Al Viro <v...@zeniv.linux.org.uk> wrote: > fs/cachefiles/rdwr.c:967: ret = file->f_op->write( > > cachefiles_write_page(); no fucking idea what locks might be held by caller > and potentially that's a rather nasty source of PITA
The caller of cachefiles_write_page() (ie. fscache_write_op()) holds no locks over the call. __fscache_write_page() queues the pages for writing to the cache from the netfs's read-side routines and returns immediately. fscache_write_op() then picks them up in the background and passes them over to the backend (eg. cachefiles_write_page()) which writes them out to the cache. So I think it should be safe to call file_start/end_write() or whatever around the file->f_op->write() calls. David -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
