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Add support for FALLOC_FL_ZERO_RANGE

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For us, I think it's always just FALLOC_FL_PUNCH_HOLE with a fake
mustache on.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Coleman Kane <ckane@colemankane.org>
Signed-off-by: Rich Ercolani <rincebrain@gmail.com>
Closes #12975
This commit is contained in:
Rich Ercolani
2022-01-19 00:12:15 -05:00
committed by Tony Hutter
parent 70b7b1975d
commit 8ef01afbfc
2 changed files with 24 additions and 2 deletions
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module/os/linux/zfs/zpl_file.c
+7 -2
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@@ -745,7 +745,12 @@ zpl_fallocate_common(struct inode *ip, int mode, loff_t offset, loff_t len)
fstrans_cookie_t cookie;
int error = 0;
if ((mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) != 0)
int test_mode = FALLOC_FL_PUNCH_HOLE;
#ifdef HAVE_FALLOC_FL_ZERO_RANGE
test_mode |= FALLOC_FL_ZERO_RANGE;
#endif
if ((mode & ~(FALLOC_FL_KEEP_SIZE | test_mode)) != 0)
return (-EOPNOTSUPP);
if (offset < 0 || len <= 0)
@@ -756,7 +761,7 @@ zpl_fallocate_common(struct inode *ip, int mode, loff_t offset, loff_t len)
crhold(cr);
cookie = spl_fstrans_mark();
if (mode & FALLOC_FL_PUNCH_HOLE) {
if (mode & (test_mode)) {
flock64_t bf;
if (offset > olen)