47 lines
1.0 KiB
Plaintext
47 lines
1.0 KiB
Plaintext
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What: /sys/class/bdi/<bdi>/
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Date: January 2008
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Contact: Peter Zijlstra <a.p.zijlstra@chello.nl>
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Description:
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Provide a place in sysfs for the backing_dev_info object.
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This allows us to see and set the various BDI specific variables.
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The <bdi> identifier can be either of the following:
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MAJOR:MINOR
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Device number for block devices, or value of st_dev on
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non-block filesystems which provide their own BDI, such as NFS
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and FUSE.
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default
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The default backing dev, used for non-block device backed
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filesystems which do not provide their own BDI.
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Files under /sys/class/bdi/<bdi>/
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---------------------------------
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read_ahead_kb (read-write)
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Size of the read-ahead window in kilobytes
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reclaimable_kb (read-only)
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Reclaimable (dirty or unstable) memory destined for writeback
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to this device
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writeback_kb (read-only)
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Memory currently under writeback to this device
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dirty_kb (read-only)
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Global threshold for reclaimable + writeback memory
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bdi_dirty_kb (read-only)
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Current threshold on this BDI for reclaimable + writeback
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memory
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