1. 18 1月, 2009 1 次提交
  2. 07 1月, 2009 1 次提交
  3. 31 12月, 2008 7 次提交
  4. 23 12月, 2008 2 次提交
  5. 03 12月, 2008 4 次提交
  6. 22 11月, 2008 3 次提交
    • A
      UBIFS: pre-allocate bulk-read buffer · 3477d204
      Artem Bityutskiy 提交于
      To avoid memory allocation failure during bulk-read, pre-allocate
      a bulk-read buffer, so that if there is only one bulk-reader at
      a time, it would just use the pre-allocated buffer and would not
      do any memory allocation. However, if there are more than 1 bulk-
      reader, then only one reader would use the pre-allocated buffer,
      while the other reader would allocate the buffer for itself.
      Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
      3477d204
    • A
      UBIFS: do not allocate too much · 6c0c42cd
      Artem Bityutskiy 提交于
      Bulk-read allocates 128KiB or more using kmalloc. The allocation
      starts failing often when the memory gets fragmented. UBIFS still
      works fine in this case, because it falls-back to standard
      (non-optimized) read method, though. This patch teaches bulk-read
      to allocate exactly the amount of memory it needs, instead of
      allocating 128KiB every time.
      
      This patch is also a preparation to the further fix where we'll
      have a pre-allocated bulk-read buffer as well. For example, now
      the @bu object is prepared in 'ubifs_bulk_read()', so we could
      path either pre-allocated or allocated information to
      'ubifs_do_bulk_read()' later. Or teaching 'ubifs_do_bulk_read()'
      not to allocate 'bu->buf' if it is already there.
      Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
      6c0c42cd
    • A
      UBIFS: do not print scary memory allocation warnings · 39ce81ce
      Artem Bityutskiy 提交于
      Bulk-read allocates a lot of memory with 'kmalloc()', and when it
      is/gets fragmented 'kmalloc()' fails with a scarry warning. But
      because bulk-read is just an optimization, UBIFS keeps working fine.
      Supress the warning by passing __GFP_NOWARN option to 'kmalloc()'.
      
      This patch also introduces a macro for the magic 128KiB constant.
      This is just neater.
      
      Note, this is not really fixes the problem we had, but just hides
      the warnings. The further patches fix the problem.
      Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
      39ce81ce
  7. 19 10月, 2008 1 次提交
  8. 14 10月, 2008 1 次提交
  9. 30 9月, 2008 7 次提交
  10. 17 9月, 2008 1 次提交
  11. 03 9月, 2008 1 次提交
  12. 31 8月, 2008 4 次提交
    • A
      UBIFS: fill f_fsid · b3385c27
      Artem Bityutskiy 提交于
      UBIFS stores 16-bit UUID in the superblock, and it is a good
      idea to return part of it in 'f_fsid' filed of kstatfs structure.
      Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
      b3385c27
    • A
      UBIFS: improve statfs reporting even more · 7dad181b
      Artem Bityutskiy 提交于
      Since free space we report in statfs is file size which should
      fit to the FS - change the way we calculate free space and use
      leb_overhead instead of dark_wm in calculations.
      
      Results of "freespace" test (120MiB volume, 16KiB LEB size,
      512 bytes page size). Before the change:
      
      freespace: Test 1: fill the space we have 3 times
      freespace: was free: 85204992 bytes 81.3 MiB, wrote: 96489472 bytes 92.0 MiB, delta: 11284480 bytes 10.8 MiB, wrote 13.2% more than predicted
      freespace: was free: 83554304 bytes 79.7 MiB, wrote: 96489472 bytes 92.0 MiB, delta: 12935168 bytes 12.3 MiB, wrote 15.5% more than predicted
      freespace: was free: 83554304 bytes 79.7 MiB, wrote: 96493568 bytes 92.0 MiB, delta: 12939264 bytes 12.3 MiB, wrote 15.5% more than predicted
      freespace: Test 1 finished
      
