cvs commit: src/sys/fs/ntfs ntfs_subr.c

[Tim J. Robbins]

tjr         2003/06/20 07:52:52 PDT

  FreeBSD src repository

  Modified files:
    sys/fs/ntfs          ntfs_subr.c 
  Log:
  Merge from NetBSD src/sys/ntfs/ntfs_subr.c 1.5 & 1.30 (jdolecek):
  - Avoid calling bread() with different sizes on the same blkno.
    Although the buffer cache is designed to handle differing size
    buffers, it erroneously tries to write the incorrectly-sized buffer
    buffer back to disk before reading the correctly-sized one, even
    when it's not dirty. This behaviour caused a panic for read-only
    NTFS mounts when INVARIANTS was enabled ("bundirty: buffer x still
    on queue y"), reported by NAKAJI Hiroyuki.
  - Fix a bug in the code handling holes: a variable was incremented
    instead of decremented, which could cause an infinite loop.
  
  Revision  Changes    Path
  1.30      +15 -1     src/sys/fs/ntfs/ntfs_subr.c