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linux: implement filesystem-side copy/clone functions for EL7

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Redhat have backported copy_file_range and clone_file_range to the EL7
kernel using an "extended file operations" wrapper structure. This
connects all that up to let cloning work there too.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Kay Pedersen <mail@mkwg.de>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Sponsored-By: OpenDrives Inc.
Sponsored-By: Klara Inc.
Closes #15050
This commit is contained in:
Rob Norris
2023-06-25 20:50:19 +10:00
committed by Brian Behlendorf
parent 9927f219f1
commit 6b0a4be5fe
7 changed files with 90 additions and 8 deletions
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include/os/linux/zfs/sys/zpl.h
+4
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@@ -52,7 +52,11 @@ extern const struct inode_operations zpl_special_inode_operations;
/* zpl_file.c */
extern const struct address_space_operations zpl_address_space_operations;
#ifdef HAVE_VFS_FILE_OPERATIONS_EXTEND
extern const struct file_operations_extend zpl_file_operations;
#else
extern const struct file_operations zpl_file_operations;
#endif
extern const struct file_operations zpl_dir_file_operations;
/* zpl_super.c */