      freespace: Test 2: gradually lessen amount of free space and fill the FS
      freespace: do 10 steps, lessen free space by 7596218 bytes 7.2 MiB each time
      freespace: was free: 78675968 bytes 75.0 MiB, wrote: 88903680 bytes 84.8 MiB, delta: 10227712 bytes 9.8 MiB, wrote 13.0% more than predicted
      freespace: was free: 72015872 bytes 68.7 MiB, wrote: 81514496 bytes 77.7 MiB, delta: 9498624 bytes 9.1 MiB, wrote 13.2% more than predicted
      freespace: was free: 63938560 bytes 61.0 MiB, wrote: 72589312 bytes 69.2 MiB, delta: 8650752 bytes 8.2 MiB, wrote 13.5% more than predicted
      freespace: was free: 56127488 bytes 53.5 MiB, wrote: 63762432 bytes 60.8 MiB, delta: 7634944 bytes 7.3 MiB, wrote 13.6% more than predicted
      freespace: was free: 48336896 bytes 46.1 MiB, wrote: 54935552 bytes 52.4 MiB, delta: 6598656 bytes 6.3 MiB, wrote 13.7% more than predicted
      freespace: was free: 40587264 bytes 38.7 MiB, wrote: 46157824 bytes 44.0 MiB, delta: 5570560 bytes 5.3 MiB, wrote 13.7% more than predicted
      freespace: was free: 32841728 bytes 31.3 MiB, wrote: 37384192 bytes 35.7 MiB, delta: 4542464 bytes 4.3 MiB, wrote 13.8% more than predicted
      freespace: was free: 25100288 bytes 23.9 MiB, wrote: 28618752 bytes 27.3 MiB, delta: 3518464 bytes 3.4 MiB, wrote 14.0% more than predicted
      freespace: was free: 17342464 bytes 16.5 MiB, wrote: 19841024 bytes 18.9 MiB, delta: 2498560 bytes 2.4 MiB, wrote 14.4% more than predicted
      freespace: was free: 9605120 bytes 9.2 MiB, wrote: 11063296 bytes 10.6 MiB, delta: 1458176 bytes 1.4 MiB, wrote 15.2% more than predicted
      freespace: Test 2 finished
      
      freespace: Test 3: gradually lessen amount of free space by trashing and fill the FS
      freespace: do 10 steps, lessen free space by 7606272 bytes 7.3 MiB each time
      freespace: trashing: was free: 83668992 bytes 79.8 MiB, need free: 7606272 bytes 7.3 MiB, files created: 248297, delete 225724 (90.9% of them)
      freespace: was free: 70803456 bytes 67.5 MiB, wrote: 82485248 bytes 78.7 MiB, delta: 11681792 bytes 11.1 MiB, wrote 16.5% more than predicted
      freespace: trashing: was free: 81080320 bytes 77.3 MiB, need free: 15212544 bytes 14.5 MiB, files created: 248711, delete 202047 (81.2% of them)
      freespace: was free: 59867136 bytes 57.1 MiB, wrote: 71897088 bytes 68.6 MiB, delta: 12029952 bytes 11.5 MiB, wrote 20.1% more than predicted
      freespace: trashing: was free: 82243584 bytes 78.4 MiB, need free: 22818816 bytes 21.8 MiB, files created: 248866, delete 179817 (72.3% of them)
      freespace: was free: 50905088 bytes 48.5 MiB, wrote: 63168512 bytes 60.2 MiB, delta: 12263424 bytes 11.7 MiB, wrote 24.1% more than predicted
      freespace: trashing: was free: 83402752 bytes 79.5 MiB, need free: 30425088 bytes 29.0 MiB, files created: 248920, delete 158114 (63.5% of them)
      freespace: was free: 42651648 bytes 40.7 MiB, wrote: 55406592 bytes 52.8 MiB, delta: 12754944 bytes 12.2 MiB, wrote 29.9% more than predicted
      freespace: trashing: was free: 84402176 bytes 80.5 MiB, need free: 38031360 bytes 36.3 MiB, files created: 248709, delete 136641 (54.9% of them)
      freespace: was free: 35233792 bytes 33.6 MiB, wrote: 48250880 bytes 46.0 MiB, delta: 13017088 bytes 12.4 MiB, wrote 36.9% more than predicted
      freespace: trashing: was free: 82530304 bytes 78.7 MiB, need free: 45637632 bytes 43.5 MiB, files created: 248778, delete 111208 (44.7% of them)
      freespace: was free: 27287552 bytes 26.0 MiB, wrote: 40267776 bytes 38.4 MiB, delta: 12980224 bytes 12.4 MiB, wrote 47.6% more than predicted
      freespace: trashing: was free: 85114880 bytes 81.2 MiB, need free: 53243904 bytes 50.8 MiB, files created: 248508, delete 93052 (37.4% of them)
      freespace: was free: 22437888 bytes 21.4 MiB, wrote: 35328000 bytes 33.7 MiB, delta: 12890112 bytes 12.3 MiB, wrote 57.4% more than predicted
      freespace: trashing: was free: 84103168 bytes 80.2 MiB, need free: 60850176 bytes 58.0 MiB, files created: 248637, delete 68743 (27.6% of them)
      freespace: was free: 15536128 bytes 14.8 MiB, wrote: 28319744 bytes 27.0 MiB, delta: 12783616 bytes 12.2 MiB, wrote 82.3% more than predicted
      freespace: trashing: was free: 84357120 bytes 80.4 MiB, need free: 68456448 bytes 65.3 MiB, files created: 248567, delete 46852 (18.8% of them)
      freespace: was free: 9015296 bytes 8.6 MiB, wrote: 22044672 bytes 21.0 MiB, delta: 13029376 bytes 12.4 MiB, wrote 144.5% more than predicted
      freespace: trashing: was free: 84942848 bytes 81.0 MiB, need free: 76062720 bytes 72.5 MiB, files created: 248636, delete 25993 (10.5% of them)
      freespace: was free: 6086656 bytes 5.8 MiB, wrote: 8331264 bytes 7.9 MiB, delta: 2244608 bytes 2.1 MiB, wrote 36.9% more than predicted
      freespace: Test 3 finished
      
