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qemu-android / qemu-android / 729962f6db43bf262a446f5e13d900ffb3c54a88
commit729962f6db43bf262a446f5e13d900ffb3c54a88[log] [tgz]
authorStefan Hajnoczi <stefanha@redhat.com>Wed Nov 19 14:19:45 2014 +0000
committerKevin Wolf <kwolf@redhat.com>Wed Dec 10 10:25:30 2014 +0100
treee93bd7014305629874c116d50cea985ce097c041
parente3442099a2794925dfbe83711cd204caf80eae60 [diff]
blockdev: acquire AioContext in change-backing-file

Add dataplane support to the change-backing-file QMP commands.  By
acquiring the AioContext we avoid race conditions with the dataplane
thread which may also be accessing the BlockDriverState.

Note that this command operates on both bs and a node in its chain
(image_bs).  The bdrv_chain_contains(bs, image_bs) check guarantees that
bs and image_bs are in the same AioContext.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2 files changed
tree: e93bd7014305629874c116d50cea985ce097c041
  1. audio/
  2. backends/
  3. block/
  4. bsd-user/
  5. default-configs/
  6. disas/
  7. docs/
  8. fpu/
  9. fsdev/
  10. gdb-xml/
  11. hw/
  12. include/
  13. libcacard/
  14. libdecnumber/
  15. linux-headers/
  16. linux-user/
  17. net/
  18. pc-bios/
  19. po/
  20. qapi/
  21. qga/
  22. qobject/
  23. qom/
  24. roms/
  25. scripts/
  26. slirp/
  27. stubs/
  28. sysconfigs/
  29. target-alpha/
  30. target-arm/
  31. target-cris/
  32. target-i386/
  33. target-lm32/
  34. target-m68k/
  35. target-microblaze/
  36. target-mips/
  37. target-moxie/
  38. target-openrisc/
  39. target-ppc/
  40. target-s390x/
  41. target-sh4/
  42. target-sparc/
  43. target-tricore/
  44. target-unicore32/
  45. target-xtensa/
  46. tcg/
  47. tests/
  48. trace/
  49. ui/
  50. util/
  51. dtc
  52. pixman
  53. .exrc
  54. .gitignore
  55. .gitmodules
  56. .mailmap
  57. .travis.yml
  58. accel.c
  59. aio-posix.c
  60. aio-win32.c
  61. arch_init.c
  62. async.c
  63. balloon.c
  64. block-migration.c
  65. block.c
  66. blockdev-nbd.c
  67. blockdev.c
  68. blockjob.c
  69. bootdevice.c
  70. bt-host.c
  71. bt-vhci.c
  72. Changelog
  73. CODING_STYLE
  74. configure
  75. COPYING
  76. COPYING.LIB
  77. coroutine-gthread.c
  78. coroutine-sigaltstack.c
  79. coroutine-ucontext.c
  80. coroutine-win32.c
  81. cpu-exec.c
  82. cpus.c
  83. cputlb.c
  84. device-hotplug.c
  85. device_tree.c
  86. disas.c
  87. dma-helpers.c
  88. dump.c
  89. exec.c
  90. gdbstub.c
  91. HACKING
  92. hmp-commands.hx
  93. hmp.c
  94. hmp.h
  95. iohandler.c
  96. ioport.c
  97. iothread.c
  98. kvm-all.c
  99. kvm-stub.c
  100. LICENSE
  101. main-loop.c
  102. MAINTAINERS
  103. Makefile
  104. Makefile.objs
  105. Makefile.target
  106. memory.c
  107. memory_mapping.c
  108. migration-exec.c
  109. migration-fd.c
  110. migration-rdma.c
  111. migration-tcp.c
  112. migration-unix.c
  113. migration.c
  114. module-common.c
  115. monitor.c
  116. nbd.c
  117. numa.c
  118. os-posix.c
  119. os-win32.c
  120. page_cache.c
  121. qapi-schema.json
  122. qdev-monitor.c
  123. qdict-test-data.txt
  124. qemu-bridge-helper.c
  125. qemu-char.c
  126. qemu-coroutine-io.c
  127. qemu-coroutine-lock.c
  128. qemu-coroutine-sleep.c
  129. qemu-coroutine.c
  130. qemu-doc.texi
  131. qemu-file-stdio.c
  132. qemu-file-unix.c
  133. qemu-file.c
  134. qemu-img-cmds.hx
  135. qemu-img.c
  136. qemu-img.texi
  137. qemu-io-cmds.c
  138. qemu-io.c
  139. qemu-log.c
  140. qemu-nbd.c
  141. qemu-nbd.texi
  142. qemu-options-wrapper.h
  143. qemu-options.h
  144. qemu-options.hx
  145. qemu-seccomp.c
  146. qemu-tech.texi
  147. qemu-timer.c
  148. qemu.nsi
  149. qemu.sasl
  150. qmp-commands.hx
  151. qmp.c
  152. qtest.c
  153. README
  154. rules.mak
  155. savevm.c
  156. softmmu_template.h
  157. spice-qemu-char.c
  158. tcg-runtime.c
  159. tci.c
  160. thread-pool.c
  161. thunk.c
  162. tpm.c
  163. trace-events
  164. translate-all.c
  165. translate-all.h
  166. user-exec.c
  167. VERSION
  168. version.rc
  169. vl.c
  170. vmstate.c
  171. xbzrle.c
  172. xen-common-stub.c
  173. xen-common.c
  174. xen-hvm-stub.c
  175. xen-hvm.c
  176. xen-mapcache.c