Commit a28a9178 authored Dec 25, 2012 by Eric Sandeen Committed by Theodore Ts'o Dec 25, 2012

ext4: remove unaligned AIO warning printk



Although I put this in, I now think it was a bad decision.  For most
users, there is very little to be done in this case.  They get the
message, once per day, with no real context or proposed action.  TBH,
it generates support calls when it probably does not need to; the
message sounds more dire than the situation really is.

Just nuke it.  Normal investigation via blktrace or whatnot can
reveal poor IO patterns if bad performance is encountered.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

parent ad96f711

fs/ext4/file.c

+0 −8

Original line number	Diff line number	Diff line
		@@ -108,14 +108,6 @@ ext4_file_dio_write(struct kiocb iocb, const struct iovec iov,

		/* Unaligned direct AIO must be serialized; see comment above */
		if (unaligned_aio) {
		static unsigned long unaligned_warn_time;

		/* Warn about this once per day */
		if (printk_timed_ratelimit(&unaligned_warn_time, 606024*HZ))
		ext4_msg(inode->i_sb, KERN_WARNING,
		"Unaligned AIO/DIO on inode %ld by %s; "
		"performance will be poor.",
		inode->i_ino, current->comm);
		mutex_lock(ext4_aio_mutex(inode));
		ext4_unwritten_wait(inode);
		}

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