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qemu / qemu / 9f8e668eb1826434f61a63ff260d6c8b466e483a
commit9f8e668eb1826434f61a63ff260d6c8b466e483a[log] [tgz]
authorKevin Wolf <kwolf@redhat.com>Fri Sep 17 17:02:09 2010 +0200
committerKevin Wolf <kwolf@redhat.com>Tue Sep 21 15:39:42 2010 +0200
treee2838a4e50defffc9e148aaa63ed397da5302e1a
parent29216ed14f0bae35d1d9bb114a1aee7ee6837670 [diff]
qcow2: Get rid of additional sync on COW

We always have a sync for the refcount update when a new cluster is
allocated. If we move this past the COW, we can save an additional sync.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
1 file changed
tree: e2838a4e50defffc9e148aaa63ed397da5302e1a
  1. audio/
  2. block/
  3. bsd-user/
  4. darwin-user/
  5. default-configs/
  6. docs/
  7. fpu/
  8. fsdev/
  9. gdb-xml/
  10. hw/
  11. linux-user/
  12. net/
  13. pc-bios/
  14. QMP/
  15. roms/
  16. slirp/
  17. sysconfigs/
  18. target-alpha/
  19. target-arm/
  20. target-cris/
  21. target-i386/
  22. target-m68k/
  23. target-microblaze/
  24. target-mips/
  25. target-ppc/
  26. target-s390x/
  27. target-sh4/
  28. target-sparc/
  29. tcg/
  30. tests/
  31. ui/
  32. .gitignore
  33. .gitmodules
  34. a.out.h
  35. acl.c
  36. acl.h
  37. aes.c
  38. aes.h
  39. aio.c
  40. alpha-dis.c
  41. alpha.ld
  42. arch_init.c
  43. arch_init.h
  44. arm-dis.c
  45. arm-semi.c
  46. arm.ld
  47. async.c
  48. balloon.c
  49. balloon.h
  50. block-migration.c
  51. block-migration.h
  52. block.c
  53. block.h
  54. block_int.h
  55. blockdev.c
  56. blockdev.h
  57. bswap.h
  58. bt-host.c
  59. bt-host.h
  60. bt-vhci.c
  61. buffered_file.c
  62. buffered_file.h
  63. cache-utils.c
  64. cache-utils.h
  65. Changelog
  66. check-qdict.c
  67. check-qfloat.c
  68. check-qint.c
  69. check-qjson.c
  70. check-qlist.c
  71. check-qstring.c
  72. cmd.c
  73. cmd.h
  74. CODING_STYLE
  75. config.h
  76. configure
  77. console.c
  78. console.h
  79. COPYING
  80. COPYING.LIB
  81. cpu-all.h
  82. cpu-common.h
  83. cpu-defs.h
  84. cpu-exec.c
  85. cpus.c
  86. cpus.h
  87. create_config
  88. cris-dis.c
  89. cursor.c
  90. cursor_hidden.xpm
  91. cursor_left_ptr.xpm
  92. cutils.c
  93. def-helper.h
  94. device_tree.c
  95. device_tree.h
  96. dis-asm.h
  97. disas.c
  98. disas.h
  99. dma-helpers.c
  100. dma.h
  101. dyngen-exec.h
  102. elf.h
  103. envlist.c
  104. envlist.h
  105. exec-all.h
  106. exec.c
  107. feature_to_c.sh
  108. gdbstub.c
  109. gdbstub.h
  110. gen-icount.h
  111. HACKING
  112. host-utils.c
  113. host-utils.h
  114. hpet.h
  115. hppa-dis.c
  116. hppa.ld
  117. hxtool
  118. i386-dis.c
  119. i386.ld
  120. ia64-dis.c
  121. ia64.ld
  122. input.c
  123. ioport-user.c
  124. ioport.c
  125. ioport.h
  126. iov.c
  127. iov.h