      freespace: finished successfully
      
      After the change:
      
      freespace: Test 1: fill the space we have 3 times
      freespace: was free: 94048256 bytes 89.7 MiB, wrote: 96489472 bytes 92.0 MiB, delta: 2441216 bytes 2.3 MiB, wrote 2.6% more than predicted
      freespace: was free: 92246016 bytes 88.0 MiB, wrote: 96493568 bytes 92.0 MiB, delta: 4247552 bytes 4.1 MiB, wrote 4.6% more than predicted
      freespace: was free: 92254208 bytes 88.0 MiB, wrote: 96489472 bytes 92.0 MiB, delta: 4235264 bytes 4.0 MiB, wrote 4.6% more than predicted
      freespace: Test 1 finished
      
      freespace: Test 2: gradually lessen amount of free space and fill the FS
      freespace: do 10 steps, lessen free space by 8386001 bytes 8.0 MiB each time
      freespace: was free: 86605824 bytes 82.6 MiB, wrote: 88252416 bytes 84.2 MiB, delta: 1646592 bytes 1.6 MiB, wrote 1.9% more than predicted
      freespace: was free: 78667776 bytes 75.0 MiB, wrote: 80715776 bytes 77.0 MiB, delta: 2048000 bytes 2.0 MiB, wrote 2.6% more than predicted
      freespace: was free: 69615616 bytes 66.4 MiB, wrote: 71630848 bytes 68.3 MiB, delta: 2015232 bytes 1.9 MiB, wrote 2.9% more than predicted
      freespace: was free: 61018112 bytes 58.2 MiB, wrote: 62783488 bytes 59.9 MiB, delta: 1765376 bytes 1.7 MiB, wrote 2.9% more than predicted
      freespace: was free: 52424704 bytes 50.0 MiB, wrote: 53968896 bytes 51.5 MiB, delta: 1544192 bytes 1.5 MiB, wrote 2.9% more than predicted
      freespace: was free: 43880448 bytes 41.8 MiB, wrote: 45199360 bytes 43.1 MiB, delta: 1318912 bytes 1.3 MiB, wrote 3.0% more than predicted
      freespace: was free: 35332096 bytes 33.7 MiB, wrote: 36425728 bytes 34.7 MiB, delta: 1093632 bytes 1.0 MiB, wrote 3.1% more than predicted
      freespace: was free: 26771456 bytes 25.5 MiB, wrote: 27643904 bytes 26.4 MiB, delta: 872448 bytes 852.0 KiB, wrote 3.3% more than predicted
      freespace: was free: 18231296 bytes 17.4 MiB, wrote: 18878464 bytes 18.0 MiB, delta: 647168 bytes 632.0 KiB, wrote 3.5% more than predicted
      freespace: was free: 9674752 bytes 9.2 MiB, wrote: 10088448 bytes 9.6 MiB, delta: 413696 bytes 404.0 KiB, wrote 4.3% more than predicted
      freespace: Test 2 finished
      
