Hello Linus,
could you please pull from
git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs.git quota_scaling
The branch contains changes to make quota subsystem more scalable.
Reportedly it improves number of files created per second on ext4
filesystem on fast storage about twice.
Top of the tree is c9ea9df3032e. The full shortlog is:
Jan Kara (28):
quota: Convert dqio_mutex to rwsem
quota: Do more fine-grained locking in dquot_acquire()
quota: Acquire dqio_sem for reading in dquot_get_next_id()
quota: Acquire dqio_sem for reading in vfs_load_quota_inode()
quota: Protect dquot writeout with dq_lock
quota: Push dqio_sem down to ->read_dqblk()
quota: Remove locking for reading from the old quota format
quota: Push dqio_sem down to ->write_dqblk()
quota: Do not acquire dqio_sem for dquot overwrites in v2 format
quota: Remove locking for writing to the old quota format
quota: Push dqio_sem down to ->release_dqblk()
quota: Push dqio_sem down to ->get_next_id()
quota: Push dqio_sem down to ->write_file_info()
quota: Push dqio_sem down to ->read_file_info()
quota: Fix error codes in v2_read_file_info()
quota: Propagate ->quota_read errors from v2_read_file_info()
quota: Fix possible corruption of dqi_flags
quota: Do not dirty bad dquots
quota: Move locking into clear_dquot_dirty()
quota: Remove dq_wait_unused from dquot
quota: Allow disabling tracking of dirty dquots in a list
ext4: Disable dirty list tracking of dquots when journalling quotas
quota: Inline functions into their callsites
quota: Inline inode_{incr,decr}_space() into callsites
quota: Inline dquot_[re]claim_reserved_space() into callsite
fs: Provide __inode_get_bytes()
quota: Reduce contention on dq_data_lock
quota: Add lock annotations to struct members
The diffstat is
fs/ext4/super.c | 26 +--
fs/ocfs2/quota_global.c | 36 ++--
fs/ocfs2/quota_local.c | 17 +-
fs/quota/dquot.c | 504 ++++++++++++++++++++++++-----------------------
fs/quota/quota_tree.c | 10 +-
fs/quota/quota_v1.c | 11 +-
fs/quota/quota_v2.c | 91 +++++++--
fs/stat.c | 2 +-
fs/super.c | 2 +-
include/linux/fs.h | 4 +
include/linux/quota.h | 31 +--
include/linux/quotaops.h | 5 -
12 files changed, 411 insertions(+), 328 deletions(-)
Thanks
Honza
--
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR
