Be more explicit that we are not maintaining the x86 version anymore

Remove BYTE directives from kernel linker script

Mention we switched to xv6 on RISC-V

Avoid rereading the superblock in bfree

The superblock is read when the first process returns to
userspace (via the call to `iinit` from the first invocation of
`forkret`, when `first` is still set

Avoid rereading the superblock in bfree

The superblock is read when the first process returns to
userspace (via the call to `iinit` from the first invocation of
`forkret`, when `first` is still set to 1) and cached in a
global; it is treated as immutable from that point on. There is
no reason to re-read it in bfree.

Removing this call seems to have simply been missed in 8320d61b
when this general area was last touched. Remove it now to avoid
potential confusion.

Signed-off-by: Dan Cross <cross@gajendra.net>

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Removed unused `dirlookup` argument in `create`

The `off` argument to `dirlookup` is optional. It
was not being used in the `dirlookup` call in `create`,
so pass NULL instead and delete the unused

Removed unused `dirlookup` argument in `create`

The `off` argument to `dirlookup` is optional. It
was not being used in the `dirlookup` call in `create`,
so pass NULL instead and delete the unused local.

Signed-off-by: Dan Cross <cross@gajendra.net>

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Update name
Use generic 6.828 url (without year)

thanks tyfkda

thanks Wolfgang Keller

x

Allow holding to be called with interrupts enabled (for Mark Morrissey).

Delete a patch
Adjust typesetting of code

x

x

thanks mtasm

thanks wxdao

thanks eyalz800

vectors.pl is executable and asks shell for perl

thanks mataness

thanks tyfkda

x

Remove unused flags (thanks Wolfgang Keller)

x

x

Because sleeplocks replaced B_BUSY the holding test can
be more specific (thanks Mark Morrissey)

x