diff options
| author | Namjae Jeon <namjae.jeon@samsung.com> | 2012-10-10 00:09:12 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-17 08:50:53 -0800 |
| commit | 4faf067ae71be3d652e09c3119ce8125498cdf64 (patch) | |
| tree | cd327d24f9eecf6c2a1bc876ed205f26b9684ac0 /fs | |
| parent | 8d00c77065819b747c6fc0b56234afea72f17332 (diff) | |
udf: don't increment lenExtents while writing to a hole
commit fb719c59bdb4fca86ee1fd1f42ab3735ca12b6b2 upstream.
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: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Ashish Sangwan <a.sangwan@samsung.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Shuah Khan <shuah.khan@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/udf/inode.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/udf/inode.c b/fs/udf/inode.c index ad68793e46b..aa70035fb40 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -574,6 +574,7 @@ 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; @@ -653,7 +654,7 @@ 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]; @@ -696,6 +697,7 @@ 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, @@ -743,7 +745,8 @@ static sector_t inode_getblk(struct inode *inode, sector_t block, *err = -ENOSPC; return 0; } - iinfo->i_lenExtents += inode->i_sb->s_blocksize; + if (isBeyondEOF) + iinfo->i_lenExtents += inode->i_sb->s_blocksize; } /* if the extent the requsted block is located in contains multiple |