@ struct io_failure_record;
*/
#define CHUNK_ALLOCATED EXTENT_DIRTY
#define CHUNK_TRIMMED EXTENT_DEFRAG
#define CHUNK_STATE_MASK (CHUNK_ALLOCATED | \
CHUNK_TRIMMED)
enum {
IO_TREE_FS_PINNED_EXTENTS,

14
fs/btrfs/extent-tree.c
View File

@ -33,6 +33,7 @@
#include "delalloc-space.h"
#include "block-group.h"
#include "discard.h"
#include "rcu-string.h"
#undef SCRAMBLE_DELAYED_REFS
@ -5668,6 +5669,19 @@ static int btrfs_trim_free_extents(struct btrfs_device *device, u64 *trimmed)
&start, &end,
CHUNK_TRIMMED | CHUNK_ALLOCATED);
/* Check if there are any CHUNK_* bits left */
if (start > device->total_bytes) {
WARN_ON(IS_ENABLED(CONFIG_BTRFS_DEBUG));
btrfs_warn_in_rcu(fs_info,
"ignoring attempt to trim beyond device size: offset %llu length %llu device %s device size %llu",
start, end - start + 1,
rcu_str_deref(device->name),
device->total_bytes);
mutex_unlock(&fs_info->chunk_mutex);
ret = 0;
break;
}
/* Ensure we skip the reserved area in the first 1M */
start = max_t(u64, start, SZ_1M);

4
fs/btrfs/free-space-cache.c
View File

@ -2282,7 +2282,7 @@ out:
static bool try_merge_free_space(struct btrfs_free_space_ctl *ctl,
struct btrfs_free_space *info, bool update_stat)
{
struct btrfs_free_space *left_info;
struct btrfs_free_space *left_info = NULL;
struct btrfs_free_space *right_info;
bool merged = false;
u64 offset = info->offset;
@ -2298,7 +2298,7 @@ static bool try_merge_free_space(struct btrfs_free_space_ctl *ctl,
if (right_info && rb_prev(&right_info->offset_index))
left_info = rb_entry(rb_prev(&right_info->offset_index),
struct btrfs_free_space, offset_index);
else
else if (!right_info)
left_info = tree_search_offset(ctl, offset - 1, 0, 0);
/* See try_merge_free_space() comment. */

10
fs/btrfs/inode.c
View File

@ -654,12 +654,18 @@ cont:
page_error_op |
PAGE_END_WRITEBACK);
/*
* Ensure we only free the compressed pages if we have
* them allocated, as we can still reach here with
* inode_need_compress() == false.
*/
if (pages) {
for (i = 0; i < nr_pages; i++) {
WARN_ON(pages[i]->mapping);
put_page(pages[i]);
}
kfree(pages);
}
return 0;
}
}
@ -6622,7 +6628,7 @@ struct extent_map *btrfs_get_extent(struct btrfs_inode *inode,
extent_type == BTRFS_FILE_EXTENT_PREALLOC) {
/* Only regular file could have regular/prealloc extent */
if (!S_ISREG(inode->vfs_inode.i_mode)) {
ret = -EUCLEAN;
err = -EUCLEAN;
btrfs_crit(fs_info,
"regular/prealloc extent found for non-regular inode %llu",
btrfs_ino(inode));

28
fs/btrfs/super.c
View File

@ -517,6 +517,7 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options,
char *compress_type;
bool compress_force = false;
enum btrfs_compression_type saved_compress_type;
int saved_compress_level;
bool saved_compress_force;
int no_compress = 0;
@ -598,6 +599,7 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options,
info->compress_type : BTRFS_COMPRESS_NONE;
saved_compress_force =
btrfs_test_opt(info, FORCE_COMPRESS);
saved_compress_level = info->compress_level;
if (token == Opt_compress ||
token == Opt_compress_force ||
strncmp(args[0].from, "zlib", 4) == 0) {
@ -642,6 +644,8 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options,
no_compress = 0;
} else if (strncmp(args[0].from, "no", 2) == 0) {
compress_type = "no";
info->compress_level = 0;
info->compress_type = 0;
btrfs_clear_opt(info->mount_opt, COMPRESS);
btrfs_clear_opt(info->mount_opt, FORCE_COMPRESS);
compress_force = false;
@ -662,11 +666,11 @@ int btrfs_parse_options(struct btrfs_fs_info *info, char *options,
*/
btrfs_clear_opt(info->mount_opt, FORCE_COMPRESS);
}
if ((btrfs_test_opt(info, COMPRESS) &&
(info->compress_type != saved_compress_type ||
compress_force != saved_compress_force)) ||
(!btrfs_test_opt(info, COMPRESS) &&
no_compress == 1)) {
if (no_compress == 1) {
btrfs_info(info, "use no compression");
} else if ((info->compress_type != saved_compress_type) ||
(compress_force != saved_compress_force) ||
(info->compress_level != saved_compress_level)) {
btrfs_info(info, "%s %s compression, level %d",
(compress_force) ? "force" : "use",
compress_type, info->compress_level);
@ -1382,6 +1386,7 @@ static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry)
{
struct btrfs_fs_info *info = btrfs_sb(dentry->d_sb);
const char *compress_type;
const char *subvol_name;
if (btrfs_test_opt(info, DEGRADED))
seq_puts(seq, ",degraded");
@ -1468,8 +1473,13 @@ static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry)
seq_puts(seq, ",ref_verify");
seq_printf(seq, ",subvolid=%llu",
BTRFS_I(d_inode(dentry))->root->root_key.objectid);
subvol_name = btrfs_get_subvol_name_from_objectid(info,
BTRFS_I(d_inode(dentry))->root->root_key.objectid);
if (!IS_ERR(subvol_name)) {
seq_puts(seq, ",subvol=");
seq_dentry(seq, dentry, " \t\n\\");
seq_escape(seq, subvol_name, " \t\n\\");
kfree(subvol_name);
}
return 0;
}
@ -1950,6 +1960,12 @@ static int btrfs_remount(struct super_block *sb, int *flags, char *data)
set_bit(BTRFS_FS_OPEN, &fs_info->flags);
}
out:
/*
* We need to set SB_I_VERSION here otherwise it'll get cleared by VFS,
* since the absence of the flag means it can be toggled off by remount.
*/
*flags |= SB_I_VERSION;
wake_up_process(fs_info->transaction_kthread);
btrfs_remount_cleanup(fs_info, old_opts);
clear_bit(BTRFS_FS_STATE_REMOUNTING, &fs_info->fs_state);

2
fs/btrfs/sysfs.c
View File

@ -1565,10 +1565,12 @@ void btrfs_sysfs_del_qgroups(struct btrfs_fs_info *fs_info)
rbtree_postorder_for_each_entry_safe(qgroup, next,
&fs_info->qgroup_tree, node)
btrfs_sysfs_del_one_qgroup(fs_info, qgroup);
if (fs_info->qgroups_kobj) {
kobject_del(fs_info->qgroups_kobj);
kobject_put(fs_info->qgroups_kobj);
fs_info->qgroups_kobj = NULL;
}
}
/* Called when qgroups get initialized, thus there is no need for locking */
int btrfs_sysfs_add_qgroups(struct btrfs_fs_info *fs_info)

8
fs/btrfs/tree-log.c
View File

@ -4036,11 +4036,8 @@ static noinline int copy_items(struct btrfs_trans_handle *trans,
fs_info->csum_root,
ds + cs, ds + cs + cl - 1,
&ordered_sums, 0);
if (ret) {
btrfs_release_path(dst_path);
kfree(ins_data);
return ret;
}
if (ret)
break;
}
}
}
@ -4053,7 +4050,6 @@ static noinline int copy_items(struct btrfs_trans_handle *trans,
* we have to do this after the loop above to avoid changing the
* log tree while trying to change the log tree.
*/
ret = 0;
while (!list_empty(&ordered_sums)) {
struct btrfs_ordered_sum *sums = list_entry(ordered_sums.next,
struct btrfs_ordered_sum,

4
fs/btrfs/volumes.c
View File

@ -4720,6 +4720,10 @@ again:
}
mutex_lock(&fs_info->chunk_mutex);
/* Clear all state bits beyond the shrunk device size */
clear_extent_bits(&device->alloc_state, new_size, (u64)-1,
CHUNK_STATE_MASK);
btrfs_device_set_disk_total_bytes(device, new_size);
if (list_empty(&device->post_commit_list))
list_add_tail(&device->post_commit_list,