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for-6.15-rc2-tag 

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Merge tag 'for-6.15-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:

 - handle encoded read ioctl returning EAGAIN so it does not mistakenly
   free the work structure

 - escape subvolume path in mount option list so it cannot be wrongly
   parsed when the path contains ","

 - remove folio size assertions when writing super block to device with
   enabled large folios

* tag 'for-6.15-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: remove folio order ASSERT()s in super block writeback path
  btrfs: correctly escape subvol in btrfs_show_options()
  btrfs: ioctl: don't free iov when btrfs_encoded_read() returns -EAGAIN
This commit is contained in:
Linus Torvalds 2025-04-17 09:17:57 -07:00
parent a54f4a97e3 65f2a3b232
commit 0cb9ce06a6
3 changed files with 3 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
fs/btrfs/disk-io.c
View File

@ -3853,7 +3853,6 @@ static int write_dev_supers(struct btrfs_device *device,
atomic_inc(&device->sb_write_errors);
continue;
}
ASSERT(folio_order(folio) == 0);
offset = offset_in_folio(folio, bytenr);
disk_super = folio_address(folio) + offset;
@ -3926,7 +3925,6 @@ static int wait_dev_supers(struct btrfs_device *device, int max_mirrors)
/* If the folio has been removed, then we know it completed. */
if (IS_ERR(folio))
continue;
ASSERT(folio_order(folio) == 0);
/* Folio will be unlocked once the write completes. */
folio_wait_locked(folio);

2
fs/btrfs/ioctl.c
View File

@ -4902,6 +4902,8 @@ static int btrfs_uring_encoded_read(struct io_uring_cmd *cmd, unsigned int issue
ret = btrfs_encoded_read(&kiocb, &data->iter, &data->args, &cached_state,
&disk_bytenr, &disk_io_size);
if (ret == -EAGAIN)
goto out_acct;
if (ret < 0 && ret != -EIOCBQUEUED)
goto out_free;

3
fs/btrfs/super.c
View File

@ -1139,8 +1139,7 @@ static int btrfs_show_options(struct seq_file *seq, struct dentry *dentry)
subvol_name = btrfs_get_subvol_name_from_objectid(info,
btrfs_root_id(BTRFS_I(d_inode(dentry))->root));
if (!IS_ERR(subvol_name)) {
seq_puts(seq, ",subvol=");
seq_escape(seq, subvol_name, " \t\n\\");
seq_show_option(seq, "subvol", subvol_name);
kfree(subvol_name);
}
return 0;