      freespace: Test 3: gradually lessen amount of free space by trashing and fill the FS
      freespace: do 10 steps, lessen free space by 8397544 bytes 8.0 MiB each time
      freespace: trashing: was free: 92372992 bytes 88.1 MiB, need free: 8397552 bytes 8.0 MiB, files created: 248296, delete 225723 (90.9% of them)
      freespace: was free: 71909376 bytes 68.6 MiB, wrote: 82472960 bytes 78.7 MiB, delta: 10563584 bytes 10.1 MiB, wrote 14.7% more than predicted
      freespace: trashing: was free: 88989696 bytes 84.9 MiB, need free: 16795096 bytes 16.0 MiB, files created: 248794, delete 201838 (81.1% of them)
      freespace: was free: 60354560 bytes 57.6 MiB, wrote: 71782400 bytes 68.5 MiB, delta: 11427840 bytes 10.9 MiB, wrote 18.9% more than predicted
      freespace: trashing: was free: 90304512 bytes 86.1 MiB, need free: 25192640 bytes 24.0 MiB, files created: 248733, delete 179342 (72.1% of them)
      freespace: was free: 51187712 bytes 48.8 MiB, wrote: 62943232 bytes 60.0 MiB, delta: 11755520 bytes 11.2 MiB, wrote 23.0% more than predicted
      freespace: trashing: was free: 91209728 bytes 87.0 MiB, need free: 33590184 bytes 32.0 MiB, files created: 248779, delete 157160 (63.2% of them)
      freespace: was free: 42704896 bytes 40.7 MiB, wrote: 55050240 bytes 52.5 MiB, delta: 12345344 bytes 11.8 MiB, wrote 28.9% more than predicted
      freespace: trashing: was free: 92700672 bytes 88.4 MiB, need free: 41987728 bytes 40.0 MiB, files created: 248848, delete 136135 (54.7% of them)
      freespace: was free: 35250176 bytes 33.6 MiB, wrote: 48115712 bytes 45.9 MiB, delta: 12865536 bytes 12.3 MiB, wrote 36.5% more than predicted
      freespace: trashing: was free: 93986816 bytes 89.6 MiB, need free: 50385272 bytes 48.1 MiB, files created: 248723, delete 115385 (46.4% of them)
      freespace: was free: 29995008 bytes 28.6 MiB, wrote: 41582592 bytes 39.7 MiB, delta: 11587584 bytes 11.1 MiB, wrote 38.6% more than predicted
      freespace: trashing: was free: 91881472 bytes 87.6 MiB, need free: 58782816 bytes 56.1 MiB, files created: 248645, delete 89569 (36.0% of them)
      freespace: was free: 22511616 bytes 21.5 MiB, wrote: 34705408 bytes 33.1 MiB, delta: 12193792 bytes 11.6 MiB, wrote 54.2% more than predicted
      freespace: trashing: was free: 91774976 bytes 87.5 MiB, need free: 67180360 bytes 64.1 MiB, files created: 248580, delete 66616 (26.8% of them)
      freespace: was free: 16908288 bytes 16.1 MiB, wrote: 26898432 bytes 25.7 MiB, delta: 9990144 bytes 9.5 MiB, wrote 59.1% more than predicted
      freespace: trashing: was free: 92450816 bytes 88.2 MiB, need free: 75577904 bytes 72.1 MiB, files created: 248654, delete 45381 (18.3% of them)
      freespace: was free: 10170368 bytes 9.7 MiB, wrote: 19111936 bytes 18.2 MiB, delta: 8941568 bytes 8.5 MiB, wrote 87.9% more than predicted
      freespace: trashing: was free: 93282304 bytes 89.0 MiB, need free: 83975448 bytes 80.1 MiB, files created: 248513, delete 24794 (10.0% of them)
      freespace: was free: 3911680 bytes 3.7 MiB, wrote: 7872512 bytes 7.5 MiB, delta: 3960832 bytes 3.8 MiB, wrote 101.3% more than predicted
      freespace: Test 3 finished
      
      freespace: finished successfully
      Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
      7dad181b
    • A
      UBIFS: introduce LEB overhead · 9bbb5726
      Artem Bityutskiy 提交于
      This is a preparational patch for the following statfs()
      report fix.
      Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
      9bbb5726
    • A
      UBIFS: push empty flash hack down · 9e5de354
      Artem Bityutskiy 提交于
      We have a hack which forces the amount of flash space to be
      equivalent to 'c->blocks_cnt' in case of empty FS. This is
      to make users happy and see '%0' used in 'df' when they
      mount an empty FS. This hack is not needed in
      'ubifs_calc_available()', but it is only needed the caller,
      in 'ubifs_budg_get_free_space()'. So push it down there.
      Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
      9e5de354
  13. 13 8月, 2008 7 次提交