diff options
| author | Dan Robertson <dan@dlrobertson.com> | 2021-05-18 20:36:20 -0400 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2022-10-03 22:51:23 -0400 |
| commit | 15ba36cf0832fa4462044e00cb0e6e25e54e06af (patch) | |
| tree | 86bfb0422abafab84577febd887452fde8efd44c | |
| parent | c73453bd6b7338ba460ed193fc690d95aa5470a7 (diff) | |
bcachefs: statfs resports incorrect avail blocks
The current implementation of bch_statfs does not scale the number of
available blocks provided in f_bavail by the reserve factor. This causes
an allocation of a file of this size to fail.
Signed-off-by: Dan Robertson <dan@dlrobertson.com>
| -rw-r--r-- | fs/bcachefs/buckets.c | 7 | ||||
| -rw-r--r-- | fs/bcachefs/buckets.h | 7 | ||||
| -rw-r--r-- | fs/bcachefs/fs.c | 4 |
3 files changed, 9 insertions, 9 deletions
diff --git a/fs/bcachefs/buckets.c b/fs/bcachefs/buckets.c index d967e5a449af..96e07d3c0cc6 100644 --- a/fs/bcachefs/buckets.c +++ b/fs/bcachefs/buckets.c @@ -257,18 +257,11 @@ void bch2_fs_usage_to_text(struct printbuf *out, } } -#define RESERVE_FACTOR 6 - static u64 reserve_factor(u64 r) { return r + (round_up(r, (1 << RESERVE_FACTOR)) >> RESERVE_FACTOR); } -static u64 avail_factor(u64 r) -{ - return div_u64(r << RESERVE_FACTOR, (1 << RESERVE_FACTOR) + 1); -} - u64 bch2_fs_sectors_used(struct bch_fs *c, struct bch_fs_usage_online *fs_usage) { return min(fs_usage->u.hidden + diff --git a/fs/bcachefs/buckets.h b/fs/bcachefs/buckets.h index 7463e6420b14..04a2a9310cdd 100644 --- a/fs/bcachefs/buckets.h +++ b/fs/bcachefs/buckets.h @@ -294,6 +294,13 @@ static inline int bch2_disk_reservation_get(struct bch_fs *c, return bch2_disk_reservation_add(c, res, sectors * nr_replicas, flags); } +#define RESERVE_FACTOR 6 + +static inline u64 avail_factor(u64 r) +{ + return div_u64(r << RESERVE_FACTOR, (1 << RESERVE_FACTOR) + 1); +} + int bch2_dev_buckets_resize(struct bch_fs *, struct bch_dev *, u64); void bch2_dev_buckets_free(struct bch_dev *); int bch2_dev_buckets_alloc(struct bch_fs *, struct bch_dev *); diff --git a/fs/bcachefs/fs.c b/fs/bcachefs/fs.c index d5c7c9e0f6e0..8c026129b425 100644 --- a/fs/bcachefs/fs.c +++ b/fs/bcachefs/fs.c @@ -1273,8 +1273,8 @@ static int bch2_statfs(struct dentry *dentry, struct kstatfs *buf) buf->f_type = BCACHEFS_STATFS_MAGIC; buf->f_bsize = sb->s_blocksize; buf->f_blocks = usage.capacity >> shift; - buf->f_bfree = (usage.capacity - usage.used) >> shift; - buf->f_bavail = buf->f_bfree; + buf->f_bfree = usage.free >> shift; + buf->f_bavail = avail_factor(usage.free) >> shift; buf->f_files = usage.nr_inodes + avail_inodes; buf->f_ffree = avail_inodes; |