coredump: get rid of coredump_params->written

cprm->written is redundant with cprm->file->f_pos, so use that instead.

Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

5 files changed, 8 insertions, 10 deletions

diff --git a/arch/powerpc/platforms/cell/spufs/coredump.c b/arch/powerpc/platforms/cell/spufs/coredump.c
index be6212ddbf06..84fb984f29c1 100644
--- a/arch/powerpc/platforms/cell/spufs/coredump.c
+++ b/arch/powerpc/platforms/cell/spufs/coredump.c
@@ -137,6 +137,7 @@ static int spufs_arch_write_note(struct spu_context *ctx, int i,
         char *name;
         char fullname[80], *buf;
         struct elf_note en;
+        size_t skip;
 
         buf = (void *)get_zeroed_page(GFP_KERNEL);
         if (!buf)
@@ -171,8 +172,8 @@ static int spufs_arch_write_note(struct spu_context *ctx, int i,
         if (rc < 0)
                 goto out;
 
-        if (!dump_skip(cprm,
-                       roundup(cprm->written - total + sz, 4) - cprm->written))
+        skip = roundup(cprm->file->f_pos - total + sz, 4) - cprm->file->f_pos;
+        if (!dump_skip(cprm, skip))
                 goto Eio;
 out:
         free_page((unsigned long)buf);
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 7d914c67a9d0..f5ce8f4e00b0 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -2273,7 +2273,7 @@ static int elf_core_dump(struct coredump_params *cprm)
                 goto end_coredump;
 
         /* Align to page */
-        if (!dump_skip(cprm, dataoff - cprm->written))
+        if (!dump_skip(cprm, dataoff - cprm->file->f_pos))
                 goto end_coredump;
 
         for (i = 0, vma = first_vma(current, gate_vma); vma != NULL;
diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index b1adb92e69de..8cfde2482468 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -1787,7 +1787,7 @@ static int elf_fdpic_core_dump(struct coredump_params *cprm)
                                 goto end_coredump;
         }
 
-        if (!dump_skip(cprm, dataoff - cprm->written))
+        if (!dump_skip(cprm, dataoff - cprm->file->f_pos))
                 goto end_coredump;
 
         if (!elf_fdpic_dump_segments(cprm))
diff --git a/fs/coredump.c b/fs/coredump.c
index 47c32c3bfa1d..9db0c514438e 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -782,7 +782,7 @@ int dump_emit(struct coredump_params *cprm, const void *addr, int nr)
         struct file *file = cprm->file;
         loff_t pos = file->f_pos;
         ssize_t n;
-        if (cprm->written + nr > cprm->limit)
+        if (pos + nr > cprm->limit)
                 return 0;
         while (nr) {
                 if (dump_interrupted())
@@ -791,7 +791,6 @@ int dump_emit(struct coredump_params *cprm, const void *addr, int nr)
                 if (n <= 0)
                         return 0;
                 file->f_pos = pos;
-                cprm->written += n;
                 nr -= n;
         }
         return 1;
@@ -803,12 +802,11 @@ int dump_skip(struct coredump_params *cprm, size_t nr)
         static char zeroes[PAGE_SIZE];
         struct file *file = cprm->file;
         if (file->f_op->llseek && file->f_op->llseek != no_llseek) {
-                if (cprm->written + nr > cprm->limit)
+                if (file->f_pos + nr > cprm->limit)
                         return 0;
                 if (dump_interrupted() ||
                     file->f_op->llseek(file, nr, SEEK_CUR) < 0)
                         return 0;
-                cprm->written += nr;
                 return 1;
         } else {
                 while (nr > PAGE_SIZE) {
@@ -823,7 +821,7 @@ EXPORT_SYMBOL(dump_skip);
 
 int dump_align(struct coredump_params *cprm, int align)
 {
-        unsigned mod = cprm->written & (align - 1);
+        unsigned mod = cprm->file->f_pos & (align - 1);
         if (align & (align - 1))
                 return 0;
         return mod ? dump_skip(cprm, align - mod) : 1;
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index 576e4639ca60..39c6d6e1234e 100644
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -64,7 +64,6 @@ struct coredump_params {
         struct file *file;
         unsigned long limit;
         unsigned long mm_flags;
-        loff_t written;
 };
 
 /*