Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
io_uring/tctx: avoid modifying loop variable in io_ring_add_registered_file
Use a separate 'idx' variable to store the result of array_index_nospec()
instead of modifying the loop variable 'offset' directly. This improves
code clarity by separating the logical index from the sanitized index
used for array access.
No functional change intended.
Signed-off-by: Yang Xiuwei <yangxiuwei@kylinos.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
authored by
Yang Xiuwei
and committed by
Jens Axboe
daa0b901
7cb3a683
+5
-5
+5
-5
io_uring/tctx.c
+5
-5
io_uring/tctx.c
···
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int io_ring_add_registered_file(struct io_uring_task *tctx, struct file *file,
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int start, int end)
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{
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-
int offset;
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+
int offset, idx;
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for (offset = start; offset < end; offset++) {
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-
offset = array_index_nospec(offset, IO_RINGFD_REG_MAX);
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if (tctx->registered_rings[offset])
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idx = array_index_nospec(offset, IO_RINGFD_REG_MAX);
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if (tctx->registered_rings[idx])
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continue;
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-
tctx->registered_rings[offset] = file;
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return offset;
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tctx->registered_rings[idx] = file;
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return idx;
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}
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return -EBUSY;
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}