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| author | Baolin Liu <liubaolin@kylinos.cn> | 2026-08-21 13:32:37 +0800 |
|---|---|---|
| committer | Namjae Jeon <linkinjeon@kernel.org> | 2026-08-26 20:15:56 +0900 |
| commit | be9e89ccb8e52a3e4b67feeb03ebd8133091dc7e (patch) | |
| tree | 05fda6880d160de63f3ed2d328d249016bbe981e | |
| parent | cf06dcd572845723821b54a608fc2da995c3c8e2 (diff) | |
| download | linux-be9e89ccb8e52a3e4b67feeb03ebd8133091dc7e.tar.gz linux-be9e89ccb8e52a3e4b67feeb03ebd8133091dc7e.zip | |
ntfs: only count successfully cleared runs when freeing clusters
ntfs_cluster_free_from_rl_nolock() adds a run's length to nr_freed
whenever the error bookkeeping condition is false, which includes
cases where ntfs_bitmap_clear_run() actually failed - e.g. a second
run failing with the same errno as an earlier one, or any failure
after a non-ENOMEM error was already recorded. Since a failed
ntfs_bitmap_clear_run() rolls back its partial modifications, no
bits were cleared for that run, yet its length still inflates
vol->free_clusters, corrupting statfs output and the allocator's
free space gate.
Only count runs whose bitmap clear succeeded.
Fixes: 11ccc9107dc4 ("ntfs: update runlist handling and cluster allocator")
Signed-off-by: Baolin Liu <liubaolin@kylinos.cn>
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
| -rw-r--r-- | fs/ntfs/lcnalloc.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/ntfs/lcnalloc.c b/fs/ntfs/lcnalloc.c index aa2e017a4384..795f71d26895 100644 --- a/fs/ntfs/lcnalloc.c +++ b/fs/ntfs/lcnalloc.c @@ -53,10 +53,10 @@ int ntfs_cluster_free_from_rl_nolock(struct ntfs_volume *vol, if (rl->lcn < 0) continue; err = ntfs_bitmap_clear_run(lcnbmp_vi, rl->lcn, rl->length); - if (unlikely(err && (!ret || ret == -ENOMEM) && ret != err)) - ret = err; - else + if (likely(!err)) nr_freed += rl->length; + else if (!ret || ret == -ENOMEM) + ret = err; } ntfs_inc_free_clusters(vol, nr_freed); ntfs_debug("Done."); |