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authorDarrick J. Wong <darrick.wong@oracle.com>2015-10-15 10:33:21 -0400
committerTheodore Ts'o <tytso@mit.edu>2015-10-15 10:33:21 -0400
commit9172796bc3754af73b90cbd70586812ddbc1e0ca (patch)
tree8eecb1c9e75af00f713173b0780d6edc1a100de2 /fs/Makefile
parent8595798ca34d186d39abcb277591e541776c0ef5 (diff)
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ext4: promote ext4 over ext2 in the default probe order
Prevent clean ext3 filesystems from mounting by default with the ext2 driver (with no journal!) by putting ext4 ahead of ext2 in the default probe order. This will have the effect of mounting ext2 filesystems with ext4.ko by default, which is a safer failure than hoping the user notices that their journalled ext3 is now running without a journal! Users who require ext2.ko for ext2 can either disable ext4.ko or explicitly request ext2 via "mount -t ext2" or "rootfstype=ext2". Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/Makefile')
-rw-r--r--fs/Makefile7
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/Makefile b/fs/Makefile
index f79cf4043e60..79f522575cba 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -63,10 +63,11 @@ obj-$(CONFIG_DLM) += dlm/
# Do not add any filesystems before this line
obj-$(CONFIG_FSCACHE) += fscache/
obj-$(CONFIG_REISERFS_FS) += reiserfs/
-obj-$(CONFIG_EXT2_FS) += ext2/
-# We place ext4 after ext2 so plain ext2 root fs's are mounted using ext2
-# unless explicitly requested by rootfstype
obj-$(CONFIG_EXT4_FS) += ext4/
+# We place ext4 before ext2 so that clean ext3 root fs's do NOT mount using the
+# ext2 driver, which doesn't know about journalling! Explicitly request ext2
+# by giving the rootfstype= parameter.
+obj-$(CONFIG_EXT2_FS) += ext2/
obj-$(CONFIG_JBD2) += jbd2/
obj-$(CONFIG_CRAMFS) += cramfs/
obj-$(CONFIG_SQUASHFS) += squashfs/