https://bugzilla.kernel.org/show_bug.cgi?id=219306 Bug ID: 219306 Summary: ext4_truncate() is being called endlessly, all the time Product: File System Version: 2.5 Hardware: i386 OS: Linux Status: NEW Severity: low Priority: P3 Component: ext4 Assignee: fs_ext4@xxxxxxxxxxxxxxxxxxxx Reporter: linmaxi@xxxxxxxxx Regression: No At file ./linux/fs/ext4/extents.c there is this function: int ext4_ext_truncate(handle_t *handle, struct inode *inode) {...} Which is being called all the time, from the moment the machine is booted. Steps to reproduce: To witness it, just inject a simple printk at the beggining of the function and checkout dmesg. After some lookup, it turns out the inode that is being passed to the function is of the file: /var/log/journal/7c8e96117d45417e980f5fec3775d67f/system.journal. The calling function is ext4_setattr(...) in the file ./linux/fs/ext4/inode.c. At that function we have the following code: /* * Call ext4_truncate() even if i_size didn't change to * truncate possible preallocated blocks. */ if (attr->ia_size <= oldsize) { rc = ext4_truncate(inode); if (rc) error = rc; } Looks like this function is being called on system.journal file but without actually having it's size changed. Although the comment appears to justify calling the function even when the size is unchanged, it is probably unintended that the function will be ran at such a high frequency without doing anything. I'd like to ask for thoughts on this, and I'd be glad to fix it myself if possible. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
