Imbus/xv6-riscv-kernel
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a start at concurrent FS system calls

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This commit is contained in:
Robert Morris 2014-08-27 17:15:30 -04:00
parent 2c56547272
commit 71453f72f2
6 changed files with 95 additions and 61 deletions
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8
exec.c
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@ -18,9 +18,9 @@ exec(char *path, char **argv)
struct proghdr ph;
pde_t *pgdir, *oldpgdir;
begin_trans();
begin_op();
if((ip = namei(path)) == 0){
commit_trans();
end_op();
return -1;
}
ilock(ip);
@ -50,7 +50,7 @@ exec(char *path, char **argv)
goto bad;
}
iunlockput(ip);
commit_trans();
end_op();
ip = 0;
// Allocate two pages at the next page boundary.
@ -101,7 +101,7 @@ exec(char *path, char **argv)
freevm(pgdir);
if(ip){
iunlockput(ip);
commit_trans();
end_op();
}
return -1;
}