diff options
Diffstat (limited to 'fs/gfs2/quota.c')
| -rw-r--r-- | fs/gfs2/quota.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c index 8fe7a0a87c80..fd1ec5243d2e 100644 --- a/fs/gfs2/quota.c +++ b/fs/gfs2/quota.c @@ -289,6 +289,26 @@ static void slot_hold(struct gfs2_quota_data *qd) spin_unlock(&qd_lru_lock); } +static void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap, + unsigned int bit, int new_value) +{ + unsigned int c, o, b = bit; + int old_value; + + c = b / (8 * PAGE_SIZE); + b %= 8 * PAGE_SIZE; + o = b / 8; + b %= 8; + + old_value = (bitmap[c][o] & (1 << b)); + gfs2_assert_withdraw(sdp, !old_value != !new_value); + + if (new_value) + bitmap[c][o] |= 1 << b; + else + bitmap[c][o] &= ~(1 << b); +} + static void slot_put(struct gfs2_quota_data *qd) { struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd; |