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ext4: add interface to advertise ext4 features in sysfs

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User-space should have the opportunity to check what features doest ext4
support in each particular copy. This adds easy interface by creating new
"features" directory in sys/fs/ext4/. In that directory files
advertising feature names can be created.

Add lazy_itable_init to the feature list.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Lukas Czerner
2010-10-27 21:30:05 -04:00
committed by Theodore Ts'o
parent bfff68738f
commit 857ac889cc
3 changed files with 65 additions and 11 deletions
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5
fs/ext4/ext4.h
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@@ -1574,6 +1574,11 @@ struct ext4_li_request {
unsigned long lr_timeout;
};
struct ext4_features {
struct kobject f_kobj;
struct completion f_kobj_unregister;
};
/*
* Function prototypes
*/