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2017-02-17NFSD: Get response size before operation for all RPCsKinglong Mee
NFSD usess PAGE_SIZE as the reply size estimate for RPCs which don't support op_rsize_bop(), A PAGE_SIZE (4096) is larger than many real response sizes, eg, access (op_encode_hdr_size + 2), seek (op_encode_hdr_size + 3). This patch just adds op_rsize_bop() for all RPCs getting response size. An overestimate is generally safe but the tighter estimates are probably better. Signed-off-by: Kinglong Mee <kinglongmee@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2017-02-17nfsd/callback: Drop a useless data copy when comparing sessionidKinglong Mee
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2017-02-17nfsd/callback: skip the callback tagKinglong Mee
The callback tag is NULL, and hdr->nops is unused too right now, but. But if we were to ever test with a nonzero callback tag, nops will get a bad value. Signed-off-by: Kinglong Mee <kinglongmee@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2017-02-17nfsd/callback: Cleanup callback cred on shutdownKinglong Mee
The rpccred gotten from rpc_lookup_machine_cred() should be put when state is shutdown. Signed-off-by: Kinglong Mee <kinglongmee@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2017-02-17nfsd/idmap: return nfserr_inval for 0-length namesKinglong Mee
Tigran Mkrtchyan's new pynfs testcases for zero length principals fail: SATT16 st_setattr.testEmptyPrincipal : FAILURE Setting empty owner should return NFS4ERR_INVAL, instead got NFS4ERR_BADOWNER SATT17 st_setattr.testEmptyGroupPrincipal : FAILURE Setting empty owner_group should return NFS4ERR_INVAL, instead got NFS4ERR_BADOWNER This patch checks the principal and returns nfserr_inval directly. It could check after decoding in nfs4xdr.c, but it's simpler to do it in nfsd_map_xxxx. Signed-off-by: Kinglong Mee <kinglongmee@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2017-02-17Merge branch 'for-4.11/next' into for-4.11/linus-mergeJens Axboe
Signed-off-by: Jens Axboe <axboe@fb.com>
2017-02-17gfs2: Use rhashtable walk interface in glock_hash_walkHerbert Xu
The function glock_hash_walk walks the rhashtable by hand. This is broken because if it catches the hash table in the middle of a rehash, then it will miss entries. This patch replaces the manual walk by using the rhashtable walk interface. Fixes: 88ffbf3e037e ("GFS2: Use resizable hash table for glocks") Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-17btrfs: use btrfs_debug instead of pr_debug in transaction abortJeff Mahoney
Commit e5d6b12fe14 (Btrfs: don't WARN() in btrfs_transaction_abort() for IO errors) added a pr_debug call to be printed when a transaction is aborted with -EIO instead of WARN. btrfs_debug prints which file system the message is associated with so let's use that instead. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: btrfs_truncate_free_space_cache always allocates pathJeff Mahoney
btrfs_truncate_free_space_cache always allocates a btrfs_path structure but only uses it when the caller passes a block group. Let's move the allocation and free into the conditional. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: free-space-cache, clean up unnecessary root argumentsJeff Mahoney
The free space cache APIs accept a root but always use the tree root. Also, btrfs_truncate_free_space_cache accepts a root AND an inode but the inode always points to the root anyway, so let's just pass the inode. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: convert btrfs_inc_block_group_ro to accept fs_infoJeff Mahoney
btrfs_inc_block_group_ro is either passed the extent root or the dev root, but it doesn't do anything with the dev tree. Let's convert to passing an fs_info and using the extent root. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: flush_space always takes fs_info->fs_rootJeff Mahoney
We don't need to pass a root to flush_space since it always uses the fs_root. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: pass fs_info to (more) routines that are only called with extent_rootJeff Mahoney
Outside of interactions with qgroups, the roots passed in extent-tree.c are usually passed to ensure that we don't do refcounts on log trees or to get the allocation profile for an allocation request. Otherwise, it operates on the extent root. This patch converts some more routines in extent-tree.c that are always called with the extent root to accept an fs_info instead. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: qgroup: Move half of the qgroup accounting time out of commit transQu Wenruo
Just as Filipe pointed out, the most time consuming parts of qgroup are btrfs_qgroup_account_extents() and btrfs_qgroup_prepare_account_extents(). Which both call btrfs_find_all_roots() to get old_roots and new_roots ulist. What makes things worse is, we're calling that expensive btrfs_find_all_roots() at transaction committing time with TRANS_STATE_COMMIT_DOING, which will blocks all incoming transaction. Such behavior is necessary for @new_roots search as current btrfs_find_all_roots() can't do it correctly so we do call it just before switch commit roots. However for @old_roots search, it's not necessary as such search is based on commit_root, so it will always be correct and we can move it out of transaction committing. This patch moves the @old_roots search part out of commit_transaction(), so in theory we can half the time qgroup time consumption at commit_transaction(). But please note that, this won't speedup qgroup overall, the total time consumption is still the same, just reduce the performance stall. Cc: Filipe Manana <fdmanana@suse.com> Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com> Reviewed-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from adjust_slots_upwardsDavid Sterba
Never used. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameters from __btrfs_write_out_cacheDavid Sterba
Both unused after the call to update_cache_item has been moved to __btrfs_wait_cache_io. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from cleanup_write_cache_enospcDavid Sterba
