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| author | Al Viro <viro@zeniv.linux.org.uk> | 2024-04-12 08:07:29 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2024-05-03 02:50:11 +0300 |
| commit | 1116b9fa15c09748ae05d2365a305fa22671eb1e (patch) | |
| tree | 0d380782b6d3aadc770d758ef956887f028423fa /block | |
| parent | b8c873edbf35570b93edfeddad9e85da54defa52 (diff) | |
| download | linux-1116b9fa15c09748ae05d2365a305fa22671eb1e.tar.xz | |
bdev: infrastructure for flags
Replace bd_partno with a 32bit field (__bd_flags). The lower 8 bits
contain the partition number, the upper 24 are for flags.
Helpers: bdev_{test,set,clear}_flag(bdev, flag), with atomic_or()
and atomic_andnot() used to set/clear.
NOTE: this commit does not actually move any flags over there - they
are still bool fields. As the result, it shifts the fields wrt
cacheline boundaries; that's going to be restored once the first
3 flags are dealt with.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/bdev.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/block/bdev.c b/block/bdev.c index 7a5f611c3d2e..2ec223315500 100644 --- a/block/bdev.c +++ b/block/bdev.c @@ -411,7 +411,7 @@ struct block_device *bdev_alloc(struct gendisk *disk, u8 partno) mutex_init(&bdev->bd_fsfreeze_mutex); spin_lock_init(&bdev->bd_size_lock); mutex_init(&bdev->bd_holder_lock); - bdev->bd_partno = partno; + atomic_set(&bdev->__bd_flags, partno); bdev->bd_inode = inode; bdev->bd_queue = disk->queue; if (partno) |