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copy_file_range: fix fallback when source create on same txg

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In 019dea0a5 we removed the conversion from EAGAIN->EXDEV inside
zfs_clone_range(), but forgot to add a test for EAGAIN to the
copy_file_range() entry points to trigger fallback to a content copy.

This commit fixes that.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Kay Pedersen <mail@mkwg.de>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #15170
Closes #15172
This commit is contained in:
Rob N
2023-08-15 10:34:14 +10:00
committed by Brian Behlendorf
parent 645a7e4d95
commit 92f095a903
7 changed files with 81 additions and 8 deletions
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module/zfs/zfs_vnops.c
+4 -3
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@@ -1246,9 +1246,10 @@ zfs_clone_range(znode_t *inzp, uint64_t *inoffp, znode_t *outzp,
&nbps);
if (error != 0) {
/*
* If we are tyring to clone a block that was created
* in the current transaction group. Return an error,
* so the caller can fallback to just copying the data.
* If we are trying to clone a block that was created
* in the current transaction group, error will be
* EAGAIN here, which we can just return to the caller
* so it can fallback if it likes.
*/
break;
}