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Date: Thu, 15 Sep 2011 16:47:17 +0300 From: Amir Goldstein <amir73il@...il.com> To: "Ted Ts'o" <tytso@....edu> Cc: Andreas Dilger <adilger.kernel@...ger.ca>, "Darrick J. Wong" <djwong@...ibm.com>, Sunil Mushran <sunil.mushran@...cle.com>, Andi Kleen <andi@...stfloor.org>, Mingming Cao <cmm@...ibm.com>, Joel Becker <jlbec@...lplan.org>, linux-ext4@...r.kernel.org, Coly Li <colyli@...il.com>, Yongqiang Yang <xiaoqiangnk@...il.com> Subject: Re: [PATCH] libext2fs: reserve exclude bitmap fields in group descriptor On Thu, Sep 15, 2011 at 4:16 PM, Ted Ts'o <tytso@....edu> wrote: > On Thu, Sep 15, 2011 at 09:50:20AM +0300, Amir Goldstein wrote: >> -#define EXT2_FEATURE_COMPAT_EXCLUDE_INODE 0x0080 >> +/* #define EXT2_FEATURE_COMPAT_EXCLUDE_INODE 0x0080 not used */ >> +#define EXT2_FEATURE_COMPAT_EXCLUDE_BITMAP 0x0100 > > Why this change? Is it because you're already using 0x0100 in > shipping systems? > I am using 0x80 in shipping systems and it signifies something a bit different then the proposed 0x100. EXCLUDE_INODE means that special inode 9 is used to reference exclude bitmap blocks. EXCLUDE_BITMAP means that exclude bitmap blocks are referenced from group descriptors. With this distinction it will be easier for me to make the migration. Thanks, Amir. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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