Pipe has no data associated with fs so it is not good idea to block pipe_write() if FS is frozen, but we can not update file's time on such filesystem. Let's use same idea as we use in touch_atime(). https://bugzilla.kernel.org/show_bug.cgi?id=65701 Signed-off-by: Dmitry Monakhov <dmonakhov@xxxxxxxxxx> Reviewed-by: Jan Kara <jack@xxxxxxx> --- fs/pipe.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/fs/pipe.c b/fs/pipe.c index d2c45e1..a9acd9a 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -663,10 +663,11 @@ out: wake_up_interruptible_sync_poll(&pipe->wait, POLLIN | POLLRDNORM); kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN); } - if (ret > 0) { + if (ret > 0 && sb_start_write_trylock(file_inode(filp)->i_sb)) { int err = file_update_time(filp); if (err) ret = err; + sb_end_write(file_inode(filp)->i_sb); } return ret; } -- 1.7.1 -- 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
