ext4: add largedir feature

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This INCOMPAT_LARGEDIR feature allows larger directories to be created
in ldiskfs, both with directory sizes over 2GB and and a maximum htree
depth of 3 instead of the current limit of 2. These features are needed
in order to exceed the current limit of approximately 10M entries in a
single directory.

This patch was originally written by Yang Sheng to support the Lustre server.

[ Bumped the credits needed to update an indexed directory -- tytso ]

Signed-off-by: Liang Zhen <liang.zhen@intel.com>
Signed-off-by: Yang Sheng <yang.sheng@intel.com>
Signed-off-by: Artem Blagodarenko <artem.blagodarenko@seagate.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>

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Artem Blagodarenko 2017-06-21 21:09:57 -04:00 • committed by Theodore Ts'o

parent 67a7d5f561

commit e08ac99fa2

4 changed files with 113 additions and 47 deletions

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23

fs/ext4/ext4.h

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9

fs/ext4/ext4_jbd2.h

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4

fs/ext4/inode.c

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124

fs/ext4/namei.c

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