btrfs: rename variables clashing with global function names

reported by gcc -Wshadow:
page_index, page_offset, new_inode, dev_name

Signed-off-by: David Sterba <dsterba@suse.cz>

8 files changed, 53 insertions, 53 deletions

diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 41d1d7c70e29..d4cd0f0cd695 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -332,7 +332,7 @@ int btrfs_submit_compressed_write(struct inode *inode, u64 start,
         struct compressed_bio *cb;
         unsigned long bytes_left;
         struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
-        int page_index = 0;
+        int pg_index = 0;
         struct page *page;
         u64 first_byte = disk_start;
         struct block_device *bdev;
@@ -366,8 +366,8 @@ int btrfs_submit_compressed_write(struct inode *inode, u64 start,
 
         /* create and submit bios for the compressed pages */
         bytes_left = compressed_len;
-        for (page_index = 0; page_index < cb->nr_pages; page_index++) {
-                page = compressed_pages[page_index];
+        for (pg_index = 0; pg_index < cb->nr_pages; pg_index++) {
+                page = compressed_pages[pg_index];
                 page->mapping = inode->i_mapping;
                 if (bio->bi_size)
                         ret = io_tree->ops->merge_bio_hook(page, 0,
@@ -432,7 +432,7 @@ static noinline int add_ra_bio_pages(struct inode *inode,
                                      struct compressed_bio *cb)
 {
         unsigned long end_index;
-        unsigned long page_index;
+        unsigned long pg_index;
         u64 last_offset;
         u64 isize = i_size_read(inode);
         int ret;
@@ -456,13 +456,13 @@ static noinline int add_ra_bio_pages(struct inode *inode,
         end_index = (i_size_read(inode) - 1) >> PAGE_CACHE_SHIFT;
 
         while (last_offset < compressed_end) {
-                page_index = last_offset >> PAGE_CACHE_SHIFT;
+                pg_index = last_offset >> PAGE_CACHE_SHIFT;
 
-                if (page_index > end_index)
+                if (pg_index > end_index)
                         break;
 
                 rcu_read_lock();
-                page = radix_tree_lookup(&mapping->page_tree, page_index);
+                page = radix_tree_lookup(&mapping->page_tree, pg_index);
                 rcu_read_unlock();
                 if (page) {
                         misses++;
@@ -476,7 +476,7 @@ static noinline int add_ra_bio_pages(struct inode *inode,
                 if (!page)
                         break;
 
-                if (add_to_page_cache_lru(page, mapping, page_index,
+                if (add_to_page_cache_lru(page, mapping, pg_index,
                                                                 GFP_NOFS)) {
                         page_cache_release(page);
                         goto next;
@@ -560,7 +560,7 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
         unsigned long uncompressed_len = bio->bi_vcnt * PAGE_CACHE_SIZE;
         unsigned long compressed_len;
         unsigned long nr_pages;
-        unsigned long page_index;
+        unsigned long pg_index;
         struct page *page;
         struct block_device *bdev;
         struct bio *comp_bio;
@@ -613,10 +613,10 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
 
         bdev = BTRFS_I(inode)->root->fs_info->fs_devices->latest_bdev;
 
-        for (page_index = 0; page_index < nr_pages; page_index++) {
-                cb->compressed_pages[page_index] = alloc_page(GFP_NOFS |
+        for (pg_index = 0; pg_index < nr_pages; pg_index++) {
+                cb->compressed_pages[pg_index] = alloc_page(GFP_NOFS |
                                                               __GFP_HIGHMEM);
-                if (!cb->compressed_pages[page_index])
+                if (!cb->compressed_pages[pg_index])
                         goto fail2;
         }
         cb->nr_pages = nr_pages;
@@ -634,8 +634,8 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
         comp_bio->bi_end_io = end_compressed_bio_read;
         atomic_inc(&cb->pending_bios);
 
-        for (page_index = 0; page_index < nr_pages; page_index++) {
-                page = cb->compressed_pages[page_index];
+        for (pg_index = 0; pg_index < nr_pages; pg_index++) {
+                page = cb->compressed_pages[pg_index];
                 page->mapping = inode->i_mapping;
                 page->index = em_start >> PAGE_CACHE_SHIFT;
 
