fs: rename vfsmount counter helpers

Suggested by Andreas, mnt_ prefix is clearer namespace, follows kernel
conventions better, and is easier for tab complete. I introduced these
names so I'll admit they were not good choices.

Signed-off-by: Nick Piggin <npiggin@kernel.dk>

diff --git a/fs/namespace.c b/fs/namespace.c
index 39a7d50..03b8235 100644 (file)
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -216,7 +216,7 @@ int __mnt_is_readonly(struct vfsmount *mnt)
 }
 EXPORT_SYMBOL_GPL(__mnt_is_readonly);
 
-static inline void inc_mnt_writers(struct vfsmount *mnt)
+static inline void mnt_inc_writers(struct vfsmount *mnt)
 {
 #ifdef CONFIG_SMP
        (*per_cpu_ptr(mnt->mnt_writers, smp_processor_id()))++;
@@ -225,7 +225,7 @@ static inline void inc_mnt_writers(struct vfsmount *mnt)
 #endif
 }
 
-static inline void dec_mnt_writers(struct vfsmount *mnt)
+static inline void mnt_dec_writers(struct vfsmount *mnt)
 {
 #ifdef CONFIG_SMP
        (*per_cpu_ptr(mnt->mnt_writers, smp_processor_id()))--;
@@ -234,7 +234,7 @@ static inline void dec_mnt_writers(struct vfsmount *mnt)
 #endif
 }
 
-static unsigned int count_mnt_writers(struct vfsmount *mnt)
+static unsigned int mnt_get_writers(struct vfsmount *mnt)
 {
 #ifdef CONFIG_SMP
        unsigned int count = 0;
@@ -273,9 +273,9 @@ int mnt_want_write(struct vfsmount *mnt)
        int ret = 0;
 
        preempt_disable();
-       inc_mnt_writers(mnt);
+       mnt_inc_writers(mnt);
        /*
-        * The store to inc_mnt_writers must be visible before we pass
+        * The store to mnt_inc_writers must be visible before we pass
         * MNT_WRITE_HOLD loop below, so that the slowpath can see our
         * incremented count after it has set MNT_WRITE_HOLD.
         */
@@ -289,7 +289,7 @@ int mnt_want_write(struct vfsmount *mnt)
         */
        smp_rmb();
        if (__mnt_is_readonly(mnt)) {
-               dec_mnt_writers(mnt);
+               mnt_dec_writers(mnt);
                ret = -EROFS;
                goto out;
        }
@@ -317,7 +317,7 @@ int mnt_clone_write(struct vfsmount *mnt)
        if (__mnt_is_readonly(mnt))
                return -EROFS;
        preempt_disable();
-       inc_mnt_writers(mnt);
+       mnt_inc_writers(mnt);
        preempt_enable();
        return 0;
 }
@@ -351,7 +351,7 @@ EXPORT_SYMBOL_GPL(mnt_want_write_file);
 void mnt_drop_write(struct vfsmount *mnt)
 {
        preempt_disable();
-       dec_mnt_writers(mnt);
+       mnt_dec_writers(mnt);
        preempt_enable();
 }
 EXPORT_SYMBOL_GPL(mnt_drop_write);
@@ -384,7 +384,7 @@ static int mnt_make_readonly(struct vfsmount *mnt)
         * MNT_WRITE_HOLD, so it can't be decremented by another CPU while
         * we're counting up here.
         */
-       if (count_mnt_writers(mnt) > 0)
+       if (mnt_get_writers(mnt) > 0)
                ret = -EBUSY;
        else
                mnt->mnt_flags |= MNT_READONLY;
@@ -663,9 +663,9 @@ static inline void __mntput(struct vfsmount *mnt)
         */
        /*
         * atomic_dec_and_lock() used to deal with ->mnt_count decrements
-        * provides barriers, so count_mnt_writers() below is safe.  AV
+        * provides barriers, so mnt_get_writers() below is safe.  AV
         */
-       WARN_ON(count_mnt_writers(mnt));
+       WARN_ON(mnt_get_writers(mnt));
        fsnotify_vfsmount_delete(mnt);
        dput(mnt->mnt_root);
        free_vfsmnt(mnt);