erofs: add "erofs_" prefix for common and short functions

Add erofs_ prefix to free_inode, alloc_inode, ...

Reported-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Link: https://lore.kernel.org/r/20190904020912.63925-19-gaoxiang25@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

7 files changed, 54 insertions, 53 deletions

diff --git a/fs/erofs/data.c b/fs/erofs/data.c
index 70b1e353756e..3ce87a88452a 100644
--- a/fs/erofs/data.c
+++ b/fs/erofs/data.c
@@ -9,7 +9,7 @@
 
 #include <trace/events/erofs.h>
 
-static inline void read_endio(struct bio *bio)
+static void erofs_readendio(struct bio *bio)
 {
         struct super_block *const sb = bio->bi_private;
         struct bio_vec *bvec;
@@ -45,7 +45,7 @@ static struct bio *erofs_grab_raw_bio(struct super_block *sb,
 {
         struct bio *bio = bio_alloc(GFP_NOIO, nr_pages);
 
-        bio->bi_end_io = read_endio;
+        bio->bi_end_io = erofs_readendio;
         bio_set_dev(bio, sb->s_bdev);
         bio->bi_iter.bi_sector = (sector_t)blkaddr << LOG_SECTORS_PER_BLOCK;
         bio->bi_private = sb;
diff --git a/fs/erofs/decompressor.c b/fs/erofs/decompressor.c
index 555c04730f87..8ed38504a9f1 100644
--- a/fs/erofs/decompressor.c
+++ b/fs/erofs/decompressor.c
@@ -32,8 +32,8 @@ static bool use_vmap;
 module_param(use_vmap, bool, 0444);
 MODULE_PARM_DESC(use_vmap, "Use vmap() instead of vm_map_ram() (default 0)");
 
-static int lz4_prepare_destpages(struct z_erofs_decompress_req *rq,
-                                 struct list_head *pagepool)
+static int z_erofs_lz4_prepare_destpages(struct z_erofs_decompress_req *rq,
+                                         struct list_head *pagepool)
 {
         const unsigned int nr =
                 PAGE_ALIGN(rq->pageofs_out + rq->outputsize) >> PAGE_SHIFT;
@@ -114,7 +114,7 @@ static void *generic_copy_inplace_data(struct z_erofs_decompress_req *rq,
         return tmp;
 }
 
-static int lz4_decompress(struct z_erofs_decompress_req *rq, u8 *out)
+static int z_erofs_lz4_decompress(struct z_erofs_decompress_req *rq, u8 *out)
 {
         unsigned int inputmargin, inlen;
         u8 *src;
@@ -188,8 +188,8 @@ static struct z_erofs_decompressor decompressors[] = {
                 .name = "shifted"
         },
         [Z_EROFS_COMPRESSION_LZ4] = {
-                .prepare_destpages = lz4_prepare_destpages,
-                .decompress = lz4_decompress,
+                .prepare_destpages = z_erofs_lz4_prepare_destpages,
+                .decompress = z_erofs_lz4_decompress,
                 .name = "lz4"
         },
 };
@@ -247,8 +247,8 @@ static void erofs_vunmap(const void *mem, unsigned int count)
                 vunmap(mem);
 }
 
-static int decompress_generic(struct z_erofs_decompress_req *rq,
-                              struct list_head *pagepool)
+static int z_erofs_decompress_generic(struct z_erofs_decompress_req *rq,
+                                      struct list_head *pagepool)
 {
         const unsigned int nrpages_out =
                 PAGE_ALIGN(rq->pageofs_out + rq->outputsize) >> PAGE_SHIFT;
@@ -308,8 +308,8 @@ dstmap_out:
         return ret;
 }
 
-static int shifted_decompress(const struct z_erofs_decompress_req *rq,
-                              struct list_head *pagepool)
+static int z_erofs_shifted_transform(const struct z_erofs_decompress_req *rq,
+                                     struct list_head *pagepool)
 {
         const unsigned int nrpages_out =
                 PAGE_ALIGN(rq->pageofs_out + rq->outputsize) >> PAGE_SHIFT;
@@ -353,7 +353,7 @@ int z_erofs_decompress(struct z_erofs_decompress_req *rq,
                        struct list_head *pagepool)
 {
         if (rq->alg == Z_EROFS_COMPRESSION_SHIFTED)
-                return shifted_decompress(rq, pagepool);
-        return decompress_generic(rq, pagepool);
+                return z_erofs_shifted_transform(rq, pagepool);
+        return z_erofs_decompress_generic(rq, pagepool);
 }
 
diff --git a/fs/erofs/inode.c b/fs/erofs/inode.c
index 8d496adbeaea..384905e0677c 100644
--- a/fs/erofs/inode.c
+++ b/fs/erofs/inode.c
@@ -9,7 +9,7 @@
 #include <trace/events/erofs.h>
 
