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xfs: queue inactivation immediately when free realtime extents are tight

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Now that we have made the inactivation of unlinked inodes a background
task to increase the throughput of file deletions, we need to be a
little more careful about how long of a delay we can tolerate.

Similar to the patch doing this for free space on the data device, if
the file being inactivated is a realtime file and the realtime volume is
running low on free extents, we want to run the worker ASAP so that the
realtime allocator can make better decisions.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong 2021-08-06 11:05:41 -07:00
parent 108523b8de
commit 65f03d8652
3 changed files with 31 additions and 6 deletions
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21
fs/xfs/xfs_icache.c
View File

@ -1916,6 +1916,24 @@ xfs_inodegc_start(
xfs_inodegc_queue_all(mp);
}
#ifdef CONFIG_XFS_RT
static inline bool
xfs_inodegc_want_queue_rt_file(
struct xfs_inode *ip)
{
struct xfs_mount *mp = ip->i_mount;
uint64_t freertx;
if (!XFS_IS_REALTIME_INODE(ip))
return false;
freertx = READ_ONCE(mp->m_sb.sb_frextents);
return freertx < mp->m_low_rtexts[XFS_LOWSP_5_PCNT];
}
#else
# define xfs_inodegc_want_queue_rt_file(ip) (false)
#endif /* CONFIG_XFS_RT */
/*
* Schedule the inactivation worker when:
*
@ -1938,6 +1956,9 @@ xfs_inodegc_want_queue_work(
XFS_FDBLOCKS_BATCH) < 0)
return true;
if (xfs_inodegc_want_queue_rt_file(ip))
return true;
if (xfs_inode_near_dquot_enforcement(ip, XFS_DQTYPE_USER))
return true;

13
fs/xfs/xfs_mount.c
View File

@ -365,13 +365,16 @@ void
xfs_set_low_space_thresholds(
struct xfs_mount *mp)
{
int i;
uint64_t dblocks = mp->m_sb.sb_dblocks;
uint64_t rtexts = mp->m_sb.sb_rextents;
int i;
do_div(dblocks, 100);
do_div(rtexts, 100);
for (i = 0; i < XFS_LOWSP_MAX; i++) {
uint64_t space = mp->m_sb.sb_dblocks;
do_div(space, 100);
mp->m_low_space[i] = space * (i + 1);
mp->m_low_space[i] = dblocks * (i + 1);
mp->m_low_rtexts[i] = rtexts * (i + 1);
}
}

3
fs/xfs/xfs_mount.h
View File

@ -147,7 +147,8 @@ typedef struct xfs_mount {
int m_fixedfsid[2]; /* unchanged for life of FS */
uint m_qflags; /* quota status flags */
uint64_t m_flags; /* global mount flags */
int64_t m_low_space[XFS_LOWSP_MAX];
uint64_t m_low_space[XFS_LOWSP_MAX];
uint64_t m_low_rtexts[XFS_LOWSP_MAX];
struct xfs_ino_geometry m_ino_geo; /* inode geometry */
struct xfs_trans_resv m_resv; /* precomputed res values */
/* low free space thresholds */