• Jaegeuk Kim's avatar
    f2fs: fix handling errors got by f2fs_write_inode · 398b1ac5
    Jaegeuk Kim authored
    Ruslan reported that f2fs hangs with an infinite loop in f2fs_sync_file():
    
    	while (sync_node_pages(sbi, inode->i_ino, &wbc) == 0)
    		f2fs_write_inode(inode, NULL);
    
    The reason was revealed that the cold flag is not set even thought this inode is
    a normal file. Therefore, sync_node_pages() skips to write node blocks since it
    only writes cold node blocks.
    
    The cold flag is stored to the node_footer in node block, and whenever a new
    node page is allocated, it is set according to its file type, file or directory.
    
    But, after sudden-power-off, when recovering the inode page, f2fs doesn't recover
    its cold flag.
    
    So, let's assign the cold flag in more right places.
    
    One more thing:
    If f2fs_write_inode() returns an error due to whatever situations, there would
    be no dirty node pages so that sync_node_pages() returns zero.
    (i.e., zero means nothing was written.)
    Reported-by: default avatarRuslan N. Marchenko <me@ruff.mobi>
    Signed-off-by: default avatarJaegeuk Kim <jaegeuk.kim@samsung.com>
    398b1ac5
dir.c 16.5 KB