diff options
| author | Joonsoo Kim <iamjoonsoo.kim@lge.com> | 2016-05-20 02:10:49 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-20 04:12:14 +0200 |
| commit | 0139aa7b7fa12ceef095d99dc36606a5b10ab83a (patch) | |
| tree | 94da74f2f79911a11a3c7c34f73ba971dec41a7e /drivers/block/aoe | |
| parent | mm/page_ref: use page_ref helper instead of direct modification of _count (diff) | |
| download | linux-0139aa7b7fa12ceef095d99dc36606a5b10ab83a.tar.xz linux-0139aa7b7fa12ceef095d99dc36606a5b10ab83a.zip | |
mm: rename _count, field of the struct page, to _refcount
Many developers already know that field for reference count of the
struct page is _count and atomic type. They would try to handle it
directly and this could break the purpose of page reference count
tracepoint. To prevent direct _count modification, this patch rename it
to _refcount and add warning message on the code. After that, developer
who need to handle reference count will find that field should not be
accessed directly.
[akpm@linux-foundation.org: fix comments, per Vlastimil]
[akpm@linux-foundation.org: Documentation/vm/transhuge.txt too]
[sfr@canb.auug.org.au: sync ethernet driver changes]
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Sunil Goutham <sgoutham@cavium.com>
Cc: Chris Metcalf <cmetcalf@mellanox.com>
Cc: Manish Chopra <manish.chopra@qlogic.com>
Cc: Yuval Mintz <yuval.mintz@qlogic.com>
Cc: Tariq Toukan <tariqt@mellanox.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/block/aoe')
| -rw-r--r-- | drivers/block/aoe/aoecmd.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c index 437b3a822f44..d597e432e195 100644 --- a/drivers/block/aoe/aoecmd.c +++ b/drivers/block/aoe/aoecmd.c @@ -861,7 +861,7 @@ rqbiocnt(struct request *r) * discussion. * * We cannot use get_page in the workaround, because it insists on a - * positive page count as a precondition. So we use _count directly. + * positive page count as a precondition. So we use _refcount directly. */ static void bio_pageinc(struct bio *bio) |