Make sure compiler won't do weird things with limits. E.g. fetching
them twice may return 2 different values after writable limits are
implemented.

I.e. either use rlimit helpers added in
3e10e716abf3c71bdb5d86b8f507f9e72236c9cd
or ACCESS_ONCE if not applicable.

Signed-off-by: Jiri Slaby <[email protected]>
Cc: Chris Mason <[email protected]>
Cc: [email protected]
---
 fs/btrfs/inode.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index c41db6d..5aa0cef 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -3256,8 +3256,7 @@ static int btrfs_setattr_size(struct inode *inode, struct 
iattr *attr)
                return 0;
 
        if (attr->ia_size > inode->i_size) {
-               unsigned long limit;
-               limit = current->signal->rlim[RLIMIT_FSIZE].rlim_cur;
+               unsigned long limit = rlimit(RLIMIT_FSIZE);
                if (attr->ia_size > inode->i_sb->s_maxbytes)
                        return -EFBIG;
                if (limit != RLIM_INFINITY && attr->ia_size > limit) {
-- 
1.6.6.1

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