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4bf7832234
In f2fs_update_inode, i_size of the atomic file isn't updated until
FI_ATOMIC_COMMITTED flag is set. When committing atomic write right
after the writeback of the inode, i_size of the raw inode will not be
updated. It can cause the atomicity corruption due to a mismatch between
old file size and new data.
To prevent the problem, let's mark inode dirty for FI_ATOMIC_COMMITTED
Atomic write thread Writeback thread
__writeback_single_inode
write_inode
f2fs_update_inode
- skip i_size update
f2fs_ioc_commit_atomic_write
f2fs_commit_atomic_write
set_inode_flag(inode, FI_ATOMIC_COMMITTED)
f2fs_do_sync_file
f2fs_fsync_node_pages
- skip f2fs_update_inode since the inode is clean
Fixes:
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| arch | ||
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| 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.