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block: remove the NULL bdev check in bdev_read_only

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Only a single caller can end up in bdev_read_only, so move the check
there.

Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Ming Lei <[email protected]>
Reviewed-by: Martin K. Petersen <[email protected]>
Reviewed-by: Hannes Reinecke <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Christoph Hellwig authored and Jens Axboe committed 2021-01-24 18:15:57 -07:00
1 parent 1e0dcca9e1
commit 6f0d9689b6
2 files changed
+2 -4
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block/genhd.c
-3
View File
@@ -1657,11 +1657,8 @@ EXPORT_SYMBOL(set_disk_ro);
int bdev_read_only(struct block_device *bdev)
{
if (!bdev)
return 0;
return bdev->bd_read_only;
}
EXPORT_SYMBOL(bdev_read_only);
/*
fs/super.c
+2 -1
View File
@@ -865,7 +865,8 @@ int reconfigure_super(struct fs_context *fc)
if (fc->sb_flags_mask & SB_RDONLY) {
#ifdef CONFIG_BLOCK
if (!(fc->sb_flags & SB_RDONLY) && bdev_read_only(sb->s_bdev))
if (!(fc->sb_flags & SB_RDONLY) && sb->s_bdev &&
bdev_read_only(sb->s_bdev))
return -EACCES;
#endif