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authorJaegeuk Kim <jaegeuk.kim@samsung.com>2013-06-27 13:04:08 +0900
committerJaegeuk Kim <jaegeuk.kim@samsung.com>2013-07-02 08:48:16 +0900
commita1dd3c13ce65b726fddfe72b9d2f1009db983ce6 (patch)
tree19bb400f51389da870b4f3bcbfa05e7dd2d97f23 /fs/f2fs
parent5ebefc5b409a194a09da7ad1962b4bfce10a6859 (diff)
downloadop-kernel-dev-a1dd3c13ce65b726fddfe72b9d2f1009db983ce6.zip
op-kernel-dev-a1dd3c13ce65b726fddfe72b9d2f1009db983ce6.tar.gz
f2fs: fix to recover i_size from roll-forward
If user requests many data writes and fsync together, the last updated i_size should be stored to the inode block consistently. But, previous write_end just marks the inode as dirty and doesn't update its metadata into its inode block. After that, fsync just writes the inode block with newly updated data index excluding inode metadata updates. So, this patch introduces write_end in which updates inode block too when the i_size is changed. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/data.c23
1 files changed, 22 insertions, 1 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 6d4a743..e88f46f 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -701,6 +701,27 @@ err:
return err;
}
+static int f2fs_write_end(struct file *file,
+ struct address_space *mapping,
+ loff_t pos, unsigned len, unsigned copied,
+ struct page *page, void *fsdata)
+{
+ struct inode *inode = page->mapping->host;
+
+ SetPageUptodate(page);
+ set_page_dirty(page);
+
+ if (pos + copied > i_size_read(inode)) {
+ i_size_write(inode, pos + copied);
+ mark_inode_dirty(inode);
+ update_inode_page(inode);
+ }
+
+ unlock_page(page);
+ page_cache_release(page);
+ return copied;
+}
+
static ssize_t f2fs_direct_IO(int rw, struct kiocb *iocb,
const struct iovec *iov, loff_t offset, unsigned long nr_segs)
{
@@ -757,7 +778,7 @@ const struct address_space_operations f2fs_dblock_aops = {
.writepage = f2fs_write_data_page,
.writepages = f2fs_write_data_pages,
.write_begin = f2fs_write_begin,
- .write_end = nobh_write_end,
+ .write_end = f2fs_write_end,
.set_page_dirty = f2fs_set_data_page_dirty,
.invalidatepage = f2fs_invalidate_data_page,
.releasepage = f2fs_release_data_page,
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