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Revert "Introduce and use sleeplocks instead of BUSY flags"

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My changes have a race with re-used bufs and the code doesn't seem to get shorter
Keep the changes that fixed ip->off race

This reverts commit 3a5fa7ed90.

Conflicts:

	defs.h
	file.c
	file.h
This commit is contained in:
Frans Kaashoek 2011-08-29 17:18:40 -04:00
parent 22f7db5336
commit 1ddfbbb194
12 changed files with 61 additions and 105 deletions
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5
defs.h
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@ -5,7 +5,6 @@ struct inode;
struct pipe;
struct proc;
struct spinlock;
struct sleeplock;
struct stat;
struct superblock;
@ -130,10 +129,6 @@ void initlock(struct spinlock*, char*);
void release(struct spinlock*);
void pushcli(void);
void popcli(void);
void initsleeplock(struct sleeplock*);
void acquire_sleeplock(struct sleeplock*, struct spinlock*);
void release_sleeplock(struct sleeplock*);
int acquired_sleeplock(struct sleeplock*);
// string.c
int memcmp(const void*, const void*, uint);