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| author | Andrew Morton <akpm@linux-foundation.org> | 2010-10-26 14:22:05 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-26 16:52:10 -0700 |
| commit | 74ce002d9aee23031b4967e1dd1c1966ddc60749 (patch) | |
| tree | 797e998b3c8661d8e6884de4228928d6cda74047 | |
| parent | 16b56cf4b8a0fa9acc21bd2ad19839b917999b96 (diff) | |
| download | lwn-74ce002d9aee23031b4967e1dd1c1966ddc60749.tar.gz lwn-74ce002d9aee23031b4967e1dd1c1966ddc60749.zip | |
fs/fs-writeback.c: restore lost comment
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>
| -rw-r--r-- | fs/fs-writeback.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 97d2951bd4d1..b5aae4bd0aca 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -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); |