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Date: Wed, 26 Dec 2012 11:10:21 +0900
From: Namjae Jeon <linkinjeon@...il.com>
To: jaegeuk.kim@...sung.com
Cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-f2fs-devel@...ts.sourceforge.net,
Namjae Jeon <namjae.jeon@...sung.com>,
Amit Sahrawat <a.sahrawat@...sung.com>
Subject: Re: [PATCH 1/5] f2fs: Introduce some information prints in the mount path
2012/12/26, Jaegeuk Kim <jaegeuk.kim@...sung.com>:
> Hi,
Hi Jaegeuk.
>
> Could you make them follow the file system convention?
> Something like "F2FS: blah blah~".
Yes, I agree.
>
> Otherwise, how about adding a debugging function to express the prefix?
Okay, I will send you the patches included your suggestion.
Thanks.
> Thanks,
>
> 2012-12-22 (토), 12:08 +0900, Namjae Jeon:
>> From: Namjae Jeon <namjae.jeon@...sung.com>
>>
>> Added few informative prints in the mount path, to convey proper error
>> in case of mount failure.
>>
>> Signed-off-by: Namjae Jeon <namjae.jeon@...sung.com>
>> Signed-off-by: Amit Sahrawat <a.sahrawat@...sung.com>
>> ---
>> fs/f2fs/super.c | 46 ++++++++++++++++++++++++++++++++++++----------
>> 1 file changed, 36 insertions(+), 10 deletions(-)
>>
>> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
>> index cf0ffb8..86f8549 100644
>> --- a/fs/f2fs/super.c
>> +++ b/fs/f2fs/super.c
>> @@ -342,19 +342,29 @@ static int sanity_check_raw_super(struct
>> f2fs_super_block *raw_super)
>> {
>> unsigned int blocksize;
>>
>> - if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic))
>> + if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic)) {
>> + pr_info("Magic Mismatch, valid(0x%x) - read(0x%x)\n",
>> + F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic));
>> return 1;
>> + }
>>
>> /* Currently, support only 4KB block size */
>> blocksize = 1 << le32_to_cpu(raw_super->log_blocksize);
>> - if (blocksize != PAGE_CACHE_SIZE)
>> + if (blocksize != PAGE_CACHE_SIZE) {
>> + pr_info("Not valid blocksize (%u), supports only 4KB\n",
>> + blocksize);
>> return 1;
>> + }
>> if (le32_to_cpu(raw_super->log_sectorsize) !=
>> - F2FS_LOG_SECTOR_SIZE)
>> + F2FS_LOG_SECTOR_SIZE) {
>> + pr_info("Not valid log sectorsize\n");
>> return 1;
>> + }
>> if (le32_to_cpu(raw_super->log_sectors_per_block) !=
>> - F2FS_LOG_SECTORS_PER_BLOCK)
>> + F2FS_LOG_SECTORS_PER_BLOCK) {
>> + pr_info("Not valid log sectors per block\n");
>> return 1;
>> + }
>> return 0;
>> }
>>
>> @@ -415,13 +425,16 @@ static int f2fs_fill_super(struct super_block *sb,
>> void *data, int silent)
>> return -ENOMEM;
>>
>> /* set a temporary block size */
>> - if (!sb_set_blocksize(sb, F2FS_BLKSIZE))
>> + if (!sb_set_blocksize(sb, F2FS_BLKSIZE)) {
>> + pr_err("unable to set blocksize\n");
>> goto free_sbi;
>> + }
>>
>> /* read f2fs raw super block */
>> raw_super_buf = sb_bread(sb, 0);
>> if (!raw_super_buf) {
>> err = -EIO;
>> + pr_err("unable to read superblock\n");
>> goto free_sbi;
>> }
>> raw_super = (struct f2fs_super_block *)
>> @@ -443,8 +456,10 @@ static int f2fs_fill_super(struct super_block *sb,
>> void *data, int silent)
>> goto free_sb_buf;
>>
>> /* sanity checking of raw super */
>> - if (sanity_check_raw_super(raw_super))
>> + if (sanity_check_raw_super(raw_super)) {
>> + pr_err("Not a valid F2FS filesystem\n");
>> goto free_sb_buf;
>> + }
>>
>> sb->s_maxbytes = max_file_size(le32_to_cpu(raw_super->log_blocksize));
>> sb->s_max_links = F2FS_LINK_MAX;
>> @@ -478,18 +493,23 @@ static int f2fs_fill_super(struct super_block *sb,
>> void *data, int silent)
>> /* get an inode for meta space */
>> sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi));
>> if (IS_ERR(sbi->meta_inode)) {
>> + pr_err("Failed to read F2FS meta data inode\n");
>> err = PTR_ERR(sbi->meta_inode);
>> goto free_sb_buf;
>> }
>>
>> err = get_valid_checkpoint(sbi);
>> - if (err)
>> + if (err) {
>> + pr_err("Failed to get valid F2FS checkpoint\n");
>> goto free_meta_inode;
>> + }
>>
>> /* sanity checking of checkpoint */
>> err = -EINVAL;
>> - if (sanity_check_ckpt(raw_super, sbi->ckpt))
>> + if (sanity_check_ckpt(raw_super, sbi->ckpt)) {
>> + pr_err("Not a valid F2FS checkpoint\n");
>> goto free_cp;
>> + }
>>
>> sbi->total_valid_node_count =
>> le32_to_cpu(sbi->ckpt->valid_node_count);
>> @@ -511,17 +531,22 @@ static int f2fs_fill_super(struct super_block *sb,
>> void *data, int silent)
>>
>> /* setup f2fs internal modules */
>> err = build_segment_manager(sbi);
>> - if (err)
>> + if (err) {
>> + pr_err("Failed to initialize F2FS segment manager\n");
>> goto free_sm;
>> + }
>> err = build_node_manager(sbi);
>> - if (err)
>> + if (err) {
>> + pr_err("Failed to initialize F2FS node manager\n");
>> goto free_nm;
>> + }
>>
>> build_gc_manager(sbi);
>>
>> /* get an inode for node space */
>> sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi));
>> if (IS_ERR(sbi->node_inode)) {
>> + pr_err("Failed to read node inode\n");
>> err = PTR_ERR(sbi->node_inode);
>> goto free_nm;
>> }
>> @@ -534,6 +559,7 @@ static int f2fs_fill_super(struct super_block *sb,
>> void *data, int silent)
>> /* read root inode and dentry */
>> root = f2fs_iget(sb, F2FS_ROOT_INO(sbi));
>> if (IS_ERR(root)) {
>> + pr_err("Failed to read root inode\n");
>> err = PTR_ERR(root);
>> goto free_node_inode;
>> }
>
> --
> Jaegeuk Kim
> Samsung
>
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