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android-review.linaro.org / platform / system / vold / aeb87efb1ffe2ed425965e2c8e3bbd2bf80947dc
commitaeb87efb1ffe2ed425965e2c8e3bbd2bf80947dc[log] [tgz]
authorZim <zezeozue@google.com>Thu Sep 26 16:06:05 2019 +0100
committerZim <zezeozue@google.com>Thu Sep 26 16:11:36 2019 +0100
tree59c44acad8dfb0b1bd5281f11dfbdd85eb15255f
parent981222f500baffae98bfd5949de41257a8238074 [diff]
Lazily write inode timestamps to FUSE

Before this, the FUSE daemon receives a setattr inode timestamp
request for every write request. This can be crippling for write
performance or read performance during writes especially random
writes where the write back cache does not effectively coagulate
requests.

We now add the MS_LAZYTIME mount flag
(http://man7.org/linux/man-pages/man2/mount.2.html) to lazily flush
the timestamp updates from memory to disk

Test: m
Bug: 135341433
Change-Id: I95a467d5682a325b4099f32634d93ed2921f815e
1 file changed
tree: 59c44acad8dfb0b1bd5281f11dfbdd85eb15255f
  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. Devmapper.cpp
  21. Devmapper.h
  22. EncryptInplace.cpp
  23. EncryptInplace.h
  24. FileDeviceUtils.cpp
  25. FileDeviceUtils.h
  26. FsCrypt.cpp
  27. FsCrypt.h
  28. IdleMaint.cpp
  29. IdleMaint.h
  30. KeyBuffer.cpp
  31. KeyBuffer.h
  32. Keymaster.cpp
  33. Keymaster.h
  34. KeyStorage.cpp
  35. KeyStorage.h
  36. KeyUtil.cpp
  37. KeyUtil.h
  38. Loop.cpp
  39. Loop.h
  40. main.cpp
  41. MetadataCrypt.cpp
  42. MetadataCrypt.h
  43. MoveStorage.cpp
  44. MoveStorage.h
  45. NetlinkHandler.cpp
  46. NetlinkHandler.h
  47. NetlinkManager.cpp
  48. NetlinkManager.h
  49. OWNERS
  50. PREUPLOAD.cfg
  51. Process.cpp
  52. Process.h
  53. ScryptParameters.cpp
  54. ScryptParameters.h
  55. secdiscard.cpp
  56. sehandle.h
  57. Utils.cpp
  58. Utils.h
  59. vdc.cpp
  60. vdc.rc
  61. vold.rc
  62. vold_prepare_subdirs.cpp
  63. VoldNativeService.cpp
  64. VoldNativeService.h
  65. VoldUtil.cpp
  66. VoldUtil.h
  67. VolumeManager.cpp
  68. VolumeManager.h
  69. wait_for_keymaster.cpp
  70. wait_for_keymaster.rc