1 /**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 *** To edit the content of this header, modify the corresponding 11 *** source file (e.g. under external/kernel-headers/original/) then 12 *** run bionic/libc/kernel/tools/update_all.py 13 *** 14 *** Any manual change here will be lost the next time this script will 15 *** be run. You've been warned! 16 *** 17 **************************************************************************** 18 ****************************************************************************/ 19 #ifndef _LINUX_BACKING_DEV_H 20 #define _LINUX_BACKING_DEV_H 21 #include <asm/atomic.h> 22 enum bdi_state { 23 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 24 BDI_pdflush, 25 BDI_write_congested, 26 BDI_read_congested, 27 BDI_unused, 28 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 29 }; 30 typedef int (congested_fn)(void *, int); 31 struct backing_dev_info { 32 unsigned long ra_pages; 33 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 34 unsigned long state; 35 unsigned int capabilities; 36 congested_fn *congested_fn; 37 void *congested_data; 38 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 39 void (*unplug_io_fn)(struct backing_dev_info *, struct page *); 40 void *unplug_io_data; 41 }; 42 #define BDI_CAP_NO_ACCT_DIRTY 0x00000001 43 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 44 #define BDI_CAP_NO_WRITEBACK 0x00000002 45 #define BDI_CAP_MAP_COPY 0x00000004 46 #define BDI_CAP_MAP_DIRECT 0x00000008 47 #define BDI_CAP_READ_MAP 0x00000010 48 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 49 #define BDI_CAP_WRITE_MAP 0x00000020 50 #define BDI_CAP_EXEC_MAP 0x00000040 51 #define BDI_CAP_VMFLAGS (BDI_CAP_READ_MAP | BDI_CAP_WRITE_MAP | BDI_CAP_EXEC_MAP) 52 #if defined(VM_MAYREAD) && BDI_CAP_READ_MAP != (VM_MAYREAD || BDI_CAP_WRITE_MAP != (VM_MAYWRITE || BDI_CAP_EXEC_MAP != VM_MAYEXEC)) 53 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 54 #error please change backing_dev_info::capabilities flags 55 #endif 56 #define bdi_cap_writeback_dirty(bdi) (!((bdi)->capabilities & BDI_CAP_NO_WRITEBACK)) 57 #define bdi_cap_account_dirty(bdi) (!((bdi)->capabilities & BDI_CAP_NO_ACCT_DIRTY)) 58 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 59 #define mapping_cap_writeback_dirty(mapping) bdi_cap_writeback_dirty((mapping)->backing_dev_info) 60 #define mapping_cap_account_dirty(mapping) bdi_cap_account_dirty((mapping)->backing_dev_info) 61 #endif 62