When quiet_error applies rate limiting to buffer_io_error calls, what the they apply to is unclear because the name is so generic, particularly if the messages are interleaved with others:
[ 1936.063572] quiet_error: 664293 callbacks suppressed [ 1936.065297] Buffer I/O error on dev sdr, logical block 257429952, lost async page write [ 1936.067814] Buffer I/O error on dev sdr, logical block 257429953, lost async page write Also, the function uses printk_ratelimit(), although printk.h includes a comment advising "Please don't use... Instead use printk_ratelimited()." Change buffer_io_error to check the BH_Quiet bit itself, drop the printk_ratelimit call, and print using printk_ratelimited. This makes the messages look like: [ 387.208839] buffer_io_error: 676394 callbacks suppressed [ 387.210693] Buffer I/O error on dev sdr, logical block 211291776, lost async page write [ 387.213432] Buffer I/O error on dev sdr, logical block 211291777, lost async page write Signed-off-by: Robert Elliott <[email protected]> Reviewed-by: Webb Scales <[email protected]> --- fs/buffer.c | 23 +++++++---------------- 1 files changed, 7 insertions(+), 16 deletions(-) diff --git a/fs/buffer.c b/fs/buffer.c index c6cb0ee..3710a68 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -128,19 +128,13 @@ __clear_page_buffers(struct page *page) page_cache_release(page); } - -static int quiet_error(struct buffer_head *bh) -{ - if (!test_bit(BH_Quiet, &bh->b_state) && printk_ratelimit()) - return 0; - return 1; -} - - static void buffer_io_error(struct buffer_head *bh, char *msg) { char b[BDEVNAME_SIZE]; - printk(KERN_ERR "Buffer I/O error on dev %s, logical block %llu%s\n", + + if (!test_bit(BH_Quiet, &bh->b_state)) + printk_ratelimited(KERN_ERR + "Buffer I/O error on dev %s, logical block %llu%s\n", bdevname(bh->b_bdev, b), (unsigned long long)bh->b_blocknr, msg); } @@ -180,8 +174,7 @@ void end_buffer_write_sync(struct buffer_head *bh, int uptodate) if (uptodate) { set_buffer_uptodate(bh); } else { - if (!quiet_error(bh)) - buffer_io_error(bh, ", lost sync page write"); + buffer_io_error(bh, ", lost sync page write"); set_buffer_write_io_error(bh); clear_buffer_uptodate(bh); } @@ -298,8 +291,7 @@ static void end_buffer_async_read(struct buffer_head *bh, int uptodate) set_buffer_uptodate(bh); } else { clear_buffer_uptodate(bh); - if (!quiet_error(bh)) - buffer_io_error(bh, ", async page read"); + buffer_io_error(bh, ", async page read"); SetPageError(page); } @@ -358,8 +350,7 @@ void end_buffer_async_write(struct buffer_head *bh, int uptodate) if (uptodate) { set_buffer_uptodate(bh); } else { - if (!quiet_error(bh)) - buffer_io_error(bh, ", lost async page write"); + buffer_io_error(bh, ", lost async page write"); set_bit(AS_EIO, &page->mapping->flags); set_buffer_write_io_error(bh); clear_buffer_uptodate(bh); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