 /* no locking */
-static int read_inode(struct inode *inode, void *data)
+static int erofs_read_inode(struct inode *inode, void *data)
 {
         struct erofs_inode *vi = EROFS_I(inode);
         struct erofs_inode_compact *dic = data;
@@ -163,7 +163,7 @@ static int erofs_fill_symlink(struct inode *inode, void *data,
         return 0;
 }
 
-static int fill_inode(struct inode *inode, int isdir)
+static int erofs_fill_inode(struct inode *inode, int isdir)
 {
         struct erofs_sb_info *sbi = EROFS_SB(inode->i_sb);
         struct erofs_inode *vi = EROFS_I(inode);
@@ -193,7 +193,7 @@ static int fill_inode(struct inode *inode, int isdir)
         DBG_BUGON(!PageUptodate(page));
         data = page_address(page);
 
-        err = read_inode(inode, data + ofs);
+        err = erofs_read_inode(inode, data + ofs);
         if (!err) {
                 /* setup the new inode */
                 switch (inode->i_mode & S_IFMT) {
@@ -286,7 +286,7 @@ struct inode *erofs_iget(struct super_block *sb,
 
                 vi->nid = nid;
 
-                err = fill_inode(inode, isdir);
+                err = erofs_fill_inode(inode, isdir);
                 if (!err)
                         unlock_new_inode(inode);
                 else {
diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h
index 13c8d841c43a..881eb2ee18b5 100644
--- a/fs/erofs/internal.h
+++ b/fs/erofs/internal.h
@@ -308,7 +308,7 @@ struct erofs_inode {
 #define EROFS_I(ptr)    \
         container_of(ptr, struct erofs_inode, vfs_inode)
 
-static inline unsigned long inode_datablocks(struct inode *inode)
+static inline unsigned long erofs_inode_datablocks(struct inode *inode)
 {
         /* since i_size cannot be changed */
         return DIV_ROUND_UP(inode->i_size, EROFS_BLKSIZ);
diff --git a/fs/erofs/namei.c b/fs/erofs/namei.c
index a6b6a4ab1403..6debc1d88282 100644
--- a/fs/erofs/namei.c
+++ b/fs/erofs/namei.c
@@ -14,9 +14,9 @@ struct erofs_qstr {
 };
 
 /* based on the end of qn is accurate and it must have the trailing '\0' */
-static inline int dirnamecmp(const struct erofs_qstr *qn,
-                             const struct erofs_qstr *qd,
-                             unsigned int *matched)
+static inline int erofs_dirnamecmp(const struct erofs_qstr *qn,
+                                   const struct erofs_qstr *qd,
+                                   unsigned int *matched)
 {
         unsigned int i = *matched;
 
@@ -71,7 +71,7 @@ static struct erofs_dirent *find_target_dirent(struct erofs_qstr *name,
                 };
 
                 /* string comparison without already matched prefix */
-                int ret = dirnamecmp(name, &dname, &matched);
+                int ret = erofs_dirnamecmp(name, &dname, &matched);
 
                 if (!ret) {
                         return de + mid;
@@ -98,7 +98,7 @@ static struct page *find_target_block_classic(struct inode *dir,
 
         startprfx = endprfx = 0;
         head = 0;
-        back = inode_datablocks(dir) - 1;
+        back = erofs_inode_datablocks(dir) - 1;
 
         while (head <= back) {
                 const int mid = head + (back - head) / 2;
@@ -134,7 +134,7 @@ static struct page *find_target_block_classic(struct inode *dir,
                                                           EROFS_BLKSIZ);
 
                         /* string comparison without already matched prefix */
-                        diff = dirnamecmp(name, &dname, &matched);
+                        diff = erofs_dirnamecmp(name, &dname, &matched);
                         kunmap_atomic(de);
 
                         if (!diff) {
diff --git a/fs/erofs/super.c b/fs/erofs/super.c
index b64d69f18270..36e569a79172 100644
--- a/fs/erofs/super.c
+++ b/fs/erofs/super.c
@@ -16,14 +16,14 @@
 
 static struct kmem_cache *erofs_inode_cachep __read_mostly;
 
