For async-write on block device,if device removed,but the vfs don't know it.
It will continu do.
Patch1 set size of inode of block device to zero when removed disk.By this,vfs know
disk changed.
Path2 add size-check on blk_aio_write.If pos of write larger than size of inode,it will
return zero.So the user can check disk state.
Jianpeng Ma (2):
block: Set inode of block_device size to zero when delete gendisk.
block_dev: Add size check before doing async write on block device.
block/genhd.c | 14 ++++++++++++++
fs/block_dev.c | 4 ++++
2 files changed, 18 insertions(+)
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1.8.4-rc0
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