  128. json-lexer.c
  129. json-lexer.h
  130. json-parser.c
  131. json-parser.h
  132. json-streamer.c
  133. json-streamer.h
  134. kvm-all.c
  135. kvm-stub.c
  136. kvm.h
  137. libfdt_env.h
  138. LICENSE
  139. linux-aio.c
  140. m68k-dis.c
  141. m68k-semi.c
  142. m68k.ld
  143. MAINTAINERS
  144. Makefile
  145. Makefile.dis
  146. Makefile.hw
  147. Makefile.objs
  148. Makefile.target
  149. Makefile.user
  150. microblaze-dis.c
  151. migration-exec.c
  152. migration-fd.c
  153. migration-tcp.c
  154. migration-unix.c
  155. migration.c
  156. migration.h
  157. mips-dis.c
  158. mips.ld
  159. module.c
  160. module.h
  161. monitor.c
  162. monitor.h
  163. nbd.c
  164. nbd.h
  165. net-checksum.c
  166. net.c
  167. net.h
  168. notify.c
  169. notify.h
  170. os-posix.c
  171. os-win32.c
  172. osdep.c
  173. osdep.h
  174. path.c
  175. pci-ids.txt
  176. poison.h
  177. posix-aio-compat.c
  178. ppc-dis.c
  179. ppc.ld
  180. ppc64.ld
  181. qbool.c
  182. qbool.h
  183. qdict-test-data.txt
  184. qdict.c
  185. qdict.h
  186. qemu-aio.h
  187. qemu-barrier.h
  188. qemu-binfmt-conf.sh
  189. qemu-char.c
  190. qemu-char.h
  191. qemu-common.h
  192. qemu-config.c
  193. qemu-config.h
  194. qemu-doc.texi
  195. qemu-error.c
  196. qemu-error.h
  197. qemu-img-cmds.hx
  198. qemu-img.c
  199. qemu-img.texi
  200. qemu-io.c
  201. qemu-lock.h
  202. qemu-log.h
  203. qemu-malloc.c
  204. qemu-monitor.hx
  205. qemu-nbd.c
  206. qemu-nbd.texi
  207. qemu-objects.h
  208. qemu-option.c
  209. qemu-option.h
  210. qemu-options.h
  211. qemu-options.hx
  212. qemu-os-posix.h
  213. qemu-os-win32.h
  214. qemu-queue.h
  215. qemu-sockets.c
  216. qemu-tech.texi
  217. qemu-thread.c
  218. qemu-thread.h
  219. qemu-timer.c
  220. qemu-timer.h
  221. qemu-tool.c
  222. qemu-x509.h
  223. qemu.sasl
  224. qemu_socket.h
  225. qerror.c
  226. qerror.h
  227. qfloat.c
  228. qfloat.h
  229. qint.c
  230. qint.h
  231. qjson.c
  232. qjson.h
  233. qlist.c
  234. qlist.h
  235. qobject.h
  236. qstring.c
  237. qstring.h
  238. range.h
  239. readline.c
  240. readline.h
  241. README
  242. rules.mak
  243. rwhandler.c
  244. rwhandler.h
  245. s390-dis.c
  246. s390.ld
  247. savevm.c
  248. sh4-dis.c
  249. simpletrace.c
  250. simpletrace.h
  251. simpletrace.py
  252. softmmu-semi.h
  253. softmmu_defs.h
  254. softmmu_exec.h
  255. softmmu_header.h
  256. softmmu_template.h
  257. sparc-dis.c
  258. sparc.ld
  259. sparc64.ld
  260. sysemu.h
  261. targphys.h
  262. tcg-runtime.c
  263. texi2pod.pl
  264. thunk.c
  265. thunk.h
  266. TODO
  267. trace-events
  268. tracetool
  269. translate-all.c
  270. uboot_image.h
  271. usb-bsd.c
  272. usb-linux.c
  273. usb-stub.c
  274. VERSION
  275. vgafont.h
  276. vl.c
  277. x86_64.ld