aboutsummaryrefslogtreecommitdiffstats
path: root/mm
diff options
context:
space:
mode:
authorJens Axboe <jens.axboe@oracle.com>2009-09-23 19:37:09 +0200
committerJens Axboe <jens.axboe@oracle.com>2009-09-25 18:08:25 +0200
commit5b0830cb9085f4b69f9d57d7f3aaff322ffbec26 (patch)
tree10040eb359269d4cd05487790b758144a69e8e39 /mm
parentwriteback: improve readability of the wb_writeback() continue/break logic (diff)
downloadlinux-dev-5b0830cb9085f4b69f9d57d7f3aaff322ffbec26.tar.xz
linux-dev-5b0830cb9085f4b69f9d57d7f3aaff322ffbec26.zip
writeback: get rid to incorrect references to pdflush in comments
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'mm')
-rw-r--r--mm/page-writeback.c8
-rw-r--r--mm/shmem.c5
-rw-r--r--mm/vmscan.c8
3 files changed, 11 insertions, 10 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 3c78fc316202..8bef063125b1 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -58,7 +58,7 @@ static inline long sync_writeback_pages(unsigned long dirtied)
/* The following parameters are exported via /proc/sys/vm */
/*
- * Start background writeback (via pdflush) at this percentage
+ * Start background writeback (via writeback threads) at this percentage
*/
int dirty_background_ratio = 10;
@@ -477,8 +477,8 @@ get_dirty_limits(unsigned long *pbackground, unsigned long *pdirty,
* balance_dirty_pages() must be called by processes which are generating dirty
* data. It looks at the number of dirty pages in the machine and will force
* the caller to perform writeback if the system is over `vm_dirty_ratio'.
- * If we're over `background_thresh' then pdflush is woken to perform some
- * writeout.
+ * If we're over `background_thresh' then the writeback threads are woken to
+ * perform some writeout.
*/
static void balance_dirty_pages(struct address_space *mapping,
unsigned long write_chunk)
@@ -582,7 +582,7 @@ static void balance_dirty_pages(struct address_space *mapping,
bdi->dirty_exceeded = 0;
if (writeback_in_progress(bdi))
- return; /* pdflush is already working this queue */
+ return;
/*
* In laptop mode, we wait until hitting the higher threshold before
diff --git a/mm/shmem.c b/mm/shmem.c
index b206a7a32e2a..aa9481166aae 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1046,8 +1046,9 @@ static int shmem_writepage(struct page *page, struct writeback_control *wbc)
* sync from ever calling shmem_writepage; but a stacking filesystem
* may use the ->writepage of its underlying filesystem, in which case
* tmpfs should write out to swap only in response to memory pressure,
- * and not for pdflush or sync. However, in those cases, we do still
- * want to check if there's a redundant swappage to be discarded.
+ * and not for the writeback threads or sync. However, in those cases,
+ * we do still want to check if there's a redundant swappage to be
+ * discarded.
*/
if (wbc->for_reclaim)
swap = get_swap_page();
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 613e89f471d9..359c3c57ef85 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1709,10 +1709,10 @@ static void shrink_zones(int priority, struct zonelist *zonelist,
*
* If the caller is !__GFP_FS then the probability of a failure is reasonably
* high - the zone may be full of dirty or under-writeback pages, which this
- * caller can't do much about. We kick pdflush and take explicit naps in the
- * hope that some of these pages can be written. But if the allocating task
- * holds filesystem locks which prevent writeout this might not work, and the
- * allocation attempt will fail.
+ * caller can't do much about. We kick the writeback threads and take explicit
+ * naps in the hope that some of these pages can be written. But if the
+ * allocating task holds filesystem locks which prevent writeout this might not
+ * work, and the allocation attempt will fail.
*
* returns: 0, if no pages reclaimed
* else, the number of pages reclaimed