-static void init_once(void *ptr)
+static void erofs_inode_init_once(void *ptr)
 {
         struct erofs_inode *vi = ptr;
 
         inode_init_once(&vi->vfs_inode);
 }
 
-static struct inode *alloc_inode(struct super_block *sb)
+static struct inode *erofs_alloc_inode(struct super_block *sb)
 {
         struct erofs_inode *vi =
                 kmem_cache_alloc(erofs_inode_cachep, GFP_KERNEL);
@@ -36,7 +36,7 @@ static struct inode *alloc_inode(struct super_block *sb)
         return &vi->vfs_inode;
 }
 
-static void free_inode(struct inode *inode)
+static void erofs_free_inode(struct inode *inode)
 {
         struct erofs_inode *vi = EROFS_I(inode);
 
@@ -64,7 +64,7 @@ static bool check_layout_compatibility(struct super_block *sb,
         return true;
 }
 
-static int superblock_read(struct super_block *sb)
+static int erofs_read_superblock(struct super_block *sb)
 {
         struct erofs_sb_info *sbi;
         struct buffer_head *bh;
@@ -218,7 +218,7 @@ static int erofs_build_cache_strategy(struct erofs_sb_info *sbi,
 #endif
 
 /* set up default EROFS parameters */
-static void default_options(struct erofs_sb_info *sbi)
+static void erofs_default_options(struct erofs_sb_info *sbi)
 {
 #ifdef CONFIG_EROFS_FS_ZIP
         sbi->cache_strategy = EROFS_ZIP_CACHE_READAROUND;
@@ -252,7 +252,7 @@ static match_table_t erofs_tokens = {
         {Opt_err, NULL}
 };
 
-static int parse_options(struct super_block *sb, char *options)
+static int erofs_parse_options(struct super_block *sb, char *options)
 {
         substring_t args[MAX_OPT_ARGS];
         char *p;
@@ -322,7 +322,7 @@ static int parse_options(struct super_block *sb, char *options)
 #ifdef CONFIG_EROFS_FS_ZIP
 static const struct address_space_operations managed_cache_aops;
 
-static int managed_cache_releasepage(struct page *page, gfp_t gfp_mask)
+static int erofs_managed_cache_releasepage(struct page *page, gfp_t gfp_mask)
 {
         int ret = 1;    /* 0 - busy */
         struct address_space *const mapping = page->mapping;
@@ -336,9 +336,9 @@ static int managed_cache_releasepage(struct page *page, gfp_t gfp_mask)
         return ret;
 }
 
-static void managed_cache_invalidatepage(struct page *page,
-                                         unsigned int offset,
-                                         unsigned int length)
+static void erofs_managed_cache_invalidatepage(struct page *page,
+                                               unsigned int offset,
+                                               unsigned int length)
 {
         const unsigned int stop = length + offset;
 
@@ -348,13 +348,13 @@ static void managed_cache_invalidatepage(struct page *page,
         DBG_BUGON(stop > PAGE_SIZE || stop < length);
 
         if (offset == 0 && stop == PAGE_SIZE)
-                while (!managed_cache_releasepage(page, GFP_NOFS))
+                while (!erofs_managed_cache_releasepage(page, GFP_NOFS))
                         cond_resched();
 }
 
 static const struct address_space_operations managed_cache_aops = {
-        .releasepage = managed_cache_releasepage,
-        .invalidatepage = managed_cache_invalidatepage,
+        .releasepage = erofs_managed_cache_releasepage,
+        .invalidatepage = erofs_managed_cache_invalidatepage,
 };
 
 static int erofs_init_managed_cache(struct super_block *sb)
@@ -396,7 +396,7 @@ static int erofs_fill_super(struct super_block *sb, void *data, int silent)
                 return -ENOMEM;
 
         sb->s_fs_info = sbi;
-        err = superblock_read(sb);
+        err = erofs_read_superblock(sb);
         if (err)
                 return err;
 
@@ -410,9 +410,9 @@ static int erofs_fill_super(struct super_block *sb, void *data, int silent)
         sb->s_xattr = erofs_xattr_handlers;
 #endif
         /* set erofs default mount options */
-        default_options(sbi);
+        erofs_default_options(sbi);
 
-        err = parse_options(sb, data);
+        err = erofs_parse_options(sb, data);
         if (err)
                 return err;
 
@@ -512,7 +512,7 @@ static int __init erofs_module_init(void)
         erofs_inode_cachep = kmem_cache_create("erofs_inode",
                                                sizeof(struct erofs_inode), 0,
                                                SLAB_RECLAIM_ACCOUNT,
-                                               init_once);
+                                               erofs_inode_init_once);
         if (!erofs_inode_cachep) {
                 err = -ENOMEM;
                 goto icache_err;
@@ -619,7 +619,7 @@ static int erofs_remount(struct super_block *sb, int *flags, char *data)
         int err;
 
         DBG_BUGON(!sb_rdonly(sb));
-        err = parse_options(sb, data);
+        err = erofs_parse_options(sb, data);
         if (err)
                 goto out;
 
@@ -639,8 +639,8 @@ out:
 
 const struct super_operations erofs_sops = {
         .put_super = erofs_put_super,
-        .alloc_inode = alloc_inode,
-        .free_inode = free_inode,
+        .alloc_inode = erofs_alloc_inode,
+        .free_inode = erofs_free_inode,
         .statfs = erofs_statfs,
         .show_options = erofs_show_options,
         .remount_fs = erofs_remount,
diff --git a/fs/erofs/zdata.c b/fs/erofs/zdata.c
index 3010fa3d1ac3..8587d6751c48 100644
--- a/fs/erofs/zdata.c
+++ b/fs/erofs/zdata.c
@@ -40,7 +40,7 @@ void z_erofs_exit_zip_subsystem(void)
         kmem_cache_destroy(pcluster_cachep);
 }
 
-static inline int init_unzip_workqueue(void)
+static inline int z_erofs_init_workqueue(void)
 {
         const unsigned int onlinecpus = num_possible_cpus();
         const unsigned int flags = WQ_UNBOUND | WQ_HIGHPRI | WQ_CPU_INTENSIVE;
@@ -54,7 +54,7 @@ static inline int init_unzip_workqueue(void)
         return z_erofs_workqueue ? 0 : -ENOMEM;
 }
 
-static void init_once(void *ptr)
+static void z_erofs_pcluster_init_once(void *ptr)
 {
         struct z_erofs_pcluster *pcl = ptr;
         struct z_erofs_collection *cl = z_erofs_primarycollection(pcl);
@@ -67,7 +67,7 @@ static void init_once(void *ptr)
                 pcl->compressed_pages[i] = NULL;
 }
 
-static void init_always(struct z_erofs_pcluster *pcl)
+static void z_erofs_pcluster_init_always(struct z_erofs_pcluster *pcl)
 {
         struct z_erofs_collection *cl = z_erofs_primarycollection(pcl);
 
@@ -81,9 +81,10 @@ int __init z_erofs_init_zip_subsystem(void)
 {
         pcluster_cachep = kmem_cache_create("erofs_compress",
                                             Z_EROFS_WORKGROUP_SIZE, 0,
-                                            SLAB_RECLAIM_ACCOUNT, init_once);
+                                            SLAB_RECLAIM_ACCOUNT,
+                                            z_erofs_pcluster_init_once);
         if (pcluster_cachep) {
-                if (!init_unzip_workqueue())
+                if (!z_erofs_init_workqueue())
                         return 0;
 
                 kmem_cache_destroy(pcluster_cachep);
@@ -272,8 +273,8 @@ int erofs_try_to_free_cached_page(struct address_space *mapping,
 }
 
 /* page_type must be Z_EROFS_PAGE_TYPE_EXCLUSIVE */
-static inline bool try_inplace_io(struct z_erofs_collector *clt,
-                                  struct page *page)
+static inline bool z_erofs_try_inplace_io(struct z_erofs_collector *clt,
+                                          struct page *page)
 {
         struct z_erofs_pcluster *const pcl = clt->pcl;
         const unsigned int clusterpages = BIT(pcl->clusterbits);
@@ -296,7 +297,7 @@ static int z_erofs_attach_page(struct z_erofs_collector *clt,
         /* give priority for inplaceio */
         if (clt->mode >= COLLECT_PRIMARY &&
             type == Z_EROFS_PAGE_TYPE_EXCLUSIVE &&
-            try_inplace_io(clt, page))
+            z_erofs_try_inplace_io(clt, page))
                 return 0;
 
         ret = z_erofs_pagevec_enqueue(&clt->vector,
@@ -409,7 +410,7 @@ static struct z_erofs_collection *clregister(struct z_erofs_collector *clt,
         if (!pcl)
                 return ERR_PTR(-ENOMEM);
 
-        init_always(pcl);
+        z_erofs_pcluster_init_always(pcl);
         pcl->obj.index = map->m_pa >> PAGE_SHIFT;
 
         pcl->length = (map->m_llen << Z_EROFS_PCLUSTER_LENGTH_BIT) |