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authorAl Viro <viro@zeniv.linux.org.uk>2010-06-03 01:38:30 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2010-08-10 00:47:44 +0400
commita4ffdde6e56fdf8c34ddadc2674d6eb978083369 (patch)
tree0fa07df92d804cb7d0482135195e4835cb16403a /fs/notify
parentb5fc510c48f631882ccec3c0f02a25d5b67de09f (diff)
downloadlinux-a4ffdde6e56fdf8c34ddadc2674d6eb978083369.tar.xz
simplify checks for I_CLEAR/I_FREEING
add I_CLEAR instead of replacing I_FREEING with it. I_CLEAR is equivalent to I_FREEING for almost all code looking at either; it's there to keep track of having called clear_inode() exactly once per inode lifetime, at some point after having set I_FREEING. I_CLEAR and I_FREEING never get set at the same time with the current code, so we can switch to setting i_flags to I_FREEING | I_CLEAR instead of I_CLEAR without loss of information. As the result of such change, checks become simpler and the amount of code that needs to know about I_CLEAR shrinks a lot. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/notify')
-rw-r--r--fs/notify/inode_mark.c6
-rw-r--r--fs/notify/inotify/inotify.c7
2 files changed, 6 insertions, 7 deletions
diff --git a/fs/notify/inode_mark.c b/fs/notify/inode_mark.c
index 0399bcbe09c8..152b83ec005d 100644
--- a/fs/notify/inode_mark.c
+++ b/fs/notify/inode_mark.c
@@ -369,11 +369,11 @@ void fsnotify_unmount_inodes(struct list_head *list)
struct inode *need_iput_tmp;
/*
- * We cannot __iget() an inode in state I_CLEAR, I_FREEING,
+ * We cannot __iget() an inode in state I_FREEING,
* I_WILL_FREE, or I_NEW which is fine because by that point
* the inode cannot have any associated watches.
*/
- if (inode->i_state & (I_CLEAR|I_FREEING|I_WILL_FREE|I_NEW))
+ if (inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW))
continue;
/*
@@ -397,7 +397,7 @@ void fsnotify_unmount_inodes(struct list_head *list)
/* In case the dropping of a reference would nuke next_i. */
if ((&next_i->i_sb_list != list) &&
atomic_read(&next_i->i_count) &&
- !(next_i->i_state & (I_CLEAR | I_FREEING | I_WILL_FREE))) {
+ !(next_i->i_state & (I_FREEING | I_WILL_FREE))) {
__iget(next_i);
need_iput = next_i;
}
diff --git a/fs/notify/inotify/inotify.c b/fs/notify/inotify/inotify.c
index 27b75ebc7460..cf6b0429a257 100644
--- a/fs/notify/inotify/inotify.c
+++ b/fs/notify/inotify/inotify.c
@@ -377,11 +377,11 @@ void inotify_unmount_inodes(struct list_head *list)
struct list_head *watches;
/*
- * We cannot __iget() an inode in state I_CLEAR, I_FREEING,
+ * We cannot __iget() an inode in state I_FREEING,
* I_WILL_FREE, or I_NEW which is fine because by that point
* the inode cannot have any associated watches.
*/
- if (inode->i_state & (I_CLEAR|I_FREEING|I_WILL_FREE|I_NEW))
+ if (inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW))
continue;
/*
@@ -403,8 +403,7 @@ void inotify_unmount_inodes(struct list_head *list)
/* In case the dropping of a reference would nuke next_i. */
if ((&next_i->i_sb_list != list) &&
atomic_read(&next_i->i_count) &&
- !(next_i->i_state & (I_CLEAR | I_FREEING |
- I_WILL_FREE))) {
+ !(next_i->i_state & (I_FREEING|I_WILL_FREE))) {
__iget(next_i);
need_iput = next_i;
}