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authorKees Cook <kees+treewide@kernel.org>2026-09-02 15:31:14 -0700
committerKees Cook <kees@kernel.org>2026-09-04 21:37:00 -0700
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treec65086f9bdcd48c6360fb7cb4598bca084da1f32 /Documentation/filesystems/index.rst
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treewide: refresh kmalloc_obj() conversionsgrafted
This is another run of the Coccinelle script for converting kmalloc() family of allocations to kmalloc_obj() via the existing rules in scripts/coccinelle/api/kmalloc_objs.cocci This catches both the set of kmalloc() uses added since the first kmalloc_obj() conversions in v7.0 and adds a large group missed in the first pass due to Coccinelle not interacting well with the cleanup.h scoped_...() family of macros[1]. I worked around this with spatch's "--macro-file" argument to a file with all the scoped_...() macros mapped to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control flow indicator I could find. Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc, riscv, and s390 with no new warnings. Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1] Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2] Signed-off-by: Kees Cook <kees+treewide@kernel.org>
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+.. _filesystems_index:
+
+===============================
+Filesystems in the Linux kernel
+===============================
+
+This under-development manual will, some glorious day, provide
+comprehensive information on how the Linux virtual filesystem (VFS) layer
+works, along with the filesystems that sit below it. For now, what we have
+can be found below.
+
+Core VFS documentation
+======================
+
+See these manuals for documentation about the VFS layer itself and how its
+algorithms work.
+
+.. toctree::
+ :maxdepth: 2
+
+ vfs
+ path-lookup
+ api-summary
+ splice
+ locking
+ directory-locking
+ devpts
+ dnotify
+ fiemap
+ files
+ locks
+ mmap_prepare
+ multigrain-ts
+ mount_api
+ quota
+ seq_file
+ sharedsubtree
+ idmappings
+ iomap/index
+
+ automount-support
+
+ caching/index
+
+ porting
+ adding-new-filesystems
+
+Filesystem support layers
+=========================
+
+Documentation for the support code within the filesystem layer for use in
+filesystem implementations.
+
+.. toctree::
+ :maxdepth: 2
+
+ buffer
+ journalling
+ fscrypt
+ fsverity
+ netfs_library
+
+Filesystems
+===========
+
+Documentation for filesystem implementations.
+
+.. toctree::
+ :maxdepth: 2
+
+ 9p
+ adfs
+ affs
+ afs
+ autofs
+ autofs-mount-control
+ befs
+ bfs
+ btrfs
+ ceph
+ coda
+ configfs
+ cramfs
+ dax
+ debugfs
+ dlmfs
+ ecryptfs
+ efivarfs
+ erofs
+ ext2
+ ext3
+ ext4/index
+ f2fs
+ failfs
+ gfs2/index
+ hfs
+ hfsplus
+ hpfs
+ fuse/index
+ inotify
+ isofs
+ nilfs2
+ nfs/index
+ ntfs
+ ntfs3
+ ocfs2
+ ocfs2-online-filecheck
+ omfs
+ orangefs
+ overlayfs
+ proc
+ qnx6
+ ramfs-rootfs-initramfs
+ relay
+ resctrl
+ romfs
+ smb/index
+ spufs/index
+ squashfs
+ sysfs
+ tmpfs
+ ubifs
+ ubifs-authentication
+ udf
+ virtiofs
+ vfat
+ xfs/index
+ zonefs