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common: new function to get real device path name and basename
If TEST_DEV or SCRATCH_DEV is symlink(mostly a lvm lv), a simple basename is not enough, symlink should be followed. This task is common enough, so introduce new helper functions and replace all readlink calls in ext4/305 generic/009 generic/019 generic/285 generic/312 Signed-off-by: Eryu Guan <eguan@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Chinner <david@fromorbit.com>
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@@ -41,9 +41,7 @@ _need_to_be_root
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_require_scratch
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_require_fail_make_request
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# TODO: Function are common enough to be moved to common/blkdev
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SCRATCH_REAL_DEV=`readlink -f $SCRATCH_DEV`
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SCRATCH_BDEV=`basename $SCRATCH_REAL_DEV`
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SCRATCH_BDEV=`_short_dev $SCRATCH_DEV`
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allow_fail_make_request()
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{
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