f2fs: count the number of inmemory pages
This patch adds counting # of inmemory pages in the page cache.
Signed-off-by: Jaegeuk Kim <[email protected]>
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 3ebcf96..42607a6 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -201,6 +201,7 @@
}
get_page(page);
list_add_tail(&new->list, &fi->inmem_pages);
+ inc_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
mutex_unlock(&fi->inmem_lock);
}
@@ -216,6 +217,7 @@
f2fs_put_page(cur->page, 0);
list_del(&cur->list);
kmem_cache_free(inmem_entry_slab, cur);
+ dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
}
mutex_unlock(&fi->inmem_lock);
}
@@ -257,6 +259,7 @@
f2fs_put_page(cur->page, 1);
list_del(&cur->list);
kmem_cache_free(inmem_entry_slab, cur);
+ dec_page_count(F2FS_I_SB(inode), F2FS_INMEM_PAGES);
}
if (submit_bio)
f2fs_submit_merged_bio(sbi, DATA, WRITE);
