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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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module/os/linux/zfs/zpl_file.c
+13 -3
View File
@@ -1311,7 +1311,12 @@ const struct address_space_operations zpl_address_space_operations = {
#endif
};
#ifdef HAVE_VFS_FILE_OPERATIONS_EXTEND
const struct file_operations_extend zpl_file_operations = {
.kabi_fops = {
#else
const struct file_operations zpl_file_operations = {
#endif
.open = zpl_open,
.release = zpl_release,
.llseek = zpl_llseek,
@@ -1341,12 +1346,12 @@ const struct file_operations zpl_file_operations = {
#ifdef HAVE_VFS_COPY_FILE_RANGE
.copy_file_range = zpl_copy_file_range,
#endif
#ifdef HAVE_VFS_REMAP_FILE_RANGE
.remap_file_range = zpl_remap_file_range,
#endif
#ifdef HAVE_VFS_CLONE_FILE_RANGE
.clone_file_range = zpl_clone_file_range,
#endif
#ifdef HAVE_VFS_REMAP_FILE_RANGE
.remap_file_range = zpl_remap_file_range,
#endif
#ifdef HAVE_VFS_DEDUPE_FILE_RANGE
.dedupe_file_range = zpl_dedupe_file_range,
#endif
@@ -1357,6 +1362,11 @@ const struct file_operations zpl_file_operations = {
#ifdef CONFIG_COMPAT
.compat_ioctl = zpl_compat_ioctl,
#endif
#ifdef HAVE_VFS_FILE_OPERATIONS_EXTEND
}, /* kabi_fops */
.copy_file_range = zpl_copy_file_range,
.clone_file_range = zpl_clone_file_range,
#endif
};
const struct file_operations zpl_dir_file_operations = {