@@ -702,8 +702,8 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio,
         return 0;
 
 fail2:
-        for (page_index = 0; page_index < nr_pages; page_index++)
-                free_page((unsigned long)cb->compressed_pages[page_index]);
+        for (pg_index = 0; pg_index < nr_pages; pg_index++)
+                free_page((unsigned long)cb->compressed_pages[pg_index]);
 
         kfree(cb->compressed_pages);
 fail1:
@@ -945,7 +945,7 @@ void btrfs_exit_compress(void)
 int btrfs_decompress_buf2page(char *buf, unsigned long buf_start,
                               unsigned long total_out, u64 disk_start,
                               struct bio_vec *bvec, int vcnt,
-                              unsigned long *page_index,
+                              unsigned long *pg_index,
                               unsigned long *pg_offset)
 {
         unsigned long buf_offset;
@@ -954,7 +954,7 @@ int btrfs_decompress_buf2page(char *buf, unsigned long buf_start,
         unsigned long working_bytes = total_out - buf_start;
         unsigned long bytes;
         char *kaddr;
-        struct page *page_out = bvec[*page_index].bv_page;
+        struct page *page_out = bvec[*pg_index].bv_page;
 
         /*
          * start byte is the first byte of the page we're currently
@@ -995,11 +995,11 @@ int btrfs_decompress_buf2page(char *buf, unsigned long buf_start,
 
                 /* check if we need to pick another page */
                 if (*pg_offset == PAGE_CACHE_SIZE) {
-                        (*page_index)++;
-                        if (*page_index >= vcnt)
+                        (*pg_index)++;
+                        if (*pg_index >= vcnt)
                                 return 0;
 
-                        page_out = bvec[*page_index].bv_page;
+                        page_out = bvec[*pg_index].bv_page;
                         *pg_offset = 0;
                         start_byte = page_offset(page_out) - disk_start;
 
diff --git a/fs/btrfs/compression.h b/fs/btrfs/compression.h
index 51000174b9d7..a12059f4f0fd 100644
--- a/fs/btrfs/compression.h
+++ b/fs/btrfs/compression.h
@@ -37,7 +37,7 @@ int btrfs_decompress(int type, unsigned char *data_in, struct page *dest_page,
 int btrfs_decompress_buf2page(char *buf, unsigned long buf_start,
                               unsigned long total_out, u64 disk_start,
                               struct bio_vec *bvec, int vcnt,
-                              unsigned long *page_index,
+                              unsigned long *pg_index,
                               unsigned long *pg_offset);
 
 int btrfs_submit_compressed_write(struct inode *inode, u64 start,
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 8f4b81de3ae2..b5433bbe7516 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2534,7 +2534,7 @@ struct inode *btrfs_iget(struct super_block *s, struct btrfs_key *location,
 int btrfs_commit_write(struct file *file, struct page *page,
                        unsigned from, unsigned to);
 struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page,
-                                    size_t page_offset, u64 start, u64 end,
+                                    size_t pg_offset, u64 start, u64 end,
                                     int create);
 int btrfs_update_inode(struct btrfs_trans_handle *trans,
                               struct btrfs_root *root,
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 228cf36ece83..990afa8656a2 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -137,7 +137,7 @@ static const char *btrfs_eb_name[BTRFS_MAX_LEVEL + 1] = {
  * that covers the entire device
  */
 static struct extent_map *btree_get_extent(struct inode *inode,
-                struct page *page, size_t page_offset, u64 start, u64 len,
+                struct page *page, size_t pg_offset, u64 start, u64 len,
                 int create)
 {
         struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree;
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index ba41da59e31b..b730c12fa958 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2007,7 +2007,7 @@ static int __extent_read_full_page(struct extent_io_tree *tree,
         struct btrfs_ordered_extent *ordered;
         int ret;
         int nr = 0;
-        size_t page_offset = 0;
+        size_t pg_offset = 0;
         size_t iosize;
         size_t disk_io_size;
         size_t blocksize = inode->i_sb->s_blocksize;
@@ -2043,9 +2043,9 @@ static int __extent_read_full_page(struct extent_io_tree *tree,
                         char *userpage;
                         struct extent_state *cached = NULL;
 
-                        iosize = PAGE_CACHE_SIZE - page_offset;
+                        iosize = PAGE_CACHE_SIZE - pg_offset;
                         userpage = kmap_atomic(page, KM_USER0);
-                        memset(userpage + page_offset, 0, iosize);
+                        memset(userpage + pg_offset, 0, iosize);
                         flush_dcache_page(page);
                         kunmap_atomic(userpage, KM_USER0);
                         set_extent_uptodate(tree, cur, cur + iosize - 1,
@@ -2054,7 +2054,7 @@ static int __extent_read_full_page(struct extent_io_tree *tree,
                                              &cached, GFP_NOFS);
                         break;
                 }
-                em = get_extent(inode, page, page_offset, cur,
+                em = get_extent(inode, page, pg_offset, cur,
                                 end - cur + 1, 0);
                 if (IS_ERR(em) || !em) {
                         SetPageError(page);
@@ -2094,7 +2094,7 @@ static int __extent_read_full_page(struct extent_io_tree *tree,
                         struct extent_state *cached = NULL;
 
