diff options
| author | Matthew Wilcox <willy@infradead.org> | 2017-11-22 11:41:23 -0500 |
|---|---|---|
| committer | Matthew Wilcox <willy@infradead.org> | 2018-10-21 10:46:36 -0400 |
| commit | ff9c745b81ff1e482167fd73558450e66ad43a33 (patch) | |
| tree | 2dd97fba1d7288a615e618b65872dfe032d488ce /include/linux/fs.h | |
| parent | 8fa8e538e4be359e9042573737632dda35a8700d (diff) | |
mm: Convert page-writeback to XArray
Includes moving mapping_tagged() to fs.h as a static inline, and
changing it to return bool.
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Diffstat (limited to 'include/linux/fs.h')
| -rw-r--r-- | include/linux/fs.h | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index d126cad0f621..e10278e4db66 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -483,15 +483,18 @@ struct block_device { struct mutex bd_fsfreeze_mutex; } __randomize_layout; +/* XArray tags, for tagging dirty and writeback pages in the pagecache. */ +#define PAGECACHE_TAG_DIRTY XA_MARK_0 +#define PAGECACHE_TAG_WRITEBACK XA_MARK_1 +#define PAGECACHE_TAG_TOWRITE XA_MARK_2 + /* - * Radix-tree tags, for tagging dirty and writeback pages within the pagecache - * radix trees + * Returns true if any of the pages in the mapping are marked with the tag. */ -#define PAGECACHE_TAG_DIRTY 0 -#define PAGECACHE_TAG_WRITEBACK 1 -#define PAGECACHE_TAG_TOWRITE 2 - -int mapping_tagged(struct address_space *mapping, int tag); +static inline bool mapping_tagged(struct address_space *mapping, xa_mark_t tag) +{ + return xa_marked(&mapping->i_pages, tag); +} static inline void i_mmap_lock_write(struct address_space *mapping) { |