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udf: Clarify meaning of f_files in udf_statfs

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UDF does not have separate preallocated table of inodes. So similarly to
XFS we pretend that every free block is also a free inode in statfs(2)
output. Clarify this in a comment.

Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Jan Kara
2020-01-17 12:36:38 +01:00
parent 15fb05fd28
commit 356557be86
1 changed files with 4 additions and 0 deletions
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4
fs/udf/super.c
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@@ -2402,6 +2402,10 @@ static int udf_statfs(struct dentry *dentry, struct kstatfs *buf)
buf->f_blocks = sbi->s_partmaps[sbi->s_partition].s_partition_len; buf->f_blocks = sbi->s_partmaps[sbi->s_partition].s_partition_len;
buf->f_bfree = udf_count_free(sb); buf->f_bfree = udf_count_free(sb);
buf->f_bavail = buf->f_bfree; buf->f_bavail = buf->f_bfree;
/*
* Let's pretend each free block is also a free 'inode' since UDF does
* not have separate preallocated table of inodes.
*/
buf->f_files = (lvidiu != NULL ? (le32_to_cpu(lvidiu->numFiles) + buf->f_files = (lvidiu != NULL ? (le32_to_cpu(lvidiu->numFiles) +
le32_to_cpu(lvidiu->numDirs)) : 0) le32_to_cpu(lvidiu->numDirs)) : 0)
+ buf->f_bfree; + buf->f_bfree;