[patch-2.3.41-pre4] small optimization of access(2)

Horst von Brand vonbrand en sleipnir.valparaiso.cl
Sab Ene 29 07:19:47 CST 2000


Tigran Aivazian <tigran en sco.COM> said:
> This patch reduces the length of holding kernel lock and removes one extra
> initialization and a goto label from sys_access() and uses if(mode &
> ~mask) instead of if(mode != (mode&mask)).

Careful!

  mode = 0xFF0F
  mask = 0xF000

  mode & ~mask == 0x0F00, i.e., true
  mode & mask  == 0xFF00  != mode
-- 
Horst von Brand                             vonbrand en sleipnir.valparaiso.cl
Casilla 9G, Viña del Mar, Chile                               +56 32 672616

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