                         userpage = kmap_atomic(page, KM_USER0);
-                        memset(userpage + page_offset, 0, iosize);
+                        memset(userpage + pg_offset, 0, iosize);
                         flush_dcache_page(page);
                         kunmap_atomic(userpage, KM_USER0);
 
@@ -2103,7 +2103,7 @@ static int __extent_read_full_page(struct extent_io_tree *tree,
                         unlock_extent_cached(tree, cur, cur + iosize - 1,
                                              &cached, GFP_NOFS);
                         cur = cur + iosize;
-                        page_offset += iosize;
+                        pg_offset += iosize;
                         continue;
                 }
                 /* the get_extent function already copied into the page */
@@ -2112,7 +2112,7 @@ static int __extent_read_full_page(struct extent_io_tree *tree,
                         check_page_uptodate(tree, page);
                         unlock_extent(tree, cur, cur + iosize - 1, GFP_NOFS);
                         cur = cur + iosize;
-                        page_offset += iosize;
+                        pg_offset += iosize;
                         continue;
                 }
                 /* we have an inline extent but it didn't get marked up
@@ -2122,7 +2122,7 @@ static int __extent_read_full_page(struct extent_io_tree *tree,
                         SetPageError(page);
                         unlock_extent(tree, cur, cur + iosize - 1, GFP_NOFS);
                         cur = cur + iosize;
-                        page_offset += iosize;
+                        pg_offset += iosize;
                         continue;
                 }
 
@@ -2135,7 +2135,7 @@ static int __extent_read_full_page(struct extent_io_tree *tree,
                         unsigned long pnr = (last_byte >> PAGE_CACHE_SHIFT) + 1;
                         pnr -= page->index;
                         ret = submit_extent_page(READ, tree, page,
-                                         sector, disk_io_size, page_offset,
+                                         sector, disk_io_size, pg_offset,
                                          bdev, bio, pnr,
                                          end_bio_extent_readpage, mirror_num,
                                          *bio_flags,
@@ -2146,7 +2146,7 @@ static int __extent_read_full_page(struct extent_io_tree *tree,
                 if (ret)
                         SetPageError(page);
                 cur = cur + iosize;
-                page_offset += iosize;
+                pg_offset += iosize;
         }
         if (!nr) {
                 if (!PageError(page))
@@ -2751,7 +2751,7 @@ int extent_prepare_write(struct extent_io_tree *tree,
         u64 cur_end;
         struct extent_map *em;
         unsigned blocksize = 1 << inode->i_blkbits;
-        size_t page_offset = 0;
+        size_t pg_offset = 0;
         size_t block_off_start;
         size_t block_off_end;
         int err = 0;
@@ -2767,7 +2767,7 @@ int extent_prepare_write(struct extent_io_tree *tree,
 
         lock_extent(tree, page_start, page_end, GFP_NOFS);
         while (block_start <= block_end) {
-                em = get_extent(inode, page, page_offset, block_start,
+                em = get_extent(inode, page, pg_offset, block_start,
                                 block_end - block_start + 1, 1);
                 if (IS_ERR(em) || !em)
                         goto err;
@@ -2811,7 +2811,7 @@ int extent_prepare_write(struct extent_io_tree *tree,
                                        block_start + iosize - 1,
                                        EXTENT_LOCKED, 0, NULL, NULL, GFP_NOFS);
                         ret = submit_extent_page(READ, tree, page,
-                                         sector, iosize, page_offset, em->bdev,
+                                         sector, iosize, pg_offset, em->bdev,
                                          NULL, 1,
                                          end_bio_extent_preparewrite, 0,
                                          0, 0);
@@ -2828,7 +2828,7 @@ int extent_prepare_write(struct extent_io_tree *tree,
                                              &cached, GFP_NOFS);
                         block_start = cur_end + 1;
                 }
-                page_offset = block_start & (PAGE_CACHE_SIZE - 1);
+                pg_offset = block_start & (PAGE_CACHE_SIZE - 1);
                 free_extent_map(em);
         }
         if (iocount) {
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index af2d7179c372..b9ce2f720742 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -164,7 +164,7 @@ static inline struct extent_state *extent_state_next(struct extent_state *state)
 
 typedef struct extent_map *(get_extent_t)(struct inode *inode,
                                           struct page *page,
-                                          size_t page_offset,
+                                          size_t pg_offset,
                                           u64 start, u64 len,
                                           int create);
 
