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authorDavid Sterba <dsterba@suse.com>2017-03-29 20:48:44 +0200
committerDavid Sterba <dsterba@suse.com>2017-04-18 14:07:26 +0200
commit619a974292387343c817f5a36e9df6daeb3ccc60 (patch)
tree84054ab9ab18ebbbca66634fd07976b0f7f6f782 /fs/btrfs
parente501bfe323356ea3f7ef79d4b0d95389b70a7193 (diff)
downloadlinux-619a974292387343c817f5a36e9df6daeb3ccc60.tar.bz2
btrfs: use clear_page where appropriate
There's a helper to clear whole page, with a arch-specific optimized code. The replaced cases do not seem to be in performace critical code, but we still might get some percent gain. Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/free-space-cache.c2
-rw-r--r--fs/btrfs/scrub.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index da6841efac26..c5e6180cdb8c 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -355,7 +355,7 @@ static void io_ctl_map_page(struct btrfs_io_ctl *io_ctl, int clear)
io_ctl->orig = io_ctl->cur;
io_ctl->size = PAGE_SIZE;
if (clear)
- memset(io_ctl->cur, 0, PAGE_SIZE);
+ clear_page(io_ctl->cur);
}
static void io_ctl_drop_pages(struct btrfs_io_ctl *io_ctl)
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index c4d1e60e831e..48dd6f170c36 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -1643,7 +1643,7 @@ static int scrub_write_page_to_dev_replace(struct scrub_block *sblock,
if (spage->io_error) {
void *mapped_buffer = kmap_atomic(spage->page);
- memset(mapped_buffer, 0, PAGE_SIZE);
+ clear_page(mapped_buffer);
flush_dcache_page(spage->page);
kunmap_atomic(mapped_buffer);
}