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authorLukas Czerner <lczerner@redhat.com>2010-10-27 21:30:05 -0400
committerTheodore Ts'o <tytso@mit.edu>2010-10-27 21:30:05 -0400
commit857ac889cce8a486d47874db4d2f9620e7e9e5de (patch)
tree12401895197d819fcbf2335244d91259f4640aa2 /fs/ext4/ialloc.c
parentbfff68738f1cb5c93dab1114634cea02aae9e7ba (diff)
ext4: add interface to advertise ext4 features in sysfs
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>
Diffstat (limited to 'fs/ext4/ialloc.c')
-rw-r--r--fs/ext4/ialloc.c19
1 files changed, 10 insertions, 9 deletions
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index e428f23215c..87d228aae6b 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -1274,6 +1274,16 @@ extern int ext4_init_inode_table(struct super_block *sb, ext4_group_t group,
ext4_itable_unused_count(sb, gdp)),
sbi->s_inodes_per_block);
+ if ((used_blks < 0) || (used_blks > sbi->s_itb_per_group)) {
+ ext4_error(sb, "Something is wrong with group %u\n"
+ "Used itable blocks: %d"
+ "itable unused count: %u\n",
+ group, used_blks,
+ ext4_itable_unused_count(sb, gdp));
+ ret = 1;
+ goto out;
+ }
+
blk = ext4_inode_table(sb, gdp) + used_blks;
num = sbi->s_itb_per_group - used_blks;
@@ -1283,15 +1293,6 @@ extern int ext4_init_inode_table(struct super_block *sb, ext4_group_t group,
if (ret)
goto err_out;
- if (unlikely(num > EXT4_INODES_PER_GROUP(sb))) {
- ext4_error(sb, "Something is wrong with group %u\n"
- "Used itable blocks: %d"
- "Itable blocks per group: %lu\n",
- group, used_blks, sbi->s_itb_per_group);
- ret = 1;
- goto err_out;
- }
-
/*
* Skip zeroout if the inode table is full. But we set the ZEROED
* flag anyway, because obviously, when it is full it does not need