bitmap_list is unused since the io_ctl framework. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from __add_inode_refDavid Sterba
Unused since the helper has been split, eb used in the caller. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from clone_copy_inline_extentDavid Sterba
Never used. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameters from btrfs_cmp_dataDavid Sterba
After the page locking has been reworked, we get all pages prepared via cmp_pages. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from __add_inline_refsDavid Sterba
Never used. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameters from scrub_setup_wr_ctxDavid Sterba
Never used. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from create_snapshotDavid Sterba
The name parameters have never been used, as the name is passed via the dentry. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from init_first_rw_deviceDavid Sterba
The 'device' used to be added in that function, but now it's done by the caller. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from __btrfs_alloc_chunkDavid Sterba
We grab fs_info from other parameters. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from btrfs_fill_superDavid Sterba
Never used for anything meaningful since we have our own superblock filler. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from extent_write_cache_pagesDavid Sterba
The 'tree' was used to call locking hook that does not exist anymore. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from add_pending_csumsDavid Sterba
Never used. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from update_nr_writtenDavid Sterba
The logic has been updated in "Btrfs: make mapping->writeback_index point to the last written page" (a91326679f2a0a4c2) and page is not needed anymore. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from submit_extent_pageDavid Sterba
This used to hold number of maximum pages to allocate, but this is now limited by BIO_MAX_PAGES. The local are now unused and removed as well. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from tree_move_next_or_upnextDavid Sterba
Not needed. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from tree_move_downDavid Sterba
Never needed. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from btrfs_check_super_validDavid Sterba
None of the checks need to know the ro/rw status as they're all not changing the superblock. Moreover, we can access the sb flags directly if we'd need to decide by the ro/rw status. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from btrfs_prepare_extent_commitDavid Sterba
Added but never used. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from btrfs_subvolume_release_metadataDavid Sterba
Unused since qgroup refactoring that split data and metadata accounting, the btrfs_qgroup_free helper. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from __push_leaf_leftDavid Sterba
Unused since long ago. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from __push_leaf_rightDavid Sterba
Unused since long ago. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: merge two superblock writing helpersDavid Sterba
write_all_supers and write_ctree_super are almost equal, the parameter 'trans' is unused so we can drop it and have just one helper. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from write_dev_supersDavid Sterba
The barriers are handled by the caller. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from split_itemDavid Sterba
Never used. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from clean_tree_blockDavid Sterba
Added but never needed. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from check_async_writeDavid Sterba
Added but never used. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unused parameter from read_block_for_searchDavid Sterba
Never used in that function. Reviewed-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: ulist: rename ulist_fini to ulist_releaseDavid Sterba
Change the name so it matches the naming we already use eg. for btrfs_path. Suggested-by: Qu Wenruo <quwenruo@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove pointless rcu protection from btrfs_qgroup_inheritDavid Sterba
There was never need for RCU protection around reading nodesize or other fairly constant filesystem data. Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: qgroups: opencode qgroup_free helperDavid Sterba
The helper name is not too helpful and is just wrapping a simple call. Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: remove unnecessary mutex lock in qgroup_account_snapshotDavid Sterba
The quota status used to be tracked as a variable, so the mutex was needed (until "Btrfs: add a flags field to btrfs_fs_info" afcdd129e05a9). Since the status is a bit modified atomically and we don't hold the mutex beyond the check, we can drop it. Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: check quota status earlier and don't do unnecessary freesDavid Sterba
Status of quotas should be the first check in btrfs_qgroup_account_extent and we can return immediatelly, no need to do no-op ulist frees. Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: embed extent_changeset::range_changed to the structureDavid Sterba
We can embed range_changed to the extent changeset to address following problems: - no need to allocate ulist dynamically, we also get rid of the GFP_NOFS for free - fix lack of allocation failure checking in btrfs_qgroup_reserve_data The stack consuption where extent_changeset is used slightly increases: before: 16 after: 16 - 8 (for pointer) + 32 (sizeof ulist) = 40 Which is bearable. Reviewed-by: Qu Wenruo <quwenruo@cn.fujitsu.com> Signed-off-by: David Sterba <dsterba@suse.com>
2017-02-17btrfs: ulist: make the finalization function publicDavid Sterba
Make ulist_fini externally visible so the ulist API is complete. Signed-off-by: David Sterba <dsterba@suse.com>
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