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* [Qemu-devel] [PATCH v3 0/7] backup improvements
@ 2019-08-10 19:31 Vladimir Sementsov-Ogievskiy
  2019-08-10 19:31 ` [Qemu-devel] [PATCH v3 1/7] block/backup: deal with zero detection Vladimir Sementsov-Ogievskiy
                   ` (6 more replies)
  0 siblings, 7 replies; 24+ messages in thread
From: Vladimir Sementsov-Ogievskiy @ 2019-08-10 19:31 UTC (permalink / raw)
  To: qemu-block
  Cc: fam, kwolf, vsementsov, armbru, qemu-devel, mreitz, stefanha, den, jsnow

Hi all!

There are some fixes and refactorings I need on my way to resend
my backup-top series. It's obvious now that I need to share copying
code between backup and backup-top, as backup copying code becomes
smarter and more complicated. So the goal of the series is to make copying
code more share-able.

Based-on: https://github.com/jnsnow/qemu bitmaps 

v3:
03: Ha, fix real bug, we shouldn't touch src before handling write-zero,
    as src may be NULL. So, replace align and max_transfer calculation
    together with max_transfer == 0 check. Drop comment, as there is no
    special place for it now..
04: add Max's r-b:
06-07: rewrite to keep bounce_buffer sharing between iterations and to
       limit allocation [Eric]

v2 (by Max's comments):

02: Add Max's r-b
03: - split out backup changes to 03
   - handle common max_transfer = 0 case
04: splat out from 02
06: fix allocation size
07: - rebase on 06 changes
   - add Max's r-b

two patches are dropped or postponed for the next step

Vladimir Sementsov-Ogievskiy (7):
  block/backup: deal with zero detection
  block/backup: refactor write_flags
  block/io: handle alignment and max_transfer for copy_range
  block/backup: drop handling of max_transfer for copy_range
  block/backup: fix backup_cow_with_offload for last cluster
  block/backup: teach backup_cow_with_bounce_buffer to copy more at once
  block/backup: merge duplicated logic into backup_do_cow

 block/backup.c | 154 ++++++++++++++++++++++---------------------------
 block/io.c     |  44 +++++++++++---
 blockdev.c     |   8 +--
 3 files changed, 110 insertions(+), 96 deletions(-)

-- 
2.18.0



^ permalink raw reply	[flat|nested] 24+ messages in thread

end of thread, other threads:[~2019-08-20 15:21 UTC | newest]

Thread overview: 24+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-08-10 19:31 [Qemu-devel] [PATCH v3 0/7] backup improvements Vladimir Sementsov-Ogievskiy
2019-08-10 19:31 ` [Qemu-devel] [PATCH v3 1/7] block/backup: deal with zero detection Vladimir Sementsov-Ogievskiy
2019-08-10 19:31 ` [Qemu-devel] [PATCH v3 2/7] block/backup: refactor write_flags Vladimir Sementsov-Ogievskiy
2019-08-10 19:31 ` [Qemu-devel] [PATCH v3 3/7] block/io: handle alignment and max_transfer for copy_range Vladimir Sementsov-Ogievskiy
2019-08-12 14:48   ` Max Reitz
2019-08-20 15:18     ` Vladimir Sementsov-Ogievskiy
2019-08-10 19:31 ` [Qemu-devel] [PATCH v3 4/7] block/backup: drop handling of " Vladimir Sementsov-Ogievskiy
2019-08-10 19:31 ` [Qemu-devel] [PATCH v3 5/7] block/backup: fix backup_cow_with_offload for last cluster Vladimir Sementsov-Ogievskiy
2019-08-10 19:31 ` [Qemu-devel] [PATCH v3 6/7] block/backup: teach backup_cow_with_bounce_buffer to copy more at once Vladimir Sementsov-Ogievskiy
2019-08-12 15:10   ` Max Reitz
2019-08-12 15:47     ` Vladimir Sementsov-Ogievskiy
2019-08-12 16:11       ` Max Reitz
2019-08-12 16:37         ` Vladimir Sementsov-Ogievskiy
2019-08-13 14:14           ` Vladimir Sementsov-Ogievskiy
2019-08-13 14:23             ` Max Reitz
2019-08-13 14:39               ` Vladimir Sementsov-Ogievskiy
2019-08-13 14:57                 ` Max Reitz
2019-08-13 15:00                   ` Vladimir Sementsov-Ogievskiy
2019-08-13 15:02                     ` Max Reitz
2019-08-13 15:32                       ` Vladimir Sementsov-Ogievskiy
2019-08-13 16:30                         ` Max Reitz
2019-08-13 16:45                           ` Vladimir Sementsov-Ogievskiy
2019-08-13 16:51                             ` Max Reitz
2019-08-10 19:31 ` [Qemu-devel] [PATCH v3 7/7] block/backup: merge duplicated logic into backup_do_cow Vladimir Sementsov-Ogievskiy

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