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authorQi Yong <qiyong@fc-cn.com>2014-08-08 14:20:29 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-08 15:57:20 -0700
commit6d6747f85314687f72012ae85cde401db531e130 (patch)
treeda2c90e980961139efe805e820f0fdb1d0a61b57
parent9f7d7a1d0f36bed7f533807146483e8fdfe12a89 (diff)
downloadop-kernel-dev-6d6747f85314687f72012ae85cde401db531e130.zip
op-kernel-dev-6d6747f85314687f72012ae85cde401db531e130.tar.gz
minix zmap block counts calculation fix
The original minix zmap blocks calculation was correct, in the formula of: sbi->s_nzones - sbi->s_firstdatazone + 1 It is sp->s_zones - (sp->s_firstdatazone - 1) in the minix3 source code. But a later commit 016e8d44bc06 ("fs/minix: Verify bitmap block counts before mounting") has changed it unfortunately as: sbi->s_nzones - (sbi->s_firstdatazone + 1) This would show free blocks one block less than the real when the total data blocks are in "full zmap blocks plus one". This patch corrects that zmap blocks calculation and tidy a printk message while at it. Signed-off-by: Qi Yong <qiyong@fc-cn.com> Cc: Josh Boyer <jwboyer@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/minix/bitmap.c2
-rw-r--r--fs/minix/inode.c4
2 files changed, 3 insertions, 3 deletions
diff --git a/fs/minix/bitmap.c b/fs/minix/bitmap.c
index 4bc50da..742942a 100644
--- a/fs/minix/bitmap.c
+++ b/fs/minix/bitmap.c
@@ -96,7 +96,7 @@ int minix_new_block(struct inode * inode)
unsigned long minix_count_free_blocks(struct super_block *sb)
{
struct minix_sb_info *sbi = minix_sb(sb);
- u32 bits = sbi->s_nzones - (sbi->s_firstdatazone + 1);
+ u32 bits = sbi->s_nzones - sbi->s_firstdatazone + 1;
return (count_free(sbi->s_zmap, sb->s_blocksize, bits)
<< sbi->s_log_zone_size);
diff --git a/fs/minix/inode.c b/fs/minix/inode.c
index f007a33..3f57af1 100644
--- a/fs/minix/inode.c
+++ b/fs/minix/inode.c
@@ -267,12 +267,12 @@ static int minix_fill_super(struct super_block *s, void *data, int silent)
block = minix_blocks_needed(sbi->s_ninodes, s->s_blocksize);
if (sbi->s_imap_blocks < block) {
printk("MINIX-fs: file system does not have enough "
- "imap blocks allocated. Refusing to mount\n");
+ "imap blocks allocated. Refusing to mount.\n");
goto out_no_bitmap;
}
block = minix_blocks_needed(
- (sbi->s_nzones - (sbi->s_firstdatazone + 1)),
+ (sbi->s_nzones - sbi->s_firstdatazone + 1),
s->s_blocksize);
if (sbi->s_zmap_blocks < block) {
printk("MINIX-fs: file system does not have enough "
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