diff options
| author | Daniel Walker <dwalker@mvista.com> | 2008-02-04 22:31:26 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-05 09:44:31 -0800 |
| commit | 01ac835fdd121f36dded404af15225101f6ccee3 (patch) | |
| tree | 7c147e37003fdad5525ce4b036917a29d9cdd1a2 | |
| parent | 2278c5ac9d39699bac44250b9c532de0c02cb16a (diff) | |
uml: LDT mutex conversion
The ldt.semaphore conforms to the new struct mutex requirments, so I converted
it to use the new API and changed the name.
Signed-off-by: Daniel Walker <dwalker@mvista.com>
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | arch/um/sys-i386/ldt.c | 14 | ||||
| -rw-r--r-- | include/asm-um/ldt.h | 4 |
2 files changed, 9 insertions, 9 deletions
diff --git a/arch/um/sys-i386/ldt.c b/arch/um/sys-i386/ldt.c index 505ed5c9a68d..a34263e6b08d 100644 --- a/arch/um/sys-i386/ldt.c +++ b/arch/um/sys-i386/ldt.c @@ -147,7 +147,7 @@ static int read_ldt(void __user * ptr, unsigned long bytecount) if (ptrace_ldt) return read_ldt_from_host(ptr, bytecount); - down(&ldt->semaphore); + mutex_lock(&ldt->lock); if (ldt->entry_count <= LDT_DIRECT_ENTRIES) { size = LDT_ENTRY_SIZE*LDT_DIRECT_ENTRIES; if (size > bytecount) @@ -171,7 +171,7 @@ static int read_ldt(void __user * ptr, unsigned long bytecount) ptr += size; } } - up(&ldt->semaphore); + mutex_unlock(&ldt->lock); if (bytecount == 0 || err == -EFAULT) goto out; @@ -229,7 +229,7 @@ static int write_ldt(void __user * ptr, unsigned long bytecount, int func) } if (!ptrace_ldt) - down(&ldt->semaphore); + mutex_lock(&ldt->lock); err = write_ldt_entry(mm_idp, func, &ldt_info, &addr, 1); if (err) @@ -289,7 +289,7 @@ static int write_ldt(void __user * ptr, unsigned long bytecount, int func) err = 0; out_unlock: - up(&ldt->semaphore); + mutex_unlock(&ldt->lock); out: return err; } @@ -396,7 +396,7 @@ long init_new_ldt(struct mm_context *new_mm, struct mm_context *from_mm) if (!ptrace_ldt) - init_MUTEX(&new_mm->ldt.semaphore); + mutex_init(&new_mm->ldt.lock); if (!from_mm) { memset(&desc, 0, sizeof(desc)); @@ -456,7 +456,7 @@ long init_new_ldt(struct mm_context *new_mm, struct mm_context *from_mm) * i.e., we have to use the stub for modify_ldt, which * can't handle the big read buffer of up to 64kB. */ - down(&from_mm->ldt.semaphore); + mutex_lock(&from_mm->ldt.lock); if (from_mm->ldt.entry_count <= LDT_DIRECT_ENTRIES) memcpy(new_mm->ldt.u.entries, from_mm->ldt.u.entries, sizeof(new_mm->ldt.u.entries)); @@ -475,7 +475,7 @@ long init_new_ldt(struct mm_context *new_mm, struct mm_context *from_mm) } } new_mm->ldt.entry_count = from_mm->ldt.entry_count; - up(&from_mm->ldt.semaphore); + mutex_unlock(&from_mm->ldt.lock); } out: diff --git a/include/asm-um/ldt.h b/include/asm-um/ldt.h index b2553f3e87eb..52af512f5e7d 100644 --- a/include/asm-um/ldt.h +++ b/include/asm-um/ldt.h @@ -8,7 +8,7 @@ #ifndef __ASM_LDT_H #define __ASM_LDT_H -#include "asm/semaphore.h" +#include <linux/mutex.h> #include "asm/host_ldt.h" extern void ldt_host_info(void); @@ -27,7 +27,7 @@ struct ldt_entry { typedef struct uml_ldt { int entry_count; - struct semaphore semaphore; + struct mutex lock; union { struct ldt_entry * pages[LDT_PAGES_MAX]; struct ldt_entry entries[LDT_DIRECT_ENTRIES]; |