tjh.dev / kernel
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ext4: fix mount failure with quota configured as module

When CONFIG_QFMT_V2 is configured as a module, the test in
ext4_feature_set_ok() fails and so mount of filesystems with quota or
project features fails. Fix the test to use IS_ENABLED macro which
works properly even for modules.

Link: https://lore.kernel.org/r/20200221100835.9332-1-jack@suse.cz
Fixes: d65d87a07476 ("ext4: improve explanation of a mount failure caused by a misconfigured kernel")
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org

authored by Jan Kara and committed by Theodore Ts'o 9db176bc 8eedabfd

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unified split
Changed files
+1 -1
fs
ext4
super.c
+1 -1
fs/ext4/super.c
··· 3034 3034 return 0; 3035 3035 } 3036 3036 3037 - #if !defined(CONFIG_QUOTA) || !defined(CONFIG_QFMT_V2) 3037 + #if !IS_ENABLED(CONFIG_QUOTA) || !IS_ENABLED(CONFIG_QFMT_V2) 3038 3038 if (!readonly && (ext4_has_feature_quota(sb) || 3039 3039 ext4_has_feature_project(sb))) { 3040 3040 ext4_msg(sb, KERN_ERR,