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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 <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
This commit is contained in:
Aneesh Kumar K.V 2008-01-28 23:58:27 -05:00 committed by Theodore Ts'o
parent cb45bbe44b
commit ce40733ce9
1 changed files with 5 additions and 10 deletions
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15
fs/ext4/super.c
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@ -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);