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review.shift-gmbh.com / SHIFTPHONES / android_system_vold / dcee5c1d213c3f034126ec806966f4e029b81140
commitdcee5c1d213c3f034126ec806966f4e029b81140[log] [tgz]
authorNikita Ioffe <ioffe@google.com>Fri Jun 12 12:59:45 2020 +0100
committerNikita Ioffe <ioffe@google.com>Wed Jun 17 15:58:25 2020 +0100
tree6a420bb5959128a3d269261c0024973c1ed99c09
parentcbb69e548a927b4ec2933e1033f955d88004db25 [diff]
Configure read ahead for fuse mounts

For fuse read ahead can be configured by writing a value to the
/sys/class/bdi/{MAJOR}:{MINOR}/read_ahead_kb file.

There are several different ways of getting {MAJOR}:{MINOR} values of
the filesystem:

* Look at st_dev of stat("/mnt/user/0/emulated").
* Parse /proc/self/mountinfo.

Stat'ing approach is used since it's easier to implement.

Bug: 157982297
Test: atest vold_tests
Test: adb shell cat /proc/self/mountinfo to get MAJOR:MINOR
Test: adb shell cat /sys/class/bdi/{MAJOR}:{MINOR}/read_ahead_kb
Test: created public volume, checked it's read_ahead_kb is also 256
Change-Id: Id0c149c4af1ceabf3afc33b4100563a512b38316
4 files changed
tree: 6a420bb5959128a3d269261c0024973c1ed99c09
  1. bench/
  2. binder/
  3. fs/
  4. model/
  5. tests/
  6. .clang-format ⇨ ../../build/soong/scripts/system-clang-format
  7. Android.bp
  8. AppFuseUtil.cpp
  9. AppFuseUtil.h
  10. Benchmark.cpp
  11. Benchmark.h
  12. BenchmarkGen.h
  13. CheckEncryption.cpp
  14. CheckEncryption.h
  15. Checkpoint.cpp
  16. Checkpoint.h
  17. CleanSpec.mk
  18. cryptfs.cpp
  19. cryptfs.h
  20. CryptoType.cpp
  21. CryptoType.h
  22. Devmapper.cpp
  23. Devmapper.h
  24. EncryptInplace.cpp
  25. EncryptInplace.h
  26. FileDeviceUtils.cpp
  27. FileDeviceUtils.h
  28. FsCrypt.cpp
  29. FsCrypt.h
  30. fscrypt_uapi.h
  31. IdleMaint.cpp
  32. IdleMaint.h
  33. KeyBuffer.cpp
  34. KeyBuffer.h
  35. Keymaster.cpp
  36. Keymaster.h
  37. KeyStorage.cpp
  38. KeyStorage.h
  39. KeyUtil.cpp
  40. KeyUtil.h
  41. Loop.cpp
  42. Loop.h
  43. main.cpp
  44. MetadataCrypt.cpp
  45. MetadataCrypt.h
  46. MoveStorage.cpp
  47. MoveStorage.h
  48. NetlinkHandler.cpp
  49. NetlinkHandler.h
  50. NetlinkManager.cpp
  51. NetlinkManager.h
  52. OWNERS
  53. PREUPLOAD.cfg
  54. Process.cpp
  55. Process.h
  56. ScryptParameters.cpp
  57. ScryptParameters.h
  58. secdiscard.cpp
  59. sehandle.h
  60. TEST_MAPPING
  61. Utils.cpp
  62. Utils.h
  63. vdc.cpp
  64. vdc.rc
  65. vold.rc
  66. vold_prepare_subdirs.cpp
  67. VoldNativeService.cpp
  68. VoldNativeService.h
  69. VoldNativeServiceValidation.cpp
  70. VoldNativeServiceValidation.h
  71. VoldUtil.cpp
  72. VoldUtil.h
  73. VolumeManager.cpp
  74. VolumeManager.h
  75. wait_for_keymaster.cpp
  76. wait_for_keymaster.rc