diff options
| author | Mauricio Faria de Oliveira <mfo@canonical.com> | 2020-04-01 21:04:43 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-04-02 09:35:26 -0700 |
| commit | cc7b8f6245f0042a232c7f6807dc130d87233164 (patch) | |
| tree | b73e6126da277ff8e61b6f5acc4445c51f50a2e2 | |
| parent | 5c72feee3e45b40a3c96c7145ec422899d0e8964 (diff) | |
mm/page-writeback.c: write_cache_pages(): deduplicate identical checks
There used to be a 'retry' label in between the two (identical) checks
when first introduced in commit f446daaea9d4 ("mm: implement writeback
livelock avoidance using page tagging"), and later modified/updated in
commit 6e6938b6d313 ("writeback: introduce .tagged_writepages for the
WB_SYNC_NONE sync stage").
The label has been removed in commit 64081362e8ff ("mm/page-writeback.c:
fix range_cyclic writeback vs writepages deadlock"), and the (identical)
checks are now present / performed immediately one after another.
So, remove/deduplicate the latter check, moving tag_pages_for_writeback()
into the former check before the 'tag' variable assignment, so it's clear
that it's not used in this (similarly-named) function call but only later
in pagevec_lookup_range_tag().
Signed-off-by: Mauricio Faria de Oliveira <mfo@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Jan Kara <jack@suse.cz>
Link: http://lkml.kernel.org/r/20200218221716.1648-1-mfo@canonical.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/page-writeback.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 2caf780a42e7..ab5a3cee8ad3 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -2182,12 +2182,12 @@ int write_cache_pages(struct address_space *mapping, if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX) range_whole = 1; } - if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) + if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) { + tag_pages_for_writeback(mapping, index, end); tag = PAGECACHE_TAG_TOWRITE; - else + } else { tag = PAGECACHE_TAG_DIRTY; - if (wbc->sync_mode == WB_SYNC_ALL || wbc->tagged_writepages) - tag_pages_for_writeback(mapping, index, end); + } done_index = index; while (!done && (index <= end)) { int i; |