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vfs: kill pointless helpers in namespace.c

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mnt_{inc,dec}_count() is not cleaner than doing the corresponding
mnt_add_count() directly and mnt_set_count() is not used at all.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2011-11-23 19:04:52 -05:00
parent bad0dcffc2
commit aa9c0e07bb
1 changed files with 5 additions and 30 deletions
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35
fs/namespace.c
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@ -152,31 +152,6 @@ static inline void mnt_add_count(struct vfsmount *mnt, int n)
#endif
}
static inline void mnt_set_count(struct vfsmount *mnt, int n)
{
#ifdef CONFIG_SMP
this_cpu_write(mnt->mnt_pcp->mnt_count, n);
#else
mnt->mnt_count = n;
#endif
}
/*
* vfsmount lock must be held for read
*/
static inline void mnt_inc_count(struct vfsmount *mnt)
{
mnt_add_count(mnt, 1);
}
/*
* vfsmount lock must be held for read
*/
static inline void mnt_dec_count(struct vfsmount *mnt)
{
mnt_add_count(mnt, -1);
}
/*
* vfsmount lock must be held for write
*/
@ -780,20 +755,20 @@ static void mntput_no_expire(struct vfsmount *mnt)
#ifdef CONFIG_SMP
br_read_lock(vfsmount_lock);
if (likely(atomic_read(&mnt->mnt_longterm))) {
mnt_dec_count(mnt);
mnt_add_count(mnt, -1);
br_read_unlock(vfsmount_lock);
return;
}
br_read_unlock(vfsmount_lock);
br_write_lock(vfsmount_lock);
mnt_dec_count(mnt);
mnt_add_count(mnt, -1);
if (mnt_get_count(mnt)) {
br_write_unlock(vfsmount_lock);
return;
}
#else
mnt_dec_count(mnt);
mnt_add_count(mnt, -1);
if (likely(mnt_get_count(mnt)))
return;
br_write_lock(vfsmount_lock);
@ -823,7 +798,7 @@ EXPORT_SYMBOL(mntput);
struct vfsmount *mntget(struct vfsmount *mnt)
{
if (mnt)
mnt_inc_count(mnt);
mnt_add_count(mnt, 1);
return mnt;
}
EXPORT_SYMBOL(mntget);
@ -840,7 +815,7 @@ void mnt_unpin(struct vfsmount *mnt)
{
br_write_lock(vfsmount_lock);
if (mnt->mnt_pinned) {
mnt_inc_count(mnt);
mnt_add_count(mnt, 1);
mnt->mnt_pinned--;
}
br_write_unlock(vfsmount_lock);