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| author | Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> | 2010-09-10 06:23:04 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-09-24 02:29:18 +0200 |
| commit | 56c9cfb13c9b6516017eea4e8cbe22ea02e07ee6 (patch) | |
| tree | 1b09c9350d8f48d81514f274a3a1933dc9f1a2ef /fs/btrfs/extent-tree.c | |
| parent | hugetlb, rmap: use hugepage_add_new_anon_rmap() in hugetlb_cow() (diff) | |
| download | linux-56c9cfb13c9b6516017eea4e8cbe22ea02e07ee6.tar.xz linux-56c9cfb13c9b6516017eea4e8cbe22ea02e07ee6.zip | |
hugetlb, rmap: fix confusing page locking in hugetlb_cow()
The "if (!trylock_page)" block in the avoidcopy path of hugetlb_cow()
looks confusing and is buggy. Originally this trylock_page() was
intended to make sure that old_page is locked even when old_page !=
pagecache_page, because then only pagecache_page is locked.
This patch fixes it by moving page locking into hugetlb_fault().
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/btrfs/extent-tree.c')
0 files changed, 0 insertions, 0 deletions