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Fix size of symlinks and enable kernel symlink cache #2285

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Fix size of symlinks and enable kernel symlink cache #2285

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Commits on Aug 5, 2024

  1. Fix size of symlinks 

    Symlink inodes are expected to have size equal to the length of its
target. This is defined in POSIX spec.

FUSE's symlink cache also expects this, so fixing this prepares the
enabling of the symlink cache.

Signed-off-by: Gary Guo <gary.guo@lowrisc.org>
    @nbdd0121
    nbdd0121 committed Aug 5, 2024
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  2. Enable kernel symlink caching 

    This would provide significant savings when symlink'ed path is
frequently accessed.

Since symlink target is not mutable, this is always safe regardless TTL
settings. (When the symlink is removed and re-created, its generatiton
would change so a different inode is created).

Signed-off-by: Gary Guo <gary.guo@lowrisc.org>
    @nbdd0121
    nbdd0121 committed Aug 5, 2024
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