diff options
author | Pavel Emelianov <xemul@sw.ru> | 2007-05-08 00:30:19 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-08 11:15:11 -0700 |
commit | b5e618181a927210f8be1d3d2249d31904ba358d (patch) | |
tree | 731f1ae4ff1ba56d402bb329182b7d935bb439a1 /fs | |
parent | db9c02fa8bd50eb104781a9f78cae923d8da1e74 (diff) | |
download | linux-b5e618181a927210f8be1d3d2249d31904ba358d.tar.bz2 |
Introduce a handy list_first_entry macro
There are many places in the kernel where the construction like
foo = list_entry(head->next, struct foo_struct, list);
are used.
The code might look more descriptive and neat if using the macro
list_first_entry(head, type, member) \
list_entry((head)->next, type, member)
Here is the macro itself and the examples of its usage in the generic code.
If it will turn out to be useful, I can prepare the set of patches to
inject in into arch-specific code, drivers, networking, etc.
Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Signed-off-by: Kirill Korotaev <dev@openvz.org>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Zach Brown <zach.brown@oracle.com>
Cc: Davide Libenzi <davidel@xmailserver.org>
Cc: John McCutchan <ttb@tentacle.dhs.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
-rw-r--r-- | fs/dquot.c | 2 | ||||
-rw-r--r-- | fs/eventpoll.c | 6 | ||||
-rw-r--r-- | fs/inode.c | 2 | ||||
-rw-r--r-- | fs/inotify.c | 2 | ||||
-rw-r--r-- | fs/namespace.c | 4 | ||||
-rw-r--r-- | fs/pnode.c | 2 |
6 files changed, 9 insertions, 9 deletions
diff --git a/fs/dquot.c b/fs/dquot.c index dcc5a582e1f1..3a995841de90 100644 --- a/fs/dquot.c +++ b/fs/dquot.c @@ -474,7 +474,7 @@ int vfs_quota_sync(struct super_block *sb, int type) spin_lock(&dq_list_lock); dirty = &dqopt->info[cnt].dqi_dirty_list; while (!list_empty(dirty)) { - dquot = list_entry(dirty->next, struct dquot, dq_dirty); + dquot = list_first_entry(dirty, struct dquot, dq_dirty); /* Dirty and inactive can be only bad dquot... */ if (!test_bit(DQ_ACTIVE_B, &dquot->dq_flags)) { clear_dquot_dirty(dquot); diff --git a/fs/eventpoll.c b/fs/eventpoll.c index d0b86060cc19..b5c7ca584939 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -453,7 +453,7 @@ void eventpoll_release_file(struct file *file) mutex_lock(&epmutex); while (!list_empty(lsthead)) { - epi = list_entry(lsthead->next, struct epitem, fllink); + epi = list_first_entry(lsthead, struct epitem, fllink); ep = epi->ep; list_del_init(&epi->fllink); @@ -1143,7 +1143,7 @@ static void ep_unregister_pollwait(struct eventpoll *ep, struct epitem *epi) if (nwait) { while (!list_empty(lsthead)) { - pwq = list_entry(lsthead->next, struct eppoll_entry, llink); + pwq = list_first_entry(lsthead, struct eppoll_entry, llink); list_del_init(&pwq->llink); remove_wait_queue(pwq->whead, &pwq->wait); @@ -1359,7 +1359,7 @@ static int ep_send_events(struct eventpoll *ep, struct list_head *txlist, * read. */ for (eventcnt = 0; !list_empty(txlist) && eventcnt < maxevents;) { - epi = list_entry(txlist->next, struct epitem, rdllink); + epi = list_first_entry(txlist, struct epitem, rdllink); prefetch(epi->rdllink.next); /* diff --git a/fs/inode.c b/fs/inode.c index 81508b0a3a70..410f235c337b 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -275,7 +275,7 @@ static void dispose_list(struct list_head *head) while (!list_empty(head)) { struct inode *inode; - inode = list_entry(head->next, struct inode, i_list); + inode = list_first_entry(head, struct inode, i_list); list_del(&inode->i_list); if (inode->i_data.nrpages) diff --git a/fs/inotify.c b/fs/inotify.c index f5099d86fd91..7457501b9565 100644 --- a/fs/inotify.c +++ b/fs/inotify.c @@ -509,7 +509,7 @@ void inotify_destroy(struct inotify_handle *ih) mutex_unlock(&ih->mutex); break; } - watch = list_entry(watches->next, struct inotify_watch, h_list); + watch = list_first_entry(watches, struct inotify_watch, h_list); get_inotify_watch(watch); mutex_unlock(&ih->mutex); diff --git a/fs/namespace.c b/fs/namespace.c index c5b88100d914..72bb1062bfe7 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -499,7 +499,7 @@ void release_mounts(struct list_head *head) { struct vfsmount *mnt; while (!list_empty(head)) { - mnt = list_entry(head->next, struct vfsmount, mnt_hash); + mnt = list_first_entry(head, struct vfsmount, mnt_hash); list_del_init(&mnt->mnt_hash); if (mnt->mnt_parent != mnt) { struct dentry *dentry; @@ -1177,7 +1177,7 @@ static void expire_mount_list(struct list_head *graveyard, struct list_head *mou while (!list_empty(graveyard)) { LIST_HEAD(umounts); - mnt = list_entry(graveyard->next, struct vfsmount, mnt_expire); + mnt = list_first_entry(graveyard, struct vfsmount, mnt_expire); list_del_init(&mnt->mnt_expire); /* don't do anything if the namespace is dead - all the diff --git a/fs/pnode.c b/fs/pnode.c index 56aacead8362..89940f243fc2 100644 --- a/fs/pnode.c +++ b/fs/pnode.c @@ -59,7 +59,7 @@ static int do_make_slave(struct vfsmount *mnt) } else { struct list_head *p = &mnt->mnt_slave_list; while (!list_empty(p)) { - slave_mnt = list_entry(p->next, + slave_mnt = list_first_entry(p, struct vfsmount, mnt_slave); list_del_init(&slave_mnt->mnt_slave); slave_mnt->mnt_master = NULL; |