diff options
author | Jan Kara <jack@suse.cz> | 2010-01-08 16:46:29 +0100 |
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committer | Jan Kara <jack@suse.cz> | 2010-03-09 17:15:17 +0100 |
commit | aae917cd188f397e9223001d9f6c0adfb339fd64 (patch) | |
tree | 7185f5f0b984145c1511ae657487e68504f185a7 /fs/udf/inode.c | |
parent | 57d54889cd00db2752994b389ba714138652e60c (diff) | |
download | op-kernel-dev-aae917cd188f397e9223001d9f6c0adfb339fd64.zip op-kernel-dev-aae917cd188f397e9223001d9f6c0adfb339fd64.tar.gz |
udf: Fix unalloc space handling in udf_update_inode
Writing of inode holding unallocated space info was broken because we first
cleared the buffer and after that checked whether it contains a tag meaning the
block holds unallocated space information. Fix the problem by checking
appropriate in memory flag instead.
Also cleanup the function a bit along the way - most importantly lock buffer
when modifying its contents, check for buffer_write_io_error instead of
!buffer_uptodate, etc..
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/udf/inode.c')
-rw-r--r-- | fs/udf/inode.c | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/fs/udf/inode.c b/fs/udf/inode.c index b57ab04..a792a88 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -1412,16 +1412,16 @@ static int udf_update_inode(struct inode *inode, int do_sync) udf_get_lb_pblock(inode->i_sb, &iinfo->i_location, 0)); if (!bh) { - udf_debug("bread failure\n"); - return -EIO; + udf_debug("getblk failure\n"); + return -ENOMEM; } - memset(bh->b_data, 0x00, inode->i_sb->s_blocksize); - + lock_buffer(bh); + memset(bh->b_data, 0, inode->i_sb->s_blocksize); fe = (struct fileEntry *)bh->b_data; efe = (struct extendedFileEntry *)bh->b_data; - if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_USE)) { + if (iinfo->i_use) { struct unallocSpaceEntry *use = (struct unallocSpaceEntry *)bh->b_data; @@ -1429,20 +1429,18 @@ static int udf_update_inode(struct inode *inode, int do_sync) memcpy(bh->b_data + sizeof(struct unallocSpaceEntry), iinfo->i_ext.i_data, inode->i_sb->s_blocksize - sizeof(struct unallocSpaceEntry)); + use->descTag.tagIdent = cpu_to_le16(TAG_IDENT_USE); + use->descTag.tagLocation = + cpu_to_le32(iinfo->i_location.logicalBlockNum); crclen = sizeof(struct unallocSpaceEntry) + iinfo->i_lenAlloc - sizeof(struct tag); - use->descTag.tagLocation = cpu_to_le32( - iinfo->i_location. - logicalBlockNum); use->descTag.descCRCLength = cpu_to_le16(crclen); use->descTag.descCRC = cpu_to_le16(crc_itu_t(0, (char *)use + sizeof(struct tag), crclen)); use->descTag.tagChecksum = udf_tag_checksum(&use->descTag); - mark_buffer_dirty(bh); - brelse(bh); - return err; + goto out; } if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_UID_FORGET)) @@ -1597,18 +1595,20 @@ static int udf_update_inode(struct inode *inode, int do_sync) fe->descTag.tagSerialNum = cpu_to_le16(sbi->s_serial_number); fe->descTag.tagLocation = cpu_to_le32( iinfo->i_location.logicalBlockNum); - crclen += iinfo->i_lenEAttr + iinfo->i_lenAlloc - - sizeof(struct tag); + crclen += iinfo->i_lenEAttr + iinfo->i_lenAlloc - sizeof(struct tag); fe->descTag.descCRCLength = cpu_to_le16(crclen); fe->descTag.descCRC = cpu_to_le16(crc_itu_t(0, (char *)fe + sizeof(struct tag), crclen)); fe->descTag.tagChecksum = udf_tag_checksum(&fe->descTag); +out: + unlock_buffer(bh); + /* write the data blocks */ mark_buffer_dirty(bh); if (do_sync) { sync_dirty_buffer(bh); - if (buffer_req(bh) && !buffer_uptodate(bh)) { + if (buffer_write_io_error(bh)) { printk(KERN_WARNING "IO error syncing udf inode " "[%s:%08lx]\n", inode->i_sb->s_id, inode->i_ino); |