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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-11-05 10:11:53 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-11-05 10:11:53 +0100 |
| commit | 09fbb82f9413641cbb6b3fc4970ed4ff6d2a2c2a (patch) | |
| tree | 886c21539f1df24a14175997dc045715cd1d25e2 /fs/btrfs/delayed-ref.h | |
| parent | driver core: constify devlink class (diff) | |
| parent | Linux 6.12-rc6 (diff) | |
| download | linux-09fbb82f9413641cbb6b3fc4970ed4ff6d2a2c2a.tar.xz linux-09fbb82f9413641cbb6b3fc4970ed4ff6d2a2c2a.zip | |
Merge 6.12-rc6 into driver-core-next
We need the driver-core fix/revert in here as well to build on top of.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/btrfs/delayed-ref.h')
| -rw-r--r-- | fs/btrfs/delayed-ref.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h index 085f30968aba..352921e76c74 100644 --- a/fs/btrfs/delayed-ref.h +++ b/fs/btrfs/delayed-ref.h @@ -202,7 +202,15 @@ struct btrfs_delayed_ref_root { /* head ref rbtree */ struct rb_root_cached href_root; - /* Track dirty extent records. */ + /* + * Track dirty extent records. + * The keys correspond to the logical address of the extent ("bytenr") + * right shifted by fs_info->sectorsize_bits. This is both to get a more + * dense index space (optimizes xarray structure) and because indexes in + * xarrays are of "unsigned long" type, meaning they are 32 bits wide on + * 32 bits platforms, limiting the extent range to 4G which is too low + * and makes it unusable (truncated index values) on 32 bits platforms. + */ struct xarray dirty_extents; /* this spin lock protects the rbtree and the entries inside */ |