Commit 6ad53f0f authored by Jan Kara's avatar Jan Kara
Browse files

udf: Do not bother looking for prealloc extents if i_lenExtents matches i_size 



If rounded block-rounded i_lenExtents matches block rounded i_size,
there are no preallocation extents. Do not bother walking extent linked
list.

CC: stable@vger.kernel.org
Signed-off-by: default avatarJan Kara <jack@suse.cz>
parent cfe4c1b2

fs/udf/truncate.c

+2 −1
Original line number Diff line number Diff line
@@ -127,9 +127,10 @@ void udf_discard_prealloc(struct inode *inode) 
	uint64_t lbcount = 0;

	int8_t etype = -1, netype;

	struct udf_inode_info *iinfo = UDF_I(inode);

	int bsize = 1 << inode->i_blkbits;



	if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB ||

	    inode->i_size == iinfo->i_lenExtents)

	    ALIGN(inode->i_size, bsize) == ALIGN(iinfo->i_lenExtents, bsize))

		return;



	epos.block = iinfo->i_location;