Btrfs: use linux/sizes.h to represent constants
We use many constants to represent size and offset value. And to make
code readable we use '256 * 1024 * 1024' instead of '268435456' to
represent '256MB'. However we can make far more readable with 'SZ_256MB'
which is defined in the 'linux/sizes.h'.
So this patch replaces 'xxx * 1024 * 1024' kind of expression with
single 'SZ_xxxMB' if 'xxx' is a power of 2 then 'xxx * SZ_1M' if 'xxx' is
not a power of 2. And I haven't touched to '4096' & '8192' because it's
more intuitive than 'SZ_4KB' & 'SZ_8KB'.
Signed-off-by: Byongho Lee <bhlee.kernel@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 9abe187..43a5c5b 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -4387,7 +4387,7 @@
u64 end = start + PAGE_CACHE_SIZE - 1;
if (gfpflags_allow_blocking(mask) &&
- page->mapping->host->i_size > 16 * 1024 * 1024) {
+ page->mapping->host->i_size > SZ_16M) {
u64 len;
while (start <= end) {
len = end - start + 1;