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btrfs: Remove isize local variable in compress_file_range 

It's used only once so just inline the call to i_size_read. The
semantics regarding the inode size are not changed, the pages in the
range are locked and i_size cannot change between the time it was set
and used.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Nikolay Borisov 2019-01-03 10:50:00 +02:00 committed by David Sterba
parent 532425ff9e
commit 62b3762271
1 changed files with 1 additions and 2 deletions
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3
fs/btrfs/inode.c
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@ -453,7 +453,6 @@ static noinline void compress_file_range(struct inode *inode,
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
u64 blocksize = fs_info->sectorsize;
u64 actual_end;
u64 isize = i_size_read(inode);
int ret = 0;
struct page **pages = NULL;
unsigned long nr_pages;
@ -467,7 +466,7 @@ static noinline void compress_file_range(struct inode *inode,
inode_should_defrag(BTRFS_I(inode), start, end, end - start + 1,
SZ_16K);
actual_end = min_t(u64, isize, end + 1);
actual_end = min_t(u64, i_size_read(inode), end + 1);
again:
will_compress = 0;
nr_pages = (end >> PAGE_SHIFT) - (start >> PAGE_SHIFT) + 1;