GFS2: Increase i_writecount during gfs2_setattr_size
This patch calls get_write_access in a few functions. This
merely increases inode->i_writecount for the duration of the function.
That will ensure that any file closes won't delete the inode's
multi-block reservation while the function is running.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index acd1676..ad0dc38 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -402,16 +402,20 @@
/* Update file times before taking page lock */
file_update_time(vma->vm_file);
+ ret = get_write_access(inode);
+ if (ret)
+ goto out;
+
ret = gfs2_rs_alloc(ip);
if (ret)
- return ret;
+ goto out_write_access;
gfs2_size_hint(vma->vm_file, pos, PAGE_CACHE_SIZE);
gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
ret = gfs2_glock_nq(&gh);
if (ret)
- goto out;
+ goto out_uninit;
set_bit(GLF_DIRTY, &ip->i_gl->gl_flags);
set_bit(GIF_SW_PAGED, &ip->i_flags);
@@ -480,12 +484,15 @@
gfs2_quota_unlock(ip);
out_unlock:
gfs2_glock_dq(&gh);
-out:
+out_uninit:
gfs2_holder_uninit(&gh);
if (ret == 0) {
set_page_dirty(page);
wait_for_stable_page(page);
}
+out_write_access:
+ put_write_access(inode);
+out:
sb_end_pagefault(inode->i_sb);
return block_page_mkwrite_return(ret);
}
@@ -594,10 +601,10 @@
kfree(file->private_data);
file->private_data = NULL;
- if ((file->f_mode & FMODE_WRITE) &&
- (atomic_read(&inode->i_writecount) == 1))
- gfs2_rs_delete(ip);
+ if (!(file->f_mode & FMODE_WRITE))
+ return 0;
+ gfs2_rs_delete(ip);
return 0;
}
