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qemu / qemu / f71c08ea8e60f035485a512fd2af8908567592f0
commitf71c08ea8e60f035485a512fd2af8908567592f0[log] [tgz]
authorPavel Butsykin <pbutsykin@virtuozzo.com>Mon Sep 18 15:42:28 2017 +0300
committerMax Reitz <mreitz@redhat.com>Tue Sep 26 15:00:32 2017 +0200
treea3ef8dc5e1f34e1a18d755672029bced057885ba
parent4ffca8904a350460cdaa6304ea8c9b9c693d2d91 [diff]
qcow2: add qcow2_cache_discard

Whenever l2/refcount table clusters are discarded from the file we can
automatically drop unnecessary content of the cache tables. This reduces
the chance of eviction useful cache data and eliminates inconsistent data
in the cache with the data in the file.

Signed-off-by: Pavel Butsykin <pbutsykin@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 20170918124230.8152-3-pbutsykin@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
3 files changed
tree: a3ef8dc5e1f34e1a18d755672029bced057885ba
  1. accel/
  2. audio/
  3. backends/
  4. block/
  5. bsd-user/
  6. chardev/
  7. contrib/
  8. crypto/
  9. default-configs/
  10. disas/
  11. docs/
  12. fpu/
  13. fsdev/
  14. gdb-xml/
  15. hw/
  16. include/
  17. io/
  18. libdecnumber/
  19. linux-headers/
  20. linux-user/
  21. migration/
  22. nbd/
  23. net/
  24. pc-bios/
  25. po/
  26. qapi/
  27. qga/
  28. qobject/
  29. qom/
  30. replay/
  31. roms/
  32. scripts/
  33. scsi/
  34. slirp/
  35. stubs/
  36. target/
  37. tcg/
  38. tests/
  39. trace/
  40. ui/
  41. util/
  42. dtc
  43. .dir-locals.el
  44. .editorconfig
  45. .exrc
  46. .gdbinit
  47. .gitignore
  48. .gitmodules
  49. .mailmap
  50. .shippable.yml
  51. .travis.yml
  52. arch_init.c
  53. balloon.c
  54. block.c
  55. blockdev-nbd.c
  56. blockdev.c
  57. blockjob.c
  58. bootdevice.c
  59. bt-host.c
  60. bt-vhci.c
  61. Changelog
  62. CODING_STYLE
  63. configure
  64. COPYING
  65. COPYING.LIB
  66. COPYING.PYTHON
  67. cpus-common.c
  68. cpus.c
  69. device-hotplug.c
  70. device_tree.c
  71. disas.c
  72. dma-helpers.c
  73. dump.c
  74. exec.c
  75. gdbstub.c
  76. HACKING
  77. hmp-commands-info.hx
  78. hmp-commands.hx
  79. hmp.c
  80. hmp.h
  81. ioport.c
  82. iothread.c
  83. LICENSE
  84. MAINTAINERS
  85. Makefile
  86. Makefile.objs
  87. Makefile.target
  88. memory.c
  89. memory_ldst.inc.c
  90. memory_mapping.c
  91. module-common.c
  92. monitor.c
  93. numa.c
  94. os-posix.c
  95. os-win32.c
  96. qapi-schema.json
  97. qdev-monitor.c
  98. qdict-test-data.txt
  99. qemu-bridge-helper.c
  100. qemu-doc.texi
  101. qemu-ga.texi
  102. qemu-img-cmds.hx
  103. qemu-img.c
  104. qemu-img.texi
  105. qemu-io-cmds.c
  106. qemu-io.c
  107. qemu-nbd.c
  108. qemu-nbd.texi
  109. qemu-option-trace.texi
  110. qemu-options-wrapper.h
  111. qemu-options.h
  112. qemu-options.hx
  113. qemu-seccomp.c
  114. qemu-tech.texi
  115. qemu.nsi
  116. qemu.sasl
  117. qmp.c
  118. qtest.c
  119. README
  120. replication.c
  121. replication.h
  122. rules.mak
  123. thunk.c
  124. tpm.c
  125. trace-events
  126. VERSION
  127. version.rc
  128. vl.c