diff options
Diffstat (limited to 'fs/xfs/xfs_log_cil.c')
| -rw-r--r-- | fs/xfs/xfs_log_cil.c | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/fs/xfs/xfs_log_cil.c b/fs/xfs/xfs_log_cil.c index 67a99d94701e..73f5b7f628f4 100644 --- a/fs/xfs/xfs_log_cil.c +++ b/fs/xfs/xfs_log_cil.c @@ -100,7 +100,7 @@ xlog_cil_ctx_alloc(void) { struct xfs_cil_ctx *ctx; - ctx = kmem_zalloc(sizeof(*ctx), KM_NOFS); + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL | __GFP_NOFAIL); INIT_LIST_HEAD(&ctx->committing); INIT_LIST_HEAD(&ctx->busy_extents.extent_list); INIT_LIST_HEAD(&ctx->log_items); @@ -339,7 +339,7 @@ xlog_cil_alloc_shadow_bufs( * the buffer, only the log vector header and the iovec * storage. */ - kmem_free(lip->li_lv_shadow); + kvfree(lip->li_lv_shadow); lv = xlog_kvmalloc(buf_size); memset(lv, 0, xlog_cil_iovec_space(niovecs)); @@ -703,7 +703,7 @@ xlog_cil_free_logvec( while (!list_empty(lv_chain)) { lv = list_first_entry(lv_chain, struct xfs_log_vec, lv_list); list_del_init(&lv->lv_list); - kmem_free(lv); + kvfree(lv); } } @@ -753,7 +753,7 @@ xlog_cil_committed( return; } - kmem_free(ctx); + kfree(ctx); } void @@ -1116,11 +1116,18 @@ xlog_cil_cleanup_whiteouts( * same sequence twice. If we get a race between multiple pushes for the same * sequence they will block on the first one and then abort, hence avoiding * needless pushes. + * + * This runs from a workqueue so it does not inherent any specific memory + * allocation context. However, we do not want to block on memory reclaim + * recursing back into the filesystem because this push may have been triggered + * by memory reclaim itself. Hence we really need to run under full GFP_NOFS + * contraints here. */ static void xlog_cil_push_work( struct work_struct *work) { + unsigned int nofs_flags = memalloc_nofs_save(); struct xfs_cil_ctx *ctx = container_of(work, struct xfs_cil_ctx, push_work); struct xfs_cil *cil = ctx->cil; @@ -1334,12 +1341,14 @@ xlog_cil_push_work( spin_unlock(&log->l_icloglock); xlog_cil_cleanup_whiteouts(&whiteouts); xfs_log_ticket_ungrant(log, ticket); + memalloc_nofs_restore(nofs_flags); return; out_skip: up_write(&cil->xc_ctx_lock); xfs_log_ticket_put(new_ctx->ticket); - kmem_free(new_ctx); + kfree(new_ctx); + memalloc_nofs_restore(nofs_flags); return; out_abort_free_ticket: @@ -1348,6 +1357,7 @@ out_abort_free_ticket: if (!ctx->commit_iclog) { xfs_log_ticket_ungrant(log, ctx->ticket); xlog_cil_committed(ctx); + memalloc_nofs_restore(nofs_flags); return; } spin_lock(&log->l_icloglock); @@ -1356,6 +1366,7 @@ out_abort_free_ticket: /* Not safe to reference ctx now! */ spin_unlock(&log->l_icloglock); xfs_log_ticket_ungrant(log, ticket); + memalloc_nofs_restore(nofs_flags); } /* @@ -1533,7 +1544,7 @@ xlog_cil_process_intents( set_bit(XFS_LI_WHITEOUT, &ilip->li_flags); trace_xfs_cil_whiteout_mark(ilip); len += ilip->li_lv->lv_bytes; - kmem_free(ilip->li_lv); + kvfree(ilip->li_lv); ilip->li_lv = NULL; xfs_trans_del_item(lip); @@ -1747,7 +1758,7 @@ xlog_cil_init( struct xlog_cil_pcp *cilpcp; int cpu; - cil = kmem_zalloc(sizeof(*cil), KM_MAYFAIL); + cil = kzalloc(sizeof(*cil), GFP_KERNEL | __GFP_RETRY_MAYFAIL); if (!cil) return -ENOMEM; /* @@ -1786,7 +1797,7 @@ xlog_cil_init( out_destroy_wq: destroy_workqueue(cil->xc_push_wq); out_destroy_cil: - kmem_free(cil); + kfree(cil); return -ENOMEM; } @@ -1799,12 +1810,12 @@ xlog_cil_destroy( if (cil->xc_ctx) { if (cil->xc_ctx->ticket) xfs_log_ticket_put(cil->xc_ctx->ticket); - kmem_free(cil->xc_ctx); + kfree(cil->xc_ctx); } ASSERT(test_bit(XLOG_CIL_EMPTY, &cil->xc_flags)); free_percpu(cil->xc_pcp); destroy_workqueue(cil->xc_push_wq); - kmem_free(cil); + kfree(cil); } |