fddb564f62
This series drives the perag down into the AGI, AGF and AGFL access routines and unifies the perag structure initialisation with the high level AG header read functions. This largely replaces the xfs_mount/agno pair that is passed to all these functions with a perag, and in most places we already have a perag ready to pass in. There are a few places where perags need to be grabbed before reading the AG header buffers - some of these will need to be driven to higher layers to ensure we can run operations on AGs without getting stuck part way through waiting on a perag reference. The latter section of this patchset moves some of the AG geometry information from the xfs_mount to the xfs_perag, and starts converting code that requires geometry validation to use a perag instead of a mount and having to extract the AGNO from the object location. This also allows us to store the AG size in the perag and then we can stop having to compare the agno against sb_agcount to determine if the AG is the last AG and so has a runt size. This greatly simplifies some of the type validity checking we do and substantially reduces the CPU overhead of type validity checking. It also cuts over 1.2kB out of the binary size. Signed-off-by: Dave Chinner <dchinner@redhat.com> -----BEGIN PGP SIGNATURE----- iQJIBAABCgAyFiEEmJOoJ8GffZYWSjj/regpR/R1+h0FAmLHawsUHGRhdmlkQGZy b21vcmJpdC5jb20ACgkQregpR/R1+h09BhAAzsBr2K8yj+2eCwGZO7g4/Cynf/bb nbukVogeMkFuUOmxniQzY6F3NUNo9du0FcDgEfbh6mYJtGRVQZaVCBKyPmcMXPOZ q/1VRTod20XdMdvPfXvXP3FJoSp1W7/dPIx9Mxl4b5zCdFfeUTTfScl12MAePrdW TaJpRBmxP+CZ0/bocAyHL4/2kqY2FNVgbR4vGxxHgqyjfwgQrdmOBetw7xoVxze1 lK3Iogm0btBd1bkGO83x7DceGl41JGEutx+92gI+/43rzP7Q4BRqXZm5Ik5taWVN QLcLgAyj5X91D/e5dmg9NkDvVyzo7QHx0/0O/HOfw5XbzNcVw81se49yUjUS7+VM n2LocVCLYsx9/DxqSJxd9lJUXlLtY/YvY7lewNknmeASwtHH8ReOvMPS89L5PJqD InPDKay7OVsBkJd9I2yG43Q/MzQTuJuVWmbP5yVoFqR/wX9V8bjf8ng9kkkfVqMj 1nXnMyCr/41zSwvM12fEkv67ilwsbke3j5jYrO/TcfjAV8xqb6D6HaEx1PCRQpT2 w1FATNRGDdc2m+ojU4/ETe36KHYO/eivio1oBtqzdoaE13GRJjCqQVErg9nsDSQn 34zEcShHuhKwn5VLsR6ngZVZOOHSkAjAw4G6XsvoUKpjwtVH0Ueu/bja7/ZwOq7W ySka+/95OgHNS64= =71q3 -----END PGP SIGNATURE----- Merge tag 'xfs-perag-conv-5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs into xfs-5.20-mergeA xfs: per-ag conversions for 5.20 This series drives the perag down into the AGI, AGF and AGFL access routines and unifies the perag structure initialisation with the high level AG header read functions. This largely replaces the xfs_mount/agno pair that is passed to all these functions with a perag, and in most places we already have a perag ready to pass in. There are a few places where perags need to be grabbed before reading the AG header buffers - some of these will need to be driven to higher layers to ensure we can run operations on AGs without getting stuck part way through waiting on a perag reference. The latter section of this patchset moves some of the AG geometry information from the xfs_mount to the xfs_perag, and starts converting code that requires geometry validation to use a perag instead of a mount and having to extract the AGNO from the object location. This also allows us to store the AG size in the perag and then we can stop having to compare the agno against sb_agcount to determine if the AG is the last AG and so has a runt size. This greatly simplifies some of the type validity checking we do and substantially reduces the CPU overhead of type validity checking. It also cuts over 1.2kB out of the binary size. Signed-off-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Darrick J. Wong <djwong@kernel.org> * tag 'xfs-perag-conv-5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs: xfs: make is_log_ag() a first class helper xfs: replace xfs_ag_block_count() with perag accesses xfs: Pre-calculate per-AG agino geometry xfs: Pre-calculate per-AG agbno geometry xfs: pass perag to xfs_alloc_read_agfl xfs: pass perag to xfs_alloc_put_freelist xfs: pass perag to xfs_alloc_get_freelist xfs: pass perag to xfs_read_agf xfs: pass perag to xfs_read_agi xfs: pass perag to xfs_alloc_read_agf() xfs: kill xfs_alloc_pagf_init() xfs: pass perag to xfs_ialloc_read_agi() xfs: kill xfs_ialloc_pagi_init() xfs: make last AG grow/shrink perag centric |
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| fs | ||
| include | ||
| init | ||
| ipc | ||
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| lib | ||
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| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
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| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
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| README | ||
README
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.