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authorJes Sorensen <jes@sgi.com>2006-01-09 15:59:24 -0800
committerIngo Molnar <mingo@hera.kernel.org>2006-01-09 15:59:24 -0800
commit1b1dcc1b57a49136f118a0f16367256ff9994a69 (patch)
treeb0b36d4f41d28c9d6514fb309d33c1a084d6309b /mm/shmem.c
parent794ee1baee1c26be40410233e6c20bceb2b03c08 (diff)
downloadop-kernel-dev-1b1dcc1b57a49136f118a0f16367256ff9994a69.zip
op-kernel-dev-1b1dcc1b57a49136f118a0f16367256ff9994a69.tar.gz
[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem
This patch converts the inode semaphore to a mutex. I have tested it on XFS and compiled as much as one can consider on an ia64. Anyway your luck with it might be different. Modified-by: Ingo Molnar <mingo@elte.hu> (finished the conversion) Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'mm/shmem.c')
-rw-r--r--mm/shmem.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/shmem.c b/mm/shmem.c
index a1f2f02..343b3c0 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1370,7 +1370,7 @@ shmem_file_write(struct file *file, const char __user *buf, size_t count, loff_t
if (!access_ok(VERIFY_READ, buf, count))
return -EFAULT;
- down(&inode->i_sem);
+ mutex_lock(&inode->i_mutex);
pos = *ppos;
written = 0;
@@ -1455,7 +1455,7 @@ shmem_file_write(struct file *file, const char __user *buf, size_t count, loff_t
if (written)
err = written;
out:
- up(&inode->i_sem);
+ mutex_unlock(&inode->i_mutex);
return err;
}
@@ -1491,7 +1491,7 @@ static void do_shmem_file_read(struct file *filp, loff_t *ppos, read_descriptor_
/*
* We must evaluate after, since reads (unlike writes)
- * are called without i_sem protection against truncate
+ * are called without i_mutex protection against truncate
*/
nr = PAGE_CACHE_SIZE;
i_size = i_size_read(inode);
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