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[PATCH] mutex subsystem, semaphore to mutex: VFS, ->i_sem

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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 <[email protected]>

(finished the conversion)

Signed-off-by: Jes Sorensen <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Jes Sorensen 2006-01-09 15:59:24 -08:00 • committed by Ingo Molnar
commit 1b1dcc1b57
113 changed files with 563 additions and 573 deletions
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6
mm/shmem.c
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@ -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);