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fs/fs-writeback.c: restore lost comment

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I had to go back to a 2.6.20 tree to work out why we're adding a
number-of-inodes into a number-of-pages count.  Restore the lost comment.

Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andrew Morton 2010-10-26 14:22:05 -07:00 committed by Linus Torvalds
parent 16b56cf4b8
commit 74ce002d9a
1 changed files with 4 additions and 0 deletions
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4
fs/fs-writeback.c
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@ -721,6 +721,10 @@ static long wb_check_old_data_flush(struct bdi_writeback *wb)
return 0;
wb->last_old_flush = jiffies;
/*
* Add in the number of potentially dirty inodes, because each inode
* write can dirty pagecache in the underlying blockdev.
*/
nr_pages = global_page_state(NR_FILE_DIRTY) +
global_page_state(NR_UNSTABLE_NFS) +
(inodes_stat.nr_inodes - inodes_stat.nr_unused);