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udf: Move setting of i_lenExtents into udf_do_extend_file()

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When expanding file for a write into a hole, we were not updating total
length of inode's extents properly. Move the update of i_lenExtents into
udf_do_extend_file() so that both expanding of file by truncate and
expanding of file by writing beyond EOF properly update the length of
extents. As a bonus, we also correctly update the length of extents when
only part of extents can be written.

Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara 2022-12-21 12:18:23 +01:00
parent 0aba4860b0
commit e57191a8d4
1 changed files with 4 additions and 1 deletions
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5
fs/udf/inode.c
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@ -419,6 +419,7 @@ static int udf_do_extend_file(struct inode *inode,
~(sb->s_blocksize - 1);
}
add = 0;
/* Can we merge with the previous extent? */
if ((last_ext->extLength & UDF_EXTENT_FLAG_MASK) ==
EXT_NOT_RECORDED_NOT_ALLOCATED) {
@ -451,6 +452,7 @@ static int udf_do_extend_file(struct inode *inode,
if (new_block_bytes)
udf_next_aext(inode, last_pos, &tmploc, &tmplen, 0);
}
iinfo->i_lenExtents += add;
/* Managed to do everything necessary? */
if (!new_block_bytes)
@ -469,6 +471,7 @@ static int udf_do_extend_file(struct inode *inode,
last_ext->extLength, 1);
if (err)
goto out_err;
iinfo->i_lenExtents += add;
count++;
}
if (new_block_bytes) {
@ -478,6 +481,7 @@ static int udf_do_extend_file(struct inode *inode,
last_ext->extLength, 1);
if (err)
goto out_err;
iinfo->i_lenExtents += new_block_bytes;
count++;
}
@ -585,7 +589,6 @@ static int udf_extend_file(struct inode *inode, loff_t newsize)
if (err < 0)
goto out;
err = 0;
iinfo->i_lenExtents = newsize;
out:
brelse(epos.bh);
return err;