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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 <mingo@elte.hu>

(finished the conversion)

Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Jes Sorensen
2006-01-09 15:59:24 -08:00
committed by Ingo Molnar
parent 794ee1baee
commit 1b1dcc1b57
113 changed files with 563 additions and 573 deletions
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24
fs/open.c
View File

@@ -211,9 +211,9 @@ int do_truncate(struct dentry *dentry, loff_t length, unsigned int time_attrs,
newattrs.ia_valid |= ATTR_FILE;
}
down(&dentry->d_inode->i_sem);
mutex_lock(&dentry->d_inode->i_mutex);
err = notify_change(dentry, &newattrs);
up(&dentry->d_inode->i_sem);
mutex_unlock(&dentry->d_inode->i_mutex);
return err;
}
@@ -398,9 +398,9 @@ asmlinkage long sys_utime(char __user * filename, struct utimbuf __user * times)
(error = vfs_permission(&nd, MAY_WRITE)) != 0)
goto dput_and_out;
}
down(&inode->i_sem);
mutex_lock(&inode->i_mutex);
error = notify_change(nd.dentry, &newattrs);
up(&inode->i_sem);
mutex_unlock(&inode->i_mutex);
dput_and_out:
path_release(&nd);
out:
@@ -451,9 +451,9 @@ long do_utimes(char __user * filename, struct timeval * times)
(error = vfs_permission(&nd, MAY_WRITE)) != 0)
goto dput_and_out;
}
down(&inode->i_sem);
mutex_lock(&inode->i_mutex);
error = notify_change(nd.dentry, &newattrs);
up(&inode->i_sem);
mutex_unlock(&inode->i_mutex);
dput_and_out:
path_release(&nd);
out:
@@ -620,13 +620,13 @@ asmlinkage long sys_fchmod(unsigned int fd, mode_t mode)
err = -EPERM;
if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
goto out_putf;
down(&inode->i_sem);
mutex_lock(&inode->i_mutex);
if (mode == (mode_t) -1)
mode = inode->i_mode;
newattrs.ia_mode = (mode & S_IALLUGO) | (inode->i_mode & ~S_IALLUGO);
newattrs.ia_valid = ATTR_MODE | ATTR_CTIME;
err = notify_change(dentry, &newattrs);
up(&inode->i_sem);
mutex_unlock(&inode->i_mutex);
out_putf:
fput(file);
@@ -654,13 +654,13 @@ asmlinkage long sys_chmod(const char __user * filename, mode_t mode)
if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
goto dput_and_out;
down(&inode->i_sem);
mutex_lock(&inode->i_mutex);
if (mode == (mode_t) -1)
mode = inode->i_mode;
newattrs.ia_mode = (mode & S_IALLUGO) | (inode->i_mode & ~S_IALLUGO);
newattrs.ia_valid = ATTR_MODE | ATTR_CTIME;
error = notify_change(nd.dentry, &newattrs);
up(&inode->i_sem);
mutex_unlock(&inode->i_mutex);
dput_and_out:
path_release(&nd);
@@ -696,9 +696,9 @@ static int chown_common(struct dentry * dentry, uid_t user, gid_t group)
}
if (!S_ISDIR(inode->i_mode))
newattrs.ia_valid |= ATTR_KILL_SUID|ATTR_KILL_SGID;
down(&inode->i_sem);
mutex_lock(&inode->i_mutex);
error = notify_change(dentry, &newattrs);
up(&inode->i_sem);
mutex_unlock(&inode->i_mutex);
out:
return error;
}