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https://github.com/koverstreet/bcachefs-tools.git
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43 lines
1010 B
C
43 lines
1010 B
C
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#ifndef _LINUX_BACKING_DEV_H
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#define _LINUX_BACKING_DEV_H
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typedef int (congested_fn)(void *, int);
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enum wb_congested_state {
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WB_async_congested, /* The async (write) queue is getting full */
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WB_sync_congested, /* The sync queue is getting full */
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};
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struct backing_dev_info {
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unsigned ra_pages;
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unsigned capabilities;
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congested_fn *congested_fn;
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void *congested_data;
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};
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#define BDI_CAP_NO_ACCT_DIRTY 0x00000001
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#define BDI_CAP_NO_WRITEBACK 0x00000002
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#define BDI_CAP_NO_ACCT_WB 0x00000004
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#define BDI_CAP_STABLE_WRITES 0x00000008
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#define BDI_CAP_STRICTLIMIT 0x00000010
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#define BDI_CAP_CGROUP_WRITEBACK 0x00000020
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static inline int bdi_congested(struct backing_dev_info *bdi, int cong_bits)
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{
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return 0;
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}
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static inline int __must_check bdi_setup_and_register(struct backing_dev_info *bdi,
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char *name)
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{
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bdi->capabilities = 0;
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return 0;
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}
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static inline void bdi_destroy(struct backing_dev_info *bdi) {}
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#define VM_MAX_READAHEAD 128 /* kbytes */
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#endif /* _LINUX_BACKING_DEV_H */
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