The first page of volatile writes usually contains a sort of header information which will be used for recovery. (e.g., journal header of sqlite) If this is written without other journal data, user needs to handle the stale journal information. Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx> --- fs/f2fs/data.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index c29bcf4..e54489b 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1177,8 +1177,10 @@ write: goto redirty_out; if (f2fs_is_drop_cache(inode)) goto out; - if (f2fs_is_volatile_file(inode) && !wbc->for_reclaim && - available_free_memory(sbi, BASE_CHECK)) + /* we should not write 0'th page having journal header */ + if (f2fs_is_volatile_file(inode) && (!page->index || + (!wbc->for_reclaim && + available_free_memory(sbi, BASE_CHECK)))) goto redirty_out; /* Dentry blocks are controlled by checkpoint */ -- 2.6.3 -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
