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| author |   Namjae Jeon <namjae.jeon@samsung.com> | 2013-02-02 23:51:51 +0900 |
|---|---|---|
| committer |   Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-03-18 21:00:34 +0900 |
| commit | e0f56cb44b05abacb6aa8fa8695c28431e84b7a0 (patch) | |
| tree | 857e17dd8c9f52c9e9b82502313049a4df84fa56 /fs/f2fs | |
| parent | f2fs: check the level before calling get_nid function (diff) | |
| download | linux-dev-e0f56cb44b05abacb6aa8fa8695c28431e84b7a0.tar.xz linux-dev-e0f56cb44b05abacb6aa8fa8695c28431e84b7a0.zip | |
f2fs: optimize get node page readahead part
We can remove the call to find_get_page to get a page from the cache
and check for up-to-date, instead we can make use of grab_cache_page
part itself to fetch the page from the cache.
So, removing the call and moving the PageUptodate at proper place, also
taken care of moving the lock_page condition in the page_hit part.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/node.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index d408e69294c8..58f7216993c7 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -921,19 +921,17 @@ struct page *get_node_page_ra(struct page *parent, int start) if (!nid) return ERR_PTR(-ENOENT); - page = find_get_page(mapping, nid); - if (page && PageUptodate(page)) - goto page_hit; - f2fs_put_page(page, 0); - repeat: page = grab_cache_page(mapping, nid); if (!page) return ERR_PTR(-ENOMEM); + else if (PageUptodate(page)) + goto page_hit; err = read_node_page(page, READ_SYNC); + unlock_page(page); if (err) { - f2fs_put_page(page, 1); + f2fs_put_page(page, 0); return ERR_PTR(err); } @@ -947,8 +945,9 @@ repeat: ra_node_page(sbi, nid); } -page_hit: lock_page(page); + +page_hit: if (PageError(page)) { f2fs_put_page(page, 1); return ERR_PTR(-EIO); |