diff options
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index c30ed84a5f7f..650fd6d7a802 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -18,6 +18,7 @@ #include <linux/stat.h> #include <linux/cache.h> #include <linux/radix-tree.h> +#include <linux/prio_tree.h> #include <linux/kobject.h> #include <asm/atomic.h> #include <linux/audit.h> @@ -329,9 +330,9 @@ struct address_space { unsigned long nrpages; /* number of total pages */ pgoff_t writeback_index;/* writeback starts here */ struct address_space_operations *a_ops; /* methods */ - struct list_head i_mmap; /* list of private mappings */ - struct list_head i_mmap_shared; /* list of shared mappings */ - spinlock_t i_mmap_lock; /* protect both above lists */ + struct prio_tree_root i_mmap; /* tree of private mappings */ + struct prio_tree_root i_mmap_shared; /* tree of shared mappings */ + spinlock_t i_mmap_lock; /* protect trees & list above */ atomic_t truncate_count; /* Cover race condition with truncate */ unsigned long flags; /* error bits/gfp mask */ struct backing_dev_info *backing_dev_info; /* device readahead, etc */ @@ -380,8 +381,8 @@ int mapping_tagged(struct address_space *mapping, int tag); */ static inline int mapping_mapped(struct address_space *mapping) { - return !list_empty(&mapping->i_mmap) || - !list_empty(&mapping->i_mmap_shared); + return !prio_tree_empty(&mapping->i_mmap) || + !prio_tree_empty(&mapping->i_mmap_shared); } /* @@ -392,7 +393,7 @@ static inline int mapping_mapped(struct address_space *mapping) */ static inline int mapping_writably_mapped(struct address_space *mapping) { - return !list_empty(&mapping->i_mmap_shared); + return !prio_tree_empty(&mapping->i_mmap_shared); } /* |