From 88072faf9a32c92f37c15065496bb6eb309aebe3 Mon Sep 17 00:00:00 2001 From: Ryusuke Konishi Date: Sun, 5 Apr 2009 15:03:16 +0900 Subject: nilfs2: fix wrong accounting and duplicate brelse in nilfs_sufile_set_error The nilfs_sufile_set_error() function wrongly adjusts the number of dirty segments instead of the number of clean segments. In addition, the function calls brelse() twice for the same buffer head. This fixes these bugs. Signed-off-by: Ryusuke Konishi --- fs/nilfs2/sufile.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) (limited to 'fs') diff --git a/fs/nilfs2/sufile.c b/fs/nilfs2/sufile.c index 1ef2b4d9d794..8b2f93ca1e16 100644 --- a/fs/nilfs2/sufile.c +++ b/fs/nilfs2/sufile.c @@ -523,7 +523,7 @@ int nilfs_sufile_set_error(struct inode *sufile, __u64 segnum) struct nilfs_segment_usage *su; struct nilfs_sufile_header *header; void *kaddr; - int ret; + int suclean, ret; if (unlikely(segnum >= nilfs_sufile_get_nsegments(sufile))) { printk(KERN_WARNING "%s: invalid segment number: %llu\n", @@ -546,16 +546,19 @@ int nilfs_sufile_set_error(struct inode *sufile, __u64 segnum) brelse(su_bh); goto out_header; } + suclean = nilfs_segment_usage_clean(su); nilfs_segment_usage_set_error(su); kunmap_atomic(kaddr, KM_USER0); - brelse(su_bh); - kaddr = kmap_atomic(header_bh->b_page, KM_USER0); - header = nilfs_sufile_block_get_header(sufile, header_bh, kaddr); - le64_add_cpu(&header->sh_ndirtysegs, -1); - kunmap_atomic(kaddr, KM_USER0); - nilfs_mdt_mark_buffer_dirty(header_bh); + if (suclean) { + kaddr = kmap_atomic(header_bh->b_page, KM_USER0); + header = nilfs_sufile_block_get_header(sufile, header_bh, + kaddr); + le64_add_cpu(&header->sh_ncleansegs, -1); + kunmap_atomic(kaddr, KM_USER0); + nilfs_mdt_mark_buffer_dirty(header_bh); + } nilfs_mdt_mark_buffer_dirty(su_bh); nilfs_mdt_mark_dirty(sufile); brelse(su_bh); -- cgit v1.2.3