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 7cd8ab0ef04d..fc966472e3ad 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -6985,7 +6985,7 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
         struct btrfs_trans_handle *trans;
         struct btrfs_root *root = BTRFS_I(old_dir)->root;
         struct btrfs_root *dest = BTRFS_I(new_dir)->root;
-        struct inode *new_inode = new_dentry->d_inode;
+        struct inode *newinode = new_dentry->d_inode;
         struct inode *old_inode = old_dentry->d_inode;
         struct timespec ctime = CURRENT_TIME;
         u64 index = 0;
@@ -7000,18 +7000,18 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
                 return -EXDEV;
 
         if (old_inode->i_ino == BTRFS_EMPTY_SUBVOL_DIR_OBJECTID ||
-            (new_inode && new_inode->i_ino == BTRFS_FIRST_FREE_OBJECTID))
+            (newinode && newinode->i_ino == BTRFS_FIRST_FREE_OBJECTID))
                 return -ENOTEMPTY;
 
-        if (S_ISDIR(old_inode->i_mode) && new_inode &&
-            new_inode->i_size > BTRFS_EMPTY_DIR_SIZE)
+        if (S_ISDIR(old_inode->i_mode) && newinode &&
+            newinode->i_size > BTRFS_EMPTY_DIR_SIZE)
                 return -ENOTEMPTY;
         /*
          * we're using rename to replace one file with another.
          * and the replacement file is large.  Start IO on it now so
          * we don't add too much work to the end of the transaction
          */
-        if (new_inode && S_ISREG(old_inode->i_mode) && new_inode->i_size &&
+        if (newinode && S_ISREG(old_inode->i_mode) && newinode->i_size &&
             old_inode->i_size > BTRFS_ORDERED_OPERATIONS_FLUSH_LIMIT)
                 filemap_flush(old_inode->i_mapping);
 
@@ -7065,7 +7065,7 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
          * make sure the inode gets flushed if it is replacing
          * something.
          */
-        if (new_inode && new_inode->i_size &&
+        if (newinode && newinode->i_size &&
             old_inode && S_ISREG(old_inode->i_mode)) {
                 btrfs_add_ordered_operation(trans, root, old_inode);
         }
@@ -7092,16 +7092,16 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
         }
         BUG_ON(ret);
 
-        if (new_inode) {
-                new_inode->i_ctime = CURRENT_TIME;
-                if (unlikely(new_inode->i_ino ==
+        if (newinode) {
+                newinode->i_ctime = CURRENT_TIME;
+                if (unlikely(newinode->i_ino ==
                              BTRFS_EMPTY_SUBVOL_DIR_OBJECTID)) {
-                        root_objectid = BTRFS_I(new_inode)->location.objectid;
+                        root_objectid = BTRFS_I(newinode)->location.objectid;
                         ret = btrfs_unlink_subvol(trans, dest, new_dir,
                                                 root_objectid,
                                                 new_dentry->d_name.name,
                                                 new_dentry->d_name.len);
-                        BUG_ON(new_inode->i_nlink == 0);
+                        BUG_ON(newinode->i_nlink == 0);
                 } else {
                         ret = btrfs_unlink_inode(trans, dest, new_dir,
                                                  new_dentry->d_inode,
@@ -7109,7 +7109,7 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
                                                  new_dentry->d_name.len);
                 }
                 BUG_ON(ret);
-                if (new_inode->i_nlink == 0) {
+                if (newinode->i_nlink == 0) {
                         ret = btrfs_orphan_add(trans, new_dentry->d_inode);
                         BUG_ON(ret);
                 }
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 0ac712efcdf2..3e28521643fb 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -739,7 +739,7 @@ static int btrfs_set_super(struct super_block *s, void *data)
  *        for multiple device setup.  Make sure to keep it in sync.
  */
 static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags,
-                const char *dev_name, void *data)
+                const char *device_name, void *data)
 {
         struct block_device *bdev = NULL;
         struct super_block *s;
@@ -762,7 +762,7 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags,
         if (error)
                 return ERR_PTR(error);
 
-        error = btrfs_scan_one_device(dev_name, mode, fs_type, &fs_devices);
+        error = btrfs_scan_one_device(device_name, mode, fs_type, &fs_devices);
         if (error)
                 goto error_free_subvol_name;