mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-15 15:15:47 +00:00
Code Issues Releases Wiki Activity

bcachefs: Add an option to disable reflink support

Browse source 
Reflink might be buggy, so we're adding an option so users can help
bisect what's going on.

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2020-06-02 16:30:54 -04:00 committed by Kent Overstreet
parent 039fc4c522
commit 36b8372b59
4 changed files with 13 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
fs/bcachefs/bcachefs_format.h
View file

@ -1266,6 +1266,8 @@ LE64_BITMASK(BCH_SB_PRJQUOTA, struct bch_sb, flags[0], 59, 60);
LE64_BITMASK(BCH_SB_HAS_ERRORS, struct bch_sb, flags[0], 60, 61);
LE64_BITMASK(BCH_SB_REFLINK, struct bch_sb, flags[0], 61, 62);
/* 61-64 unused */
LE64_BITMASK(BCH_SB_STR_HASH_TYPE, struct bch_sb, flags[1], 0, 4);

3
fs/bcachefs/fs-io.c
View file

@ -2812,6 +2812,9 @@ loff_t bch2_remap_file_range(struct file *file_src, loff_t pos_src,
u64 aligned_len;
loff_t ret = 0;
if (!c->opts.reflink)
return -EOPNOTSUPP;
if (remap_flags & ~(REMAP_FILE_DEDUP|REMAP_FILE_ADVISORY))
return -EINVAL;

5
fs/bcachefs/opts.h
View file

@ -207,6 +207,11 @@ enum opt_type {
OPT_BOOL(), \
BCH_SB_PRJQUOTA, false, \
NULL, "Enable project quotas") \
x(reflink, u8, \
OPT_FORMAT|OPT_MOUNT|OPT_RUNTIME, \
OPT_BOOL(), \
BCH_SB_REFLINK, true, \
NULL, "Enable reflink support") \
x(degraded, u8, \
OPT_MOUNT, \
OPT_BOOL(), \

3
fs/bcachefs/reflink.c
View file

@ -167,6 +167,9 @@ s64 bch2_remap_range(struct bch_fs *c,
u64 src_done, dst_done;
int ret = 0, ret2 = 0;
if (!c->opts.reflink)
return -EOPNOTSUPP;
if (!percpu_ref_tryget(&c->writes))
return -EROFS;