Calculate new position before validtiy check in lseek() to simplify
code a bit as well as make following commit simpler. This should be
harmless thing to do, since we don't actually use calculated value
unless it passes the validity check.

Signed-off-by: Andrey Smirnov <andrew.smir...@gmail.com>
---
 fs/fs.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/fs/fs.c b/fs/fs.c
index 6a62fb98b..9372b9981 100644
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -421,21 +421,21 @@ loff_t lseek(int fildes, loff_t offset, int whence)
 
        switch (whence) {
        case SEEK_SET:
+               pos = offset;
                if (f->size != FILE_SIZE_STREAM && offset > f->size)
                        goto out;
                if (IS_ERR_VALUE(offset))
                        goto out;
-               pos = offset;
                break;
        case SEEK_CUR:
-               if (f->size != FILE_SIZE_STREAM && offset + f->pos > f->size)
-                       goto out;
                pos = f->pos + offset;
+               if (f->size != FILE_SIZE_STREAM && pos > f->size)
+                       goto out;
                break;
        case SEEK_END:
+               pos = f->size + offset;
                if (offset > 0)
                        goto out;
-               pos = f->size + offset;
                break;
        default:
                goto out;
-- 
2.20.1


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