locks: add a dedicated spinlock to protect i_flctx lists
We can now add a dedicated spinlock without expanding struct inode.
Change to using that to protect the various i_flctx lists.
Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Acked-by: Christoph Hellwig <hch@lst.de>
diff --git a/fs/lockd/svcsubs.c b/fs/lockd/svcsubs.c
index 5300bb5..665ef5a 100644
--- a/fs/lockd/svcsubs.c
+++ b/fs/lockd/svcsubs.c
@@ -171,7 +171,7 @@
return 0;
again:
file->f_locks = 0;
- spin_lock(&inode->i_lock);
+ spin_lock(&flctx->flc_lock);
list_for_each_entry(fl, &flctx->flc_posix, fl_list) {
if (fl->fl_lmops != &nlmsvc_lock_operations)
continue;
@@ -183,7 +183,7 @@
if (match(lockhost, host)) {
struct file_lock lock = *fl;
- spin_unlock(&inode->i_lock);
+ spin_unlock(&flctx->flc_lock);
lock.fl_type = F_UNLCK;
lock.fl_start = 0;
lock.fl_end = OFFSET_MAX;
@@ -195,7 +195,7 @@
goto again;
}
}
- spin_unlock(&inode->i_lock);
+ spin_unlock(&flctx->flc_lock);
return 0;
}
@@ -232,14 +232,14 @@
return 1;
if (flctx && !list_empty_careful(&flctx->flc_posix)) {
- spin_lock(&inode->i_lock);
+ spin_lock(&flctx->flc_lock);
list_for_each_entry(fl, &flctx->flc_posix, fl_list) {
if (fl->fl_lmops == &nlmsvc_lock_operations) {
- spin_unlock(&inode->i_lock);
+ spin_unlock(&flctx->flc_lock);
return 1;
}
}
- spin_unlock(&inode->i_lock);
+ spin_unlock(&flctx->flc_lock);
}
file->f_locks = 0;
return 0;