cvs commit: src/sys/conf NOTES files options src/sys/fs/msdosfs msdosfs_fileno.c msdosfs_vfsops.c msdosfs_vnops.c msdosfsmount.h src/sys/modules/msdosfs Makefile

[Tim J. Robbins]

tjr         2004-07-03 13:22:39 UTC

  FreeBSD src repository

  Modified files:
    sys/conf             NOTES files options 
    sys/fs/msdosfs       msdosfs_vfsops.c msdosfs_vnops.c 
                         msdosfsmount.h 
    sys/modules/msdosfs  Makefile 
  Added files:
    sys/fs/msdosfs       msdosfs_fileno.c 
  Log:
  By popular request, add a workaround that allows large (>128GB or so)
  FAT32 filesystems to be mounted, subject to some fairly serious limitations.
  
  This works by extending the internal pseudo-inode-numbers generated from
  the file's starting cluster number to 64-bits, then creating a table
  mapping these into arbitrary 32-bit inode numbers, which can fit in
  struct dirent's d_fileno and struct vattr's va_fileid fields. The mappings
  do not persist across unmounts or reboots, so it's not possible to export
  these filesystems through NFS. The mapping table may grow to be rather
  large, and may grow large enough to exhaust kernel memory on filesystems
  with millions of files.
  
  Don't enable this option unless you understand the consequences.
  
  Revision  Changes    Path
  1.1241    +12 -0     src/sys/conf/NOTES
  1.923     +1 -0      src/sys/conf/files
  1.460     +3 -0      src/sys/conf/options
  1.1       +163 -0    src/sys/fs/msdosfs/msdosfs_fileno.c (new)
  1.121     +14 -0     src/sys/fs/msdosfs/msdosfs_vfsops.c
  1.148     +33 -13    src/sys/fs/msdosfs/msdosfs_vnops.c
  1.33      +23 -1     src/sys/fs/msdosfs/msdosfsmount.h
  1.21      +4 -1      src/sys/modules/msdosfs/Makefile