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| author | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-10-31 14:57:01 +0900 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-10-31 16:01:03 +0900 |
| commit | cfe58f9dcd9afe181894e2257e3f8aa3fee840c5 (patch) | |
| tree | 1acd83b88bb0cb1aed28ffe3ae6091f69bd0f091 /fs | |
| parent | 44c60bf2b9f2808e127fa4cd3b11b50a46cf5817 (diff) | |
| download | linux-cfe58f9dcd9afe181894e2257e3f8aa3fee840c5.tar.bz2 | |
f2fs: avoid to wait all the node blocks during fsync
Previously, f2fs_sync_file() waits for all the node blocks to be written.
But, we don't need to do that, but wait only the inode-related node blocks.
This patch adds wait_on_node_pages_writeback() in which waits inode-related
node blocks that are on writeback.
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/f2fs/f2fs.h | 1 | ||||
| -rw-r--r-- | fs/f2fs/file.c | 5 | ||||
| -rw-r--r-- | fs/f2fs/node.c | 40 |
3 files changed, 44 insertions, 2 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 6aaefdbaaac0..625eb4befad4 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -1026,6 +1026,7 @@ void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); int truncate_inode_blocks(struct inode *, pgoff_t); int truncate_xattr_node(struct inode *, struct page *); +int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t); int remove_inode_page(struct inode *); struct page *new_inode_page(struct inode *, const struct qstr *); struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 58ed19aaa4c6..7d714f4972d5 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -189,8 +189,9 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) if (ret) goto out; } - filemap_fdatawait_range(sbi->node_inode->i_mapping, - 0, LONG_MAX); + ret = wait_on_node_pages_writeback(sbi, inode->i_ino); + if (ret) + goto out; ret = blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL); } out: diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index 8e331d5b9fcd..b527ed4c0225 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -1148,6 +1148,46 @@ continue_unlock: return nwritten; } +int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) +{ + struct address_space *mapping = sbi->node_inode->i_mapping; + pgoff_t index = 0, end = LONG_MAX; + struct pagevec pvec; + int nr_pages; + int ret2 = 0, ret = 0; + + pagevec_init(&pvec, 0); + while ((index <= end) && + (nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, + PAGECACHE_TAG_WRITEBACK, + min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1)) != 0) { + unsigned i; + + for (i = 0; i < nr_pages; i++) { + struct page *page = pvec.pages[i]; + + /* until radix tree lookup accepts end_index */ + if (page->index > end) + continue; + + if (ino && ino_of_node(page) == ino) + wait_on_page_writeback(page); + if (TestClearPageError(page)) + ret = -EIO; + } + pagevec_release(&pvec); + cond_resched(); + } + + if (test_and_clear_bit(AS_ENOSPC, &mapping->flags)) + ret2 = -ENOSPC; + if (test_and_clear_bit(AS_EIO, &mapping->flags)) + ret2 = -EIO; + if (!ret) + ret = ret2; + return ret; +} + static int f2fs_write_node_page(struct page *page, struct writeback_control *wbc) { |