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Commit fb719c59 authored by Namjae Jeon's avatar Namjae Jeon Committed by Jan Kara
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udf: don't increment lenExtents while writing to a hole 



Incrementing lenExtents even while writing to a hole is bad
for performance as calls to udf_discard_prealloc and
udf_truncate_tail_extent would not return from start if
isize != lenExtents

Signed-off-by: default avatarNamjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: default avatarAshish Sangwan <a.sangwan@samsung.com>
Signed-off-by: default avatarJan Kara <jack@suse.cz>
parent 2fb7d99d

fs/udf/inode.c

+5 −2
Original line number Diff line number Diff line
@@ -601,6 +601,7 @@ static sector_t inode_getblk(struct inode *inode, sector_t block, 
	struct udf_inode_info *iinfo = UDF_I(inode);

	int goal = 0, pgoal = iinfo->i_location.logicalBlockNum;

	int lastblock = 0;

	bool isBeyondEOF;



	*err = 0;

	*new = 0;
@@ -680,7 +681,7 @@ static sector_t inode_getblk(struct inode *inode, sector_t block, 
	/* Are we beyond EOF? */

	if (etype == -1) {

		int ret;



		isBeyondEOF = 1;

		if (count) {

			if (c)

				laarr[0] = laarr[1];
@@ -723,6 +724,7 @@ static sector_t inode_getblk(struct inode *inode, sector_t block, 
		endnum = c + 1;

		lastblock = 1;

	} else {

		isBeyondEOF = 0;

		endnum = startnum = ((count > 2) ? 2 : count);



		/* if the current extent is in position 0,
@@ -770,6 +772,7 @@ static sector_t inode_getblk(struct inode *inode, sector_t block, 
			*err = -ENOSPC;

			return 0;

		}

		if (isBeyondEOF)

			iinfo->i_lenExtents += inode->i_sb->s_blocksize;

	}