From 3af1efe8a301f5b1c813f5f761cb1e10d6175605 Mon Sep 17 00:00:00 2001 From: Jeff Mahoney Date: Thu, 2 Mar 2006 13:25:26 -0500 Subject: [PATCH] [PATCH] reiserfs: fix unaligned bitmap usage The bitmaps associated with generation numbers for directory entries are declared as an array of ints. On some platforms, this causes alignment exceptions. The following patch uses the standard bitmap declaration macros to declare the bitmaps, fixing the problem. Originally from Takashi Iwai. Signed-off-by: Takashi Iwai Acked-by: Jeff Mahoney Signed-off-by: Linus Torvalds --- fs/reiserfs/namei.c | 8 ++++---- include/linux/reiserfs_fs.h | 2 +- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c index c8123308e06..284f7852de8 100644 --- a/fs/reiserfs/namei.c +++ b/fs/reiserfs/namei.c @@ -247,7 +247,7 @@ static int linear_search_in_dir_item(struct cpu_key *key, /* mark, that this generation number is used */ if (de->de_gen_number_bit_string) set_bit(GET_GENERATION_NUMBER(deh_offset(deh)), - (unsigned long *)de->de_gen_number_bit_string); + de->de_gen_number_bit_string); // calculate pointer to name and namelen de->de_entry_num = i; @@ -431,7 +431,7 @@ static int reiserfs_add_entry(struct reiserfs_transaction_handle *th, struct reiserfs_de_head *deh; INITIALIZE_PATH(path); struct reiserfs_dir_entry de; - int bit_string[MAX_GENERATION_NUMBER / (sizeof(int) * 8) + 1]; + DECLARE_BITMAP(bit_string, MAX_GENERATION_NUMBER + 1); int gen_number; char small_buf[32 + DEH_SIZE]; /* 48 bytes now and we avoid kmalloc if we create file with short name */ @@ -486,7 +486,7 @@ static int reiserfs_add_entry(struct reiserfs_transaction_handle *th, /* find the proper place for the new entry */ memset(bit_string, 0, sizeof(bit_string)); - de.de_gen_number_bit_string = (char *)bit_string; + de.de_gen_number_bit_string = bit_string; retval = reiserfs_find_entry(dir, name, namelen, &path, &de); if (retval != NAME_NOT_FOUND) { if (buffer != small_buf) @@ -508,7 +508,7 @@ static int reiserfs_add_entry(struct reiserfs_transaction_handle *th, } gen_number = - find_first_zero_bit((unsigned long *)bit_string, + find_first_zero_bit(bit_string, MAX_GENERATION_NUMBER + 1); if (gen_number > MAX_GENERATION_NUMBER) { /* there is no free generation number */ diff --git a/include/linux/reiserfs_fs.h b/include/linux/reiserfs_fs.h index 7d51149bd79..dad78cecfd2 100644 --- a/include/linux/reiserfs_fs.h +++ b/include/linux/reiserfs_fs.h @@ -1052,7 +1052,7 @@ struct reiserfs_dir_entry { int de_entrylen; int de_namelen; char *de_name; - char *de_gen_number_bit_string; + unsigned long *de_gen_number_bit_string; __u32 de_dir_id; __u32 de_objectid; -- 2.41.1