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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/os/linux/zfs/zpl_file_range.c
+3 -2
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@@ -103,7 +103,8 @@ zpl_copy_file_range(struct file *src_file, loff_t src_off,
* Since Linux 5.3 the filesystem driver is responsible for executing
* an appropriate fallback, and a generic fallback function is provided.
*/
if (ret == -EOPNOTSUPP || ret == -EINVAL || ret == -EXDEV)
if (ret == -EOPNOTSUPP || ret == -EINVAL || ret == -EXDEV ||
ret == -EAGAIN)
ret = generic_copy_file_range(src_file, src_off, dst_file,
dst_off, len, flags);
#else
@@ -111,7 +112,7 @@ zpl_copy_file_range(struct file *src_file, loff_t src_off,
* Before Linux 5.3 the filesystem has to return -EOPNOTSUPP to signal
* to the kernel that it should fallback to a content copy.
*/
if (ret == -EINVAL || ret == -EXDEV)
if (ret == -EINVAL || ret == -EXDEV || ret == -EAGAIN)
ret = -EOPNOTSUPP;
#endif /* HAVE_VFS_GENERIC_COPY_FILE_RANGE */