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From: Colin Percival <cperciva@FreeBSD.org>
Date: Sun, 29 Feb 2004 07:58:54 -0800 (PST)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org,
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Subject: cvs commit: src/sys/dev/md md.c
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cperciva    2004/02/29 07:58:54 PST

  FreeBSD src repository

  Modified files:
    sys/dev/md           md.c 
  Log:
  Use DEV_BSIZE byte sectors instead of PAGE_SIZE byte sectors for
  swap-backed memory disks.  This reduces filesystem allocation overhead
  and makes swap-backed memory disks compatible with broken code (dd,
  for example) which expects to see 512 byte sectors.  The size of a
  swap-backed memory disk must still be a multiple of the page size.
  
  When performing page-aligned operations, this change has zero
  performance impact.
  
  Reviewed by:    phk
  Approved by:    rwatson (mentor)
  
  Revision  Changes    Path
  1.112     +49 -19    src/sys/dev/md/md.c