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btrfs: synchronize incompat feature bits with sysfs files

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The files under /sys/fs/UUID/features get out of sync with the actual
incompat bits set for the filesystem if they change after mount (eg. the
LZO compression).

Synchronize the feature bits with the sysfs files representing them
right after we set/clear them.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba
2016-01-21 18:54:41 +01:00
parent 444e751698
commit 14e46e0495
4 changed files with 17 additions and 0 deletions
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7
fs/btrfs/free-space-tree.c
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@@ -23,6 +23,7 @@
#include "locking.h"
#include "free-space-tree.h"
#include "transaction.h"
#include "sysfs.h"
static int __add_block_group_free_space(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info,
@@ -1169,6 +1170,9 @@ int btrfs_create_free_space_tree(struct btrfs_fs_info *fs_info)
}
btrfs_set_fs_compat_ro(fs_info, FREE_SPACE_TREE);
btrfs_sysfs_feature_update(fs_info,
BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE, FEAT_COMPAT_RO);
fs_info->creating_free_space_tree = 0;
ret = btrfs_commit_transaction(trans, tree_root);
@@ -1237,6 +1241,9 @@ int btrfs_clear_free_space_tree(struct btrfs_fs_info *fs_info)
return PTR_ERR(trans);
btrfs_clear_fs_compat_ro(fs_info, FREE_SPACE_TREE);
btrfs_sysfs_feature_update(fs_info,
BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE, FEAT_COMPAT_RO);
fs_info->free_space_root = NULL;
ret = clear_free_space_tree(trans, free_space_root);