[PATCH 3.2 184/221] jfs: fix readdir regression

From: Ben Hutchings
Date: Mon May 04 2015 - 22:13:53 EST


3.2.69-rc1 review patch. If anyone has any objections, please let me know.

------------------

From: Dave Kleikamp <dave.kleikamp@xxxxxxxxxx>

Upstream commit 44512449, "jfs: fix readdir cookie incompatibility
with NFSv4", was backported incorrectly into the stable trees which
used the filldir callback (rather than dir_emit). The position is
being incorrectly passed to filldir for the . and .. entries.

The still-maintained stable trees that need to be fixed are 3.2.y,
3.4.y and 3.10.y.

https://bugzilla.kernel.org/show_bug.cgi?id=94741

Signed-off-by: Dave Kleikamp <dave.kleikamp@xxxxxxxxxx>
Cc: jfs-discussion@xxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
fs/jfs/jfs_dtree.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/jfs/jfs_dtree.c b/fs/jfs/jfs_dtree.c
index 9f7c758..f6f32fa 100644
--- a/fs/jfs/jfs_dtree.c
+++ b/fs/jfs/jfs_dtree.c
@@ -3103,7 +3103,7 @@ int jfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
* self "."
*/
filp->f_pos = 1;
- if (filldir(dirent, ".", 1, 0, ip->i_ino,
+ if (filldir(dirent, ".", 1, 1, ip->i_ino,
DT_DIR))
return 0;
}
@@ -3111,7 +3111,7 @@ int jfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
* parent ".."
*/
filp->f_pos = 2;
- if (filldir(dirent, "..", 2, 1, PARENT(ip), DT_DIR))
+ if (filldir(dirent, "..", 2, 2, PARENT(ip), DT_DIR))
return 0;

/*

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