Revert "exofs: Set i_mapping->backing_dev_info anyway"

commit 0b0abeaf3d30cec03ac6497fe978b8f7edecc5ae upstream.

This reverts commit 115e19c53501edc11f730191f7f047736815ae3d.

Apparently setting inode->bdi to one's own sb->s_bdi stops VFS from
sending *read-aheads*.  This problem was bisected to this commit.  A
revert fixes it.  I'll investigate farther why is this happening for the
next Kernel, but for now a revert.

I'm sending to stable@kernel.org as well, since it exists also in
2.6.37.  2.6.36 is good and does not have this patch.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/fs/exofs/inode.c b/fs/exofs/inode.c
index 42685424817b5d846cbf411bcff815f62f023fa4..a7555238c41aaf942237b2aafb780c8605244812 100644 (file)
--- a/fs/exofs/inode.c
+++ b/fs/exofs/inode.c
@@ -1030,7 +1030,6 @@ struct inode *exofs_iget(struct super_block *sb, unsigned long ino)
                memcpy(oi->i_data, fcb.i_data, sizeof(fcb.i_data));
        }
 
-       inode->i_mapping->backing_dev_info = sb->s_bdi;
        if (S_ISREG(inode->i_mode)) {
                inode->i_op = &exofs_file_inode_operations;
                inode->i_fop = &exofs_file_operations;
@@ -1131,7 +1130,6 @@ struct inode *exofs_new_inode(struct inode *dir, int mode)
 
        sbi = sb->s_fs_info;
 
-       inode->i_mapping->backing_dev_info = sb->s_bdi;
        sb->s_dirt = 1;
        inode_init_owner(inode, dir, mode);
        inode->i_ino = sbi->s_nextid++;