Btrfs: fix unprotected device's variants on 32bits machine

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->total_bytes,->disk_total_bytes,->bytes_used is protected by chunk
lock when we change them, but sometimes we read them without any lock,
and we might get unexpected value. We fix this problem like inode's
i_size.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>

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Miao Xie 2014-09-03 21:35:38 +08:00 • committed by Chris Mason

parent 1c1161870c

commit 7cc8e58d53

4 changed files with 124 additions and 29 deletions

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15

fs/btrfs/dev-replace.c

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6

fs/btrfs/ioctl.c

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48

fs/btrfs/volumes.c

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84

fs/btrfs/volumes.h

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