The patch titled
Fix spurious warning in i_size_write
has been added to the -mm tree. Its filename is
mm-only-i_size_write-debugging-fix.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: Fix spurious warning in i_size_write
From: Jiri Kosina <jikos@xxxxxxxx>
i_size_write() can be legitimately called without inode->i_mutex locked.
This is OK in cases when the inode has not been yet linked into the parent
dentry, so no race condition on i_size can occur.
Signed-off-by: Jiri Kosina <jikos@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
fs/inode.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletion(-)
diff -puN fs/inode.c~mm-only-i_size_write-debugging-fix fs/inode.c
--- a/fs/inode.c~mm-only-i_size_write-debugging-fix
+++ a/fs/inode.c
@@ -1386,7 +1386,9 @@ void __init inode_init(unsigned long mem
void i_size_write(struct inode *inode, loff_t i_size)
{
- WARN_ON_ONCE(!mutex_is_locked(&inode->i_mutex));
+ /* calling us without i_mutex is OK when not connected to dentry yet */
+ if (!list_empty(&inode->i_dentry))
+ WARN_ON_ONCE(!mutex_is_locked(&inode->i_mutex));
#if BITS_PER_LONG==32 && defined(CONFIG_SMP)
write_seqcount_begin(&inode->i_size_seqcount);
inode->i_size = i_size;
_
Patches currently in -mm which might be from jikos@xxxxxxxx are
origin.patch
mm-only-i_size_write-debugging.patch
mm-only-i_size_write-debugging-fix.patch
-
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
