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f2fs: count the number of inmemory pages

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This patch adds counting # of inmemory pages in the page cache.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim
2014-12-05 17:18:15 -08:00
parent 126622343a
commit 8dcf2ff721
3 changed files with 8 additions and 1 deletions
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fs/f2fs/segment.c
+3
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@@ -201,6 +201,7 @@ retry:
}
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 @@ void invalidate_inmem_page(struct inode *inode, struct page *page)
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 @@ void commit_inmem_pages(struct inode *inode, bool abort)
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);