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Differential D20808

factor out the code that actually does the truncation from vn_truncate() into vn_truncate_locked()
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Authored by rmacklem on Jun 30 2019, 12:26 AM.
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F103595633: D20808.id59288.diff
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rS349582: Factor out the code that does a VOP_SETATTR(size) from vn_truncate().
Summary

This patch factors out the code that actually does the truncation from vn_truncate() into vn_truncate_locked().
This will allow vn_truncate_locked() to be called within the NFS server and by D20584 for the copy_file_range(2) syscall,
instead of needing to carry across any changes (such as the recent r347151) made to vn_truncate() over to the NFS
server code (and copy_file_range(2) when added to head.

There should be no semantic change to vn_truncate().

Test Plan

Tested using a program that calls the truncate(2) syscall and a program I use to test copy_file_range(2) for a
sparse file.

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Repository
rS FreeBSD src repository - subversion
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head/
sys/
kern/
30 lines
sys/
2 lines

Diff 59288

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head/sys/kern/vfs_vnops.c

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head/sys/sys/vnode.h

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