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Google Android Gingerbread Is Using EXT4

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  • #11
    Originally posted by deanjo View Post
    Since when?
    Since forever. Unless of course you place an ftl before the nand

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    • #12
      Originally posted by _txf_ View Post
      Since forever. Unless of course you place an ftl before the nand
      He clarified his post. His original statement was broad and vague.

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      • #13
        It's very simple.
        When using raw flash access, they use YAFFS (they use it on the Nexus S too!!)
        When using flash that has a disk emulation layer, like the Samsung's oneNand/mNand, then they use EXT4, because YAFFS doesn't work on that, and wear leveling is already implemented at the emulation layer.

        That's what the Nexus S also uses, and the Galaxy S uses (the SGS only uses that in fact, the Nexus S has a YAFFS part and a EXT4 part)

        They're both just fine and using EXT4 on top isnt especially always faster or slower than YAFFS, it depends on the chip implementation too.

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        • #14
          can only edit post for 1min and phoronixwent down for 2 min when i edited lol..
          Anyway http://project-voodoo.org/ to make ur SGS use EXT4, its not a bad hardware memory issue but a software bug. Also XXJPU firmware fixes it (but its a beta)

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          • #15
            What's the benefit for Phones?

            Journalled file systems on a flash device make no sense.

            Most Android phones run in memory anyhow, 512MB if you're lucky to have a phone with that much space in memory.

            2-16GB file systems are better off with Fat32. Due to copywrite problems they possibly be better off with ext2.

            1. barrier=0 or barrier=1 ?

            2. Does Android write data to the file system like Tso says it should?

            3. fsck.ext4 included in the tools?

            * When will we get a proper task-killer from G0ogle?

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            • #16
              Originally posted by squirrl View Post
              Journalled file systems on a flash device make no sense.

              Most Android phones run in memory anyhow, 512MB if you're lucky to have a phone with that much space in memory.

              2-16GB file systems are better off with Fat32. Due to copywrite problems they possibly be better off with ext2.

              1. barrier=0 or barrier=1 ?

              2. Does Android write data to the file system like Tso says it should?

              3. fsck.ext4 included in the tools?

              * When will we get a proper task-killer from G0ogle?
              You obviously don't understand filesystems, different memories and operating systems in general "Android run in memory" (so naive)

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              • #17
                Originally posted by squirrl View Post
                Journalled file systems on a flash device make no sense.
                I think it's rather your sentence (used in such a broad way) that makes no sense.

                And btw, especially Ext4 has a "no journal mode", no need to go back to the old Ext2.

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                • #18
                  Now if only the drivers where more modular:
                  "and updated OpenGL ES graphics drivers"
                  Tying drivers with OS upgrades is dumb people.

                  (I know updated base drivers is good.
                  But the thing is that this is a sign of drivers being bound to certani OS upgrades.)

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                  • #19
                    Originally posted by plonoma View Post
                    Now if only the drivers where more modular:
                    "and updated OpenGL ES graphics drivers"
                    Tying drivers with OS upgrades is dumb people.

                    (I know updated base drivers is good.
                    But the thing is that this is a sign of drivers being bound to certani OS upgrades.)
                    The GL drivers for most android devices are 100% proprietary, not part of AOSP. If they have updated the GL drivers, they are referring to the software rendering.

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