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qemu / qemu / effecce6bcb830a661c882d7299b53382b56a131
commiteffecce6bcb830a661c882d7299b53382b56a131[log] [tgz]
authorKevin Wolf <kwolf@redhat.com>Fri Aug 16 11:48:17 2019 +0200
committerKevin Wolf <kwolf@redhat.com>Tue Sep 10 08:58:43 2019 +0200
tree2b529eae7620e38cd000c73718102e495f3363f3
parent6b9d62c2a9e83bbad73fb61406f0ff69b46ff6f3 [diff]
file-posix: Fix has_write_zeroes after NO_FALLBACK

If QEMU_AIO_NO_FALLBACK is given, we always return failure and don't
even try to use the BLKZEROOUT ioctl. In this failure case, we shouldn't
disable has_write_zeroes because we didn't learn anything about the
ioctl. The next request might not set QEMU_AIO_NO_FALLBACK and we can
still use the ioctl then.

Fixes: 738301e1175
Reported-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
1 file changed
tree: 2b529eae7620e38cd000c73718102e495f3363f3
  1. accel/
  2. audio/
  3. authz/
  4. backends/
  5. block/
  6. bsd-user/
  7. chardev/
  8. contrib/
  9. crypto/
  10. default-configs/
  11. disas/
  12. docs/
  13. dump/
  14. fpu/
  15. fsdev/
  16. gdb-xml/
  17. hw/
  18. include/
  19. io/
  20. libdecnumber/
  21. linux-headers/
  22. linux-user/
  23. migration/
  24. monitor/
  25. nbd/
  26. net/
  27. pc-bios/
  28. po/
  29. python/
  30. qapi/
  31. qga/
  32. qobject/
  33. qom/
  34. replay/
  35. roms/
  36. scripts/
  37. scsi/
  38. stubs/
  39. target/
  40. tcg/
  41. tests/
  42. trace/
  43. ui/
  44. util/
  45. capstone
  46. dtc
  47. slirp
  48. .cirrus.yml
  49. .dir-locals.el
  50. .editorconfig
  51. .exrc
  52. .gdbinit
  53. .gitignore
  54. .gitlab-ci.yml
  55. .gitmodules
  56. .gitpublish
  57. .mailmap
  58. .patchew.yml
  59. .shippable.yml
  60. .travis.yml
  61. arch_init.c
  62. balloon.c
  63. block.c
  64. blockdev-nbd.c
  65. blockdev.c
  66. blockjob.c
  67. bootdevice.c
  68. bt-host.c
  69. bt-vhci.c
  70. Changelog
  71. CODING_STYLE.rst
  72. configure
  73. COPYING
  74. COPYING.LIB
  75. cpus-common.c
  76. cpus.c
  77. device-hotplug.c
  78. device_tree.c
  79. disas.c
  80. dma-helpers.c
  81. exec.c
  82. gdbstub.c
  83. gitdm.config
  84. hmp-commands-info.hx
  85. hmp-commands.hx
  86. ioport.c
  87. iothread.c
  88. job-qmp.c
  89. job.c
  90. Kconfig.host
  91. LICENSE
  92. MAINTAINERS
  93. Makefile
  94. Makefile.objs
  95. Makefile.target
  96. memory.c
  97. memory_ldst.inc.c
  98. memory_mapping.c
  99. module-common.c
  100. os-posix.c
  101. os-win32.c
  102. qdev-monitor.c
  103. qemu-bridge-helper.c
  104. qemu-deprecated.texi
  105. qemu-doc.texi
  106. qemu-edid.c
  107. qemu-ga.texi
  108. qemu-img-cmds.hx
  109. qemu-img.c
  110. qemu-img.texi
  111. qemu-io-cmds.c
  112. qemu-io.c
  113. qemu-keymap.c
  114. qemu-nbd.c
  115. qemu-nbd.texi
  116. qemu-option-trace.texi
  117. qemu-options-wrapper.h
  118. qemu-options.h
  119. qemu-options.hx
  120. qemu-seccomp.c
  121. qemu-tech.texi
  122. qemu.nsi
  123. qemu.sasl
  124. qtest.c
  125. README.rst
  126. replication.c
  127. replication.h
  128. rules.mak
  129. thunk.c
  130. tpm.c
  131. trace-events
  132. VERSION
  133. version.rc
  134. vl.c