xiaomi-sm8450/android_kernel_xiaomi_sm8450
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Fix btrfs_get_extent and get_block corner cases, and disable O_DIRECT reads

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The generic O_DIRECT code assumes all the bios have the same bdev,
which isn't true for multi-device btrfs.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2008-04-22 13:26:46 -04:00
parent 409c6118d3
commit e1c4b7451e
3 changed files with 25 additions and 14 deletions
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2
fs/btrfs/volumes.c
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@@ -1161,7 +1161,6 @@ int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio,
int total_devs = 1;
length = bio->bi_size;
map_tree = &root->fs_info->mapping_tree;
map_length = length;
@@ -1192,6 +1191,7 @@ int btrfs_map_bio(struct btrfs_root *root, int rw, struct bio *bio,
}
bio->bi_sector = multi->stripes[dev_nr].physical >> 9;
dev = multi->stripes[dev_nr].dev;
bio->bi_bdev = dev->bdev;
spin_lock(&dev->io_lock);
dev->total_ios++;