From d911d83ca1ff002f170f2c77975c1a6d705856a6 Mon Sep 17 00:00:00 2001
From: rsc <rsc>
Date: Fri, 8 Sep 2006 13:55:43 +0000
Subject: [PATCH] fix various comments
---
fs.c | 6 ------
fs.h | 4 ++--
proc.c | 2 +-
3 files changed, 3 insertions(+), 9 deletions(-)
diff --git a/fs.c b/fs.c
index f3d28c6..a1f0bf5 100644
--- a/fs.c
+++ b/fs.c
@@ -26,9 +26,6 @@
// so we don't use spin locks. Instead, if a process wants to use
// a particular inode, it must sleep(ip) to wait for it to be not busy.
// See iget below.
-//
-// XXX Inodes with dev == 0 exist only in memory. They have no on-disk
-// representation. This functionality is used to implement pipes.
struct inode inode[NINODE];
struct spinlock inode_table_lock;
@@ -362,7 +359,6 @@ iincref(struct inode *ip)
}
// Copy stat information from inode.
-// XXX Assumes inode is from disk file system.
void
stati(struct inode *ip, struct stat *st)
{
@@ -376,7 +372,6 @@ stati(struct inode *ip, struct stat *st)
#define min(a, b) ((a) < (b) ? (a) : (b))
// Read data from inode.
-// XXX Assumes inode is from disk file system.
int
readi(struct inode *ip, char *dst, uint off, uint n)
{
@@ -440,7 +435,6 @@ newblock(struct inode *ip, uint lbn)
}
// Write data to inode.
-// XXX Assumes inode is from disk file system.
int
writei(struct inode *ip, char *addr, uint off, uint n)
{
diff --git a/fs.h b/fs.h
index 8687d16..241322b 100644
--- a/fs.h
+++ b/fs.h
@@ -9,8 +9,8 @@
// File system super block
struct superblock {
- uint size; // Size of file system (bytes???) xxx
- uint nblocks; // Number of blocks
+ uint size; // Size of file system image (blocks)
+ uint nblocks; // Number of data blocks
uint ninodes; // Number of inodes.
};
diff --git a/proc.c b/proc.c
index e48f1ca..76549ae 100644
--- a/proc.c
+++ b/proc.c
@@ -38,7 +38,7 @@ setupsegs(struct proc *p)
}
c->gdt[0] = SEG_NULL;
- c->gdt[SEG_KCODE] = SEG(STA_X|STA_R, 0, 0x100000 + 64*1024, 0); // xxx
+ c->gdt[SEG_KCODE] = SEG(STA_X|STA_R, 0, 0x100000 + 64*1024, 0);
c->gdt[SEG_KDATA] = SEG(STA_W, 0, 0xffffffff, 0);
c->gdt[SEG_TSS] = SEG16(STS_T32A, (uint) &c->ts, sizeof(c->ts), 0);
c->gdt[SEG_TSS].s = 0;
--
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