From ce40733ce93de402ed629762f0e912d9af187cef Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Mon, 28 Jan 2008 23:58:27 -0500 Subject: [PATCH] ext4: Check for return value from sb_set_blocksize sb_set_blocksize validates whether the specfied block size can be used by the file system. Make sure we fail mounting the file system if the blocksize specfied cannot be used. Signed-off-by: Aneesh Kumar K.V Signed-off-by: Mingming Cao --- fs/ext4/super.c | 15 +++++---------- 1 file changed, 5 insertions(+), 10 deletions(-) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 00560cfa519d..055a0cd0168e 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1812,7 +1812,6 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) unsigned long def_mount_opts; struct inode *root; int blocksize; - int hblock; int db_count; int i; int needs_recovery; @@ -1969,20 +1968,16 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent) goto failed_mount; } - hblock = bdev_hardsect_size(sb->s_bdev); if (sb->s_blocksize != blocksize) { - /* - * Make sure the blocksize for the filesystem is larger - * than the hardware sectorsize for the machine. - */ - if (blocksize < hblock) { - printk(KERN_ERR "EXT4-fs: blocksize %d too small for " - "device blocksize %d.\n", blocksize, hblock); + + /* Validate the filesystem blocksize */ + if (!sb_set_blocksize(sb, blocksize)) { + printk(KERN_ERR "EXT4-fs: bad block size %d.\n", + blocksize); goto failed_mount; } brelse (bh); - sb_set_blocksize(sb, blocksize); logical_sb_block = sb_block * EXT4_MIN_BLOCK_SIZE; offset = do_div(logical_sb_block, blocksize); bh = sb_bread(sb, logical_sb_block);