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linux: implement filesystem-side copy/clone functions

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This implements the Linux VFS ops required to service the file
copy/clone APIs:

  .copy_file_range    (4.5+)
  .clone_file_range   (4.5-4.19)
  .dedupe_file_range  (4.5-4.19)
  .remap_file_range   (4.20+)

Note that dedupe_file_range() and remap_file_range(REMAP_FILE_DEDUP) are
hooked up here, but are not implemented yet.

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
2023-06-27 23:44:53 +10:00
committed by Brian Behlendorf
parent f6facd2429
commit 5a35c68b67
6 changed files with 384 additions and 1 deletions
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module/os/linux/zfs/zpl_file.c
+12 -1
View File
@@ -1283,7 +1283,6 @@ zpl_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
}
#endif /* CONFIG_COMPAT */
const struct address_space_operations zpl_address_space_operations = {
#ifdef HAVE_VFS_READPAGES
.readpages = zpl_readpages,
@@ -1333,6 +1332,18 @@ const struct file_operations zpl_file_operations = {
.aio_fsync = zpl_aio_fsync,
#endif
.fallocate = zpl_fallocate,
#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_DEDUPE_FILE_RANGE
.dedupe_file_range = zpl_dedupe_file_range,
#endif
#ifdef HAVE_FILE_FADVISE
.fadvise = zpl_fadvise,
#endif