Fix a few lines that runoff is complaining about that they are too long

Remove trailing white space with:
for f in *.{h,c}; do sed -i .sed 's/[[:blank:]]*$//' $f; done
(Thanks to Nicolás Wolovick)

Pick up where i left off in april:
- move log into metadata part of disk, so that marking
that the log's blocks are in use falls out for free
- superblock describes the whole disk (sizes and offets)

Pick up where i left off in april:
- move log into metadata part of disk, so that marking
that the log's blocks are in use falls out for free
- superblock describes the whole disk (sizes and offets)
- sizes and offsets are computed in one place (mkfs) and
the rest of the code refers to the superblock for these values,
instead of recomputing them.

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One ide command for nsector_per_block generates nsector_per_block interrupts,
instead of 1. ideintr() should wait for nsector_per_block interrupts before
waking up the reader; now it wakes up the r

One ide command for nsector_per_block generates nsector_per_block interrupts,
instead of 1. ideintr() should wait for nsector_per_block interrupts before
waking up the reader; now it wakes up the reader after 1 interrupt, which
apparently means that the first sector is available of the command instead of all.
For now keep BSIZE to 512.

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Disentangle block size from the disk's sector size. Set block size to 1024 to show
that they can be different. Clean up mkfs, simplifying specifying fs parameters,
remove some redundancy between fs

Disentangle block size from the disk's sector size. Set block size to 1024 to show
that they can be different. Clean up mkfs, simplifying specifying fs parameters,
remove some redundancy between fs and mkfs, and fix disk layout bugs. Call blocks
in the file system blocks instead of sectors. Passes usertests for different
block sizes.

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clarify some FS comments

Fit fs.h in one column

Dirt simple logging
Passes usertests and stressfs
Seems to recover correctly in a number of simple cases

xv6: formatting, cleanup, rev5 (take 2)

drop NADDRS and INDIRECT; too many names

move T_DIR etc into stat.h; move type up

be clear what the root i-number is

comment nits

shuffle fs.c in bottom-up order

tweak fs.h spacing; add comment

fix various comments

more comments

inode addrs[NDIRECT] -> NADDRS
fix race in mknod / creat
use last component in dirent in mknod, not path

user-level malloc (untested)
nit in sbrk
indirect block
fix dup to share fd struct

commented out code for cwd

low-level keyboard input (not hooked up to /dev yet)
fix acquire() to cli() *before* incrementing nlock
make T_SYSCALL a trap gate, not an interrupt gate
sadly, various crashes if you hold down a key

low-level keyboard input (not hooked up to /dev yet)
fix acquire() to cli() *before* incrementing nlock
make T_SYSCALL a trap gate, not an interrupt gate
sadly, various crashes if you hold down a keyboard key...

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iread for T_DEV
O_RDWR, etc.
create file

block bitmap
balloc

mknod,ialloc